CI/Sfb Fifth Issue May 2007 (27.9) Rn7 M2 ● High performance rigid urethane insulation – thermal conductivity 0.023–0.028 W/m . K ● Insulation and drainage in one system ● Solves water ponding ● Compatible with all weatherproofing systems ● Provides a practical alternative to screeding, structural falls or firrings ● No load bearing implications for the existing structure ● Resistant to the passage of water vapour ● Easy to handle and install ● Ideal for new build and refurbishment ● Non–deleterious material ● CFC/HCFC–free with zero Ozone Depletion Potential (ODP) TAPERED INSULATION TO ENHANCE WATER DRAINAGE FROM FLAT ROOFS Systems LPS 1181: 2003 Part 1 Certificate No. 388 Class 1 Roof Construction Insulation BBA BRITISH BOARD OF AGRÉMENT CERTIFICATE 97/3364 BBA BRITISH BOARD OF AGRÉMENT CERTIFICATE 06/4372
Transcript
CI/Sfb
Fifth Issue May 2007
(27.9) Rn7 M2
● High performance rigid urethaneinsulation – thermal conductivity0.023–0.028 W/m.K
● Insulation and drainage in one system
● Solves water ponding
● Compatible with allweatherproofing systems
● Provides a practical alternativeto screeding, structural falls orfirrings
● No load bearing implications forthe existing structure
● Resistant to the passage of water vapour
● Easy to handle and install
● Ideal for new build andrefurbishment
● Non–deleterious material
● CFC/HCFC–free with zero OzoneDepletion Potential (ODP)
TAPERED INSULATION TO ENHANCE WATER DRAINAGE FROM FLAT ROOFS
Systems
LPS 1181: 2003 Part 1Certificate No. 388
Class 1 RoofConstruction
I nsu la t ion
BBABRITISHBOARD OFAGRÉMENT
CERTIFICATE 97/3364
BBABRITISHBOARD OFAGRÉMENT
CERTIFICATE 06/4372
Page
Introduction 3
Prestige Projects 4
From Concept to Completion in 3 simple steps 8
Kingspan Thermataper® TT40 Systems 10Tapered insulation for use under partially bonded built–up felt waterproofing
Kingspan Thermataper® TT42 Systems 14Tapered insulation for use under fully bonded built–up felt and mastic asphalt waterproofing
Kingspan Thermataper® TT46 LPC/FM Systems 18Tapered insulation for use under single layer mechanically fixed waterproofing
Kingspan Thermataper® TT47 LPC/FM Systems 22
Tapered insulation for use under fully adhered single–ply waterproofing
Kingspan Thermacricket™ Systems 26Drainage of localised roof areas
Contents
Introduction
3
Insulation & DrainageThere are many critical factors which must be taken intoconsideration when designing a flat roof construction. Two ofthese factors – insulation and rainwater run–off can beaddressed with one product range: Kingspan Thermataper®
Systems from Kingspan Insulation Limited.
Kingspan Thermataper® Systems are available in a range offacings which means they can be used under mostwaterproofing systems.
A Solution to Water PondingA high proportion of flat roof failures can be traced to theinability of the roof to shed rainwater from the surface, leadingto the formation of water ponds. Ponding of rainwater canseriously decrease the design life of the roof by subjecting themembrane to attack from many sources such as:
● thermal stress;
● alkaline formation; and
● mould growth.
Excessive ponding can also increase roof loading, causingfurther deflection of the deck, which only adds to the problemof drainage. Patching is not a practical option: the onlyeffective solution is to eliminate the ponding by designing anadequate fall into the roof.
Kingspan Thermataper® Systems have been developed tosolve these problems Kingspan Thermataper® Systemsencompass a range of tapered insulation boards, which canbe designed to provide adequate roof falls.
The Benefits of Kingspan Thermataper®
SystemsNew Flat RoofsOn new roofs, the use of Kingspan Thermataper® Systemseliminates the need to incorporate a fall into the design of the structure, which can require complex structural supports(e.g. Timber firrings).
Using Kingspan Thermataper® Systems to achieve therequirements of the new Building Regulations / Standardscould yield significant savings over the cost of using alternativemethods to create a fall in a flat roof for drainage purposes.
Kingspan Thermataper® Systems are also a simpler alternativeto screeding as they do not present the risk of an overloadedstructure due to excessive screed depths, avoids a wet tradeand avoids the need for the drying out of screeds.
Kingspan Thermataper® Systems are estimated to be as littleas 1% of the weight of a solution using screed to falls with aflat insulation board.
Because Kingspan Thermataper® Systems do not need time to dry out, they save time in the scheduling of a constructionproject. A recent analysis of screed to falls systems showsthat, in the examples analysed, they may require between 100and 200 days to dry.
Refurbishment of Existing Flat RoofsOn existing roofs, a Kingspan Thermataper® Systems and anew waterproofing membrane can be laid on top of the originalwaterproofing. This eliminates the need for stripping down the roof to deck level, and the provision of a vapour check isnot required.
The existing insulation / substrate and waterproofing must besound to provide a satisfactory surface for the KingspanThermataper® System. In all cases, the risk of interstitialcondensation must be fully assessed, for advice contact theKingspan Insulation Tapered Roofing Department (see rear cover).
No water ponding Reduced heat loss
Project: Djanogly City AcademyLocation: NottinghamUse: EducationArchitect: Foster and PartnershipMain Contractor: SOL constructionProduct: Kingspan Thermataper® TT47 LPC/FM
Project: St. Mary’s Garden Hall Location: WimbledonArchitects: Terry Pawson ArchitectsRoofing Contractor: Robseal RoofingProduct: Kingspan Thermataper® TT47 LPC/FM
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Prestige Projects
Project: Dunsaughlin Civic CentreClient: Meath County CouncilSpecifier: Grafton ArchitectsContractor: John Sisk and Son LtdProduct: Kingspan Thermataper® TT46 LPC/FM
From Concept to Completion in 3 Simple StepsKingspan Thermataper® Systems come with a first classdesign package, which is available from initial concept designthrough to the completion of the project.
This ensures that the most cost–effective solution for any problem is identified and that the end result is a roof,which meets your specification for rainwater run–off andinsulation requirements.
Roof SurveyThe design of a successful Kingspan Thermataper® Systemmust take several factors into account:
● the position of the roof outlets;
● the extent of water run–off required;
● the dimensions of the roof;
● the presence of any existing falls or steps on the roof; and
● the location and dimensions of permanent projections suchas roof lights, vents etc., and perimeter restrictions.
Normally, an architect’s drawing should suffice for new roofs.Any additional information required would be requested by the Kingspan Insulation Tapered Roofing Department (see rearcover) before design commences.
On existing roofs, a free survey of the roof will be carried outby one of our experienced surveyors to collect the requiredinformation.
Design ConsiderationsUtilising Kingspan Insulation’s CAD system, even the mostcomplex tapered system can be designed quickly andeffectively, ready for client approval. The design will illustratethe required direction of drainage and will also take intoaccount U–value, condensation risk analysis and wind upliftrequirements, as well as minimum / maximum rise restrictions.Amendments or revisions can be easily incorporated.
Heat Loss / Condensation RiskIncluded in the design service is the calculation of condensationrisk in accordance with BS 5250: 2002 (Code of practice forcontrol of condensation in buildings).
It is possible to design for minimum or average U–valuesdependent on the client’s requirements. However, thecompleted scheme ensures that any dew point is predictedabove the vapour control layer at the minimum boardthickness, whilst also ensuring any condensation risk is within the safe limits of tolerance of the insulation and theguidelines of BS 5250: 2002.
The Tapered Roofing Drawing ServiceThe Kingspan Insulation Tapered Roofing Department offers adrawing service that allows existing plans to have the Kingspan Thermataper® System incorporated quickly andeffectively. Designs can be supplied in the following ways:
*Supplying plans electronically allows them to be customised by carrying the individualcompany logo.
Systems
CompletionOnce the final design has been accepted by the client and theKingspan Thermataper® System is ordered, a working drawingwill be produced. This drawing will clearly set out the fall anddirection of pitch and fixing of each board type. Installation ofKingspan Thermataper® Systems is simple using these easy tofollow drawings and, to facilitate laying, each board type ispacked separately in labelled shrink wrapped packs.
The boards are lightweight but strong, and are easy to handleand cut on site using a fine toothed saw. For any additionalassistance at fixing stage please contact the Kingspan InsulationTapered Roofing Department (see rear cover).
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Typical Tapered Roofing Design
14.4 m
15.62 m
New hopper & RWP
Newhopper & RWP
Newhopper & RWP
6
6
5
5 4 3 2 1 1 2 2 1 1 2 31
2
3
1
2
3
4
4
3
2
112 1 2 3 54
5
3 2 1 1 2 3 4 4 2 1 2131
2
3
4
1
2
3
4
5
4
5
66 5
5
4
3
2
12 1 1 2 3 4
34
11.2
m
Components 1:60
TAPERED BOARDS
TYPE A TYPE B TYPE C TYPE D1200 x 1200 mm 1200 x 1200 mm 1200 x 1200 mm 1200 x 1200 mm
FLAT BOARDS
80 mm flat board1200 x 600 mm
25 mm 45 mm 45 mm 65 mm 65 mm 85 mm 85 mm 105 mm 80 mm
Kingspan Thermataper® TT40 roof insulation for use under mosttypes of part bonded systems
Section 1:60
1
Type B Type C Type D Type A80 mm flat
Type B80 mm flat
Type C80 mm flat
23
4 5 6165 mm
145 mm125 mm105 mm85 mm65 mm45 mm
0 m 1.2 m 2.4 m 3.6 m 4.8 m 6 m 7.2 m
Wind LoadingThe requirement for mechanical fixing is also determined inaccordance with the requirements of BS 6399–2: 1997(Loading for buildings. Code of practice for wind loads) takinginto account:–
● length / width / height of the building;
● orientation of the building;
● wind speed;
● aspect (i.e. on a hill side); and
● topographical value of the surrounding area.
Spanning on Metal DecksThe designer’s attention is drawn to the requirement thatinsulation boards comply with the minimum thicknesses shown in the table below, when used over metal decks withtrough openings as shown:
But there is far more to sustainability than whether or not aproduct, process or company affects the environment in apositive or a negative way. A company can, and should,demonstrate its financial viability and social responsibility, aswell as ensure that its materials and methods do not addunduly to the burden placed on the planet.
Kingspan Insulation has now put the manufacture of itsproducts at its Pembridge facility in Herefordshire through arigorous independent appraisal of its economic, social,environmental and natural resource impacts using Arup’sSPeAR® tool.
The results show a well balanced performance in terms ofsustainability, and that Kingspan Insulation is already meetinglegislation or best practice in most areas, even moving beyondbest practice in some. Kingspan Insulation is the first and onlyconstruction material manufacturer to have taken this boldmove and openly publish the results.
AvailabilityKingspan Thermataper® Systems are available throughspecialist insulation distributors and selected roofing merchantsthroughout the UK, Ireland and Europe.
PackagingThe boards are supplied in labelled packs shrinkwrapped inpolythene. The labels show product name, board size, typeand quantity. Each pack contains one board type whichfacilitates the laying of the system.
StorageThe packaging of Kingspan Thermataper® Systems should not be considered adequate for long term outside protection.Ideally boards should be stored inside a building. If however,outside storage cannot be avoided the boards should bestacked clear of the ground and covered with a polythenesheet or weatherproof tarpaulin. Boards that have beenallowed to get wet should not be used.
Health and SafetyKingspan Insulation products are chemically inert and safe touse. A leaflet on this topic which satisfies the requirements setout in the Control of Substances Hazardous to HealthRegulations 1988 (COSHH) is available from the KingspanInsulation Marketing Department (see rear cover).
Warning – do not stand on or otherwise support your weight on this board unless it is fullysupported by a load bearing surface.
Kingspan Thermataper® TT46 LPC/FM Only:
Please note that the reflective surface on this product is designed to enhance its thermalperformance. As such, it will reflect light as well as heat, including ultraviolet light. Therefore, ifthis board is being installed during very bright or sunny weather, it is advisable to wear UVprotective sunglasses or goggles, and if the skin is exposed for a significant period of time, toprotect the bare skin with a UV block sun cream.
The reflective facing used on this product can be slippery underfoot when wet. Therefore, it isrecommended that any excess material should be contained to avoid a slip hazard.
Design ConsiderationsSustainabilityIn the past, erroneously, the relative environmental sustainabilityof insulation materials has been compared on the basis ofembodied energy and ozone depletion potential. It is nowrecognised that a much wider basket of embodiedenvironmental impacts (including those caused by theirembodied energy), rather than embodied energy alone, is theonly credible tool of comparison. Time has also annulled ozonedepletion potential as an issue as all insulation materials arenow banned from using CFC and HCFC blowing agents by law.
For buildings designed to today’s Building Regulations energyuse standards it is now also known that the embodiedenvironmental impacts of all of the materials and labour usedto create a building are insignificant in comparison with thelifetime operational environmental impacts of that building, andso are of very limited importance. Since it is operational energyuse that creates the vast majority of operational environmentalimpact, saving energy by specifying the lowest U–valuespossible is the most environmentally sustainable action to take.
However, one of the most neglected facts aboutenvironmentally sustainable buildings is that the longevity oftheir standards of operational energy use, and therefore thelongevity of their operational environmental impacts, is critical.The performance of some insulants, such as mineral fibre, candeteriorate rapidly if exposed to water penetration, airmovement or compression. This may increase operationalenergy use and hence compromise the environmentalsustainability of the finished building to an alarming degree.Other insulation materials, such as rigid phenolic or rigidurethane, are not vulnerable to any of these problems.
In summary, designers should:
(a) specify the lowest possible U–value regardless of insulationtype;
(b) design out the risk of their chosen insulant not performingas specified; and
(c) if the latter is not possible, choose an insulant that is at lowrisk of failure e.g. a cellular plastic insulation material.
However, manufacturers should not rest on their laurels; it is amatter of social responsibility to be open and honest about theenvironmental impact of the manufacture of a product, and afull Life Cycle Analysis (LCA) based on a much wider basket ofenvironmental impacts, rather than embodied energy alone, isrecognised as the preferred tool to achieve this. KingspanInsulation was the first insulation manufacturer to openlycomplete and publish independently certified Ecoprofiles (a type of LCA) on its product ranges. The Ecoprofile for theKingspan Therma™ range of rigid urethaneinsulation products was performed by BuildingResearch Establishment (BRE). The product rangecomfortably achieves a BRE Green Guide A rating.
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Systems
10
Design ConsiderationsKingspan Thermataper® TT40 is tapered insulation designedfor use under partially bonded built–up felt roofing systems.
Roof WaterproofingKingspan Thermataper® TT40 is suitable for use with mostbitumen based waterproofing systems including highperformance types which incorporate and are compatible witha Type 3G perforated base layer to BS 747: 2000 (Reinforcedbitumen sheets for roofing. specification). The 3G felt layer islaid dry and loose, mineral face down with a fully bondedperimeter zone. The roof waterproofing should be applied assoon as possible after the laying of the boards. The built–uproof specification should be laid where applicable inaccordance with BS 8217: 2005 (Reinforced bitumenmembranes for roofing. Code of practice). Certain approvedsingle ply membranes are also compatible.
Please Note: Kingspan Thermataper® TT40 is unsuitable for use with mastic asphaltwaterproofing.
Water Vapour Control Kingspan Thermataper® TT40 should be installed over aseparate vapour control layer. The type of vapour control layerrequired will be dependent upon the chosen method of fixingthe board. For mechanically fixed applications a minimumvapour control layer should consist in a 1000 gauge (250micron) polythene sheet, with all joints lapped and then sealedwith double sided self adhesive tape. For applications which theboard is to be bonded bituminously, a minimum vapour controllayer should consist in a coated roofing felt (e.g. Type 3B)conforming to BS 747: 2000 (Reinforced bitumen sheets forroofing. Specification). For applications where the boards are tobe bonded using a proprietary adhesive system the advice ofthe adhesive manufacturer should be sought.
Allowance should be made for the adequate bonding of thevapour control layer to the deck so as to provide a suitablesurface onto which the Kingspan Thermataper® TT40 is tobe laid and to provide a sufficient resistance to wind up–lift(see ‘Wind Loading’ page 8).
Cold BridgingReasonable provision must be made to limit the effects of coldbridging. The design should ensure that roof–light or ventilatorkerbs etc. are always insulated to a similar standard as thegeneral roof area. A 25 mm thick insulation upstand of at least150 mm should be used around the perimeter of the roof onthe internal façade of the parapet. The exposed face of theinsulation must be lined with 20 mm exterior grade plywoodprior to the application of the waterproofing layer. Wall insulationshould also be carried up into the parapet creating an ‘overlap’of insulation. Please contact the Kingspan Insulation TechnicalService Department (see rear cover) for further advice.
Specification ClauseKingspan Thermataper® TT40 should be described inspecifications as:–
The roof insulation shall be Kingspan Thermataper® TT40____mm thick comprising a CFC/HCFC–free rigid urethanecore with bitumen impregnated glass tissue facings on bothsides manufactured to the highest standards in accordancewith both the requirements of BS 4841–3 and quality controlsystems approved to BS EN ISO 9001: 2000 by KingspanInsulation Limited and shall be applied in accordance with theinstructions issued by them.
Details also available in NBS Plus.NBS users should refer to clause(s):J41 420, J41 430(Standard and Intermediate)J41 10 (Minor Works)
Typical Design Detail
TT40 Systems
3 layer built–up felt roofingutilising 3G felt base layerpartially bonded
Insulation angle fillet
3G felt base layerto BS 747: 2000
Fully bondedperimeter
Vapour control layerTimber joists
KingspanThermataper®
TT40
Damp proof course (DPC)
KingspanKooltherm®
K8 Cavity BoardDPC to drain internally orexternally as specified
Typical U—valuesKingspan Thermataper® TT40 can easily meet all U–valuesrequired for compliance with Building Regulations / Standardsrevised after the year 2006. A detailed U–value calculationtogether with condensation risk analysis should be completedfor each individual project. Please contact the KingspanInsulation Tapered Roofing Department (see rear cover) forassistance.
SiteworkLaying PatternThe Kingspan Insulation working drawings will indicate the areaof the roof to be covered, the minimum insulation level, falldirection and pitch of the tapered system. The location of eachboard type will be indicated clearly on the drawing and eachpack will contain one board type only.
Ridges, hips and valleys will be marked on the drawings,together with the setting out, commencement points for layingof the boards. The flat packer boards used to raise the heightof the tapered system should be laid so that where possiblethey are staggered with respect to the tapered boards on top.The packer boards should preferably be bonded in hotbitumen (or see ‘Mechanical Fixings’).
Fixing over Metal DecksOn metal decks, Kingspan Thermataper® TT40 should be laidover the vapour control layer. The boards are commonlysecured using mechanical fixings and washers. KingspanThermataper® TT40 should be laid break–bonded, either withthe long edges at right angles to the trough openings ordiagonally across the corrugation line. Whichever system ischosen, care must be taken to ensure that all joints aresupported by the deck. The joints should be lightly butted.Alternatively the boards can be either laid into hot bitumen(max. temperature 240ºC) mopped or poured over the vapourcontrol layer or with the use of suitable alternative proprietaryadhesive systems. However, advice should be sought from theappropriate manufacturer of the adhesive system for theirrecommendations on the correct procedure for applicationrates and application temperatures.
Fixing over Concrete DecksConcrete decks should be clean, dry, without large projections,steps or gaps. To ensure an adequate bond between thevapour control layer and the concrete deck, the concrete orscreeded surface should be suitably primed, in accordancewith the specified manufacturer’s instructions. The vapourcontrol layer should be fully bonded to the deck and similarlythe Kingspan Thermataper® TT40 to the vapour control layerby laying into hot bitumen mopped or poured over the vapourcontrol layer or with the use of suitable alternative proprietaryadhesive systems. However, advice should be sought from theappropriate manufacturer of the adhesive system for theirrecommendations on the correct procedure for applicationrates and application temperatures. Alternatively the boardscan be secured using mechanical fixing systems. The boardsshould be laid break–bonded with all joints lightly butted.
Fixing over Plywood DecksKingspan Thermataper® TT40 should be fully bedded in hotbitumen or with the use of suitable alternative proprietaryadhesive systems. However, advice should be sought from theappropriate manufacturer of the adhesive system for theirrecommendations on the correct procedure for applicationrates and application temperatures over a continuous vapourcontrol layer, which has been nailed or fully bonded to thedeck, with laps at the side and end sealed with either the useof hot bitumen or one the alternative proprietary adhesivesystems as detailed previously. Alternatively the boards can besecured using mechanical fixing systems. Alternatively theboards can be secured using mechanical fixing systems.The boards should be laid break–bonded, either with the longedges at right angles to the edge or diagonally across the roof.Joints should be lightly butted.
Fixing over Tongue and Groove DecksOn timber tongue and groove decks, the vapour control layershould be nailed. The Kingspan Thermataper® TT40 is thenapplied as described within “Fixing over Plywood Decks’’.During the laying of Kingspan Thermataper® TT40 the nailheads will become sealed with either the use of hot bitumen or one of the alternative proprietary adhesive systems asdetailed previously for plywood decks to the vapour controllayer by the subsequent bonding of the roofboard.
Fixing over Woodwool DecksWoodwool decks should be clean and free of largeprojections, steps or gaps. Kingspan Thermataper® TT40should be fully bedded in hot bitumen or with the use ofsuitable alternative proprietary adhesive systems. However,advice should be sought from the appropriate manufacturer ofthe adhesive system for their recommendations on the correctprocedure for application rates and application temperaturesover a continuous vapour control layer. The boards should belaid break -bonded, either with the long edges at right anglesto the edge or diagonally across the roof. Joints should belightly butted. Board joints should not coincide with those ofthe slabs. Alternatively boards can be secured using specialistmechanical fixing systems.
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Mechanical FixingsThe number of mechanical fixings required to fix the KingspanThermataper® TT40 boards will vary with the geographicallocation of the building, the topographical data and the heightand width of the roof concerned.
Each fixing should incorporate a square or circular platewasher (50 mm x 50 mm or 50 mm diameter).
A minimum 5 No. fixings should be placed within the individual board area and be sited > 50 mm and < 150 mmfrom the edges and corners of the board giving a minimumfixing rate of 3.47 fixings per square metre (1200 x 1200 mmboards). Packer boards (if required) should be secured using a single fixing prior to the overlay of the KingspanThermataper® Systems.
Daily Working PracticeAt the completion of each day’s work, or whenever work isinterrupted for extended periods of time, a night joint must bemade in order to prevent water penetration of the roofconstruction.
CuttingCutting should be carried out either by using a fine toothedsaw, or by scoring with a sharp knife, snapping the board overa straight edge and then cutting the facing on the other side.Ensure accurate trimming to achieve close–butting joints andcontinuity of insulation.
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Product DescriptionKingspan Thermataper® TT40 is the tapered version ofKingspan Thermaroof™ TR20.
The FacingsKingspan Thermataper® TT40 is faced on both sides withbitumen impregnated glass tissue autohesively bonded to theinsulation core during manufacture.
The CoreThe core of Kingspan Thermataper® TT40 is a highperformance CFC/HCFC–free rigid urethane insulant. KingspanThermataper® TT40 has a typical density 32 kg/m3.
CFC/HCFC–freeKingspan Thermataper® TT40 is manufacturedwithout the use of CFCs/HCFCs and has zeroOzone Depletion Potential (ODP).
Product DataStandards and ApprovalsKingspan Thermataper® TT40 is manufactured to the higheststandards in accordance with requirements of BS 4841–3(Rigid polyisocyanurate (PIR) and polyurethane (PUR) productsfor building end–use applications. Specification for laminatedboards (roofboards) with auto–adhesively or separately bondedfacings for use as roofboard thermal insulation under built–upbituminous roofing membranes) and under quality controlsystems approved to BS EN ISO 9001: 2000 / I.S. EN ISO9001: 2000 (Quality management systems. Requirements).
Its use is covered by BBA Certificate 97/3364.
Standard DimensionsKingspan Thermataper® TT40 is available in the followingstandard size:
Unlimited maximum†*On systems with a 1:120 fall the minimum thickness is 30 mm.†Packer boards will be required above a specific thickness.
007
Manufactured to BS EN ISO 9001: 2000Certificate No. 388
TT40 Systems
BBABRITISHBOARD OFAGRÉMENT
CERTIFICATE 97/3364
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Thermal Properties
The λ–values and R–values quoted are in accordancewith the Harmonised European Standard BS EN 13165:
2001 (Thermal insulation products for buildings –Factory made rigid polyurethane foam (PUR) products
– Specification) using so called 90 / 90 principles.Comparison with alternative products may not
be appropriate unless the same procedures have been followed.
Thermal ConductivityThe boards achieve a thermal conductivity (λ–value) of 0.028 W/m.K (insulant thickness < 80 mm) and 0.027 W/m.K(insulant thickness 80–119 mm).
Thermal ResistanceThermal resistance (R–value), varies with thickness and iscalculated by dividing the thickness of the board (expressed in metres) by its thermal conductivity.
Taper GradientsKingspan Thermataper® TT40 is available ex stock in falls of1:60 and 1:80.
Insulation Compressive StrengthTypically exceeds 150 kPa at 10% compression and 125 kPaat 5% compression when tested to BS EN 826: 1996 (Thermalinsulating products for building applications. Determination ofcompression behaviour).
Water Vapour ResistanceModified to include board facings, the boards achieve aresistance greater than 15 MN.s/g, when tested in accordancewith BS 4370–2: 1993 (Methods of test for rigid cellularmaterials. Methods 7 to 9). Kingspan Thermataper® TT40should always be installed over a separate vapour control layer(see ‘Water Vapour Control’ page 10).
DurabilityIf correctly applied, Kingspan Thermataper® TT40 has anindefinite life. Its durability depends on the supporting structureand the conditions of its use.
Fire PerformanceKingspan Thermataper® TT40 when subjected to BritishStandard fire tests achieve the following typical results, whenwaterproofed with 3 layer built–up felt and a loading coat of 10 mm chippings. For specifications without the chippingsplease consult the manufacturer of the mineral surfaced capsheet for their fire classification details.
Test Result
BS 476–3: 1958 FAA rating (External fire exposure roof test)
Further details on the fire performance of Kingspan Insulationproducts may be obtained from the Kingspan InsulationTapered Roofing Department (see rear cover).
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Specification ClauseKingspan Thermataper® TT42 should be described inspecifications as:–
The roof insulation shall be Kingspan Thermataper® TT42comprising ____mm thick CFC/HCFC–free rigid urethane and20 mm thick cork facing autohesively bonded to the insulationcore with armature during manufacture to the higheststandards under quality control systems approved to BS ENISO 9001: 2000 by Kingspan Insulation Limited and shall beapplied in accordance with the instructions issued by them.
Details also available in NBS Plus.NBS users should refer to clause(s):J21 420, J21 430, J41 420, J41 430(Standard and Intermediate)J21 10, J41 10 (Minor Works)
Design ConsiderationsKingspan Thermataper® TT42 is tapered insulation designedfor use under fully bonded built–up felt and mastic asphaltroofing systems.
The board allows full bonding of the waterproofing layer to thecork surface, providing maximum resistance to uplift.
Roof WaterproofingKingspan Thermataper® TT42 is designed for use with mostbitumen based waterproofing systems, including highperformance types which incorporate 2 layer fully bonded felts.It is also suited to mastic asphalt waterproofing systems. The roof waterproofing should be applied as soon as possibleafter the laying of the boards. The built–up roof specificationshould be laid where applicable in accordance with BS 8217:2005 (Reinforced bitumen membranes for roofing. Code ofpractice) and BS 8218: 1998 (Code of practice for masticasphalt roofing). Mastic asphalt should always be laid over anisolating layer of Type 4A sheathing felt to BS 747: 2000(Reinforced bitumen sheets for roofing. Specification). Certainapproved single–ply membranes are also compatible.
Cold BridgingReasonable provision must be made to limit the effects of coldbridging. The design should ensure that roof–light or ventilatorkerbs etc. are always insulated to a similar standard as thegeneral roof area. A 25 mm thick insulation upstand of at least150 mm should be used around the perimeter of the roof onthe internal façade of the parapet. The exposed face of theinsulation must be lined with 20 mm exterior grade plywoodprior to the application of the waterproofing layer. Wall insulationshould also be carried up into the parapet creating an ‘overlap’of insulation. Please contact the Kingspan Insulation TechnicalService Department (see rear cover) for further advice.
Water Vapour ControlKingspan Thermataper® TT42 should be installed over aseparate vapour control layer. A minimum vapour control layer should consist of a coated roofing felt complying with BS 747: 2000 Type 3B, or any appropriate metal–coredvapour control layer.
Allowance should be made for the adequate bonding of thevapour control layer to the deck so as to provide a suitablesurface onto which the Kingspan Thermataper® TT42 is to be laid and to provide a sufficient resistance to wind up–lift (see ‘Wind Loading’ page 8).
Metal decks and concrete decks should be primed prior to theapplication of the hot bitumen used to bond the vapour controllayer to the deck.
The specified vapour control layer should be continued 250 mm past insulation abutting the parapet and sealed.Ensure compatible materials are used.
Typical Design Detail
TT42 Systems
Type 4A sheathing feltto BS 747: 2000
20 mm two coat mastic asphalton loose laid sheathing felt
Concrete deck
Vapour control layer
DPC to drain internally orexternally as specified
Screed to falls
KingspanThermataper®
TT42
Damp proof course (DPC)
KingspanKooltherm®
K8 Cavity Board
Fixing over Plywood DecksKingspan Thermataper® TT42 should be fully bedded in hotbitumen or with the use of suitable alternative proprietaryadhesive systems. However, advice should be sought from theappropriate manufacturer of the adhesive system for theirrecommendations on the correct procedure for applicationrates and application temperatures over a continuous vapourcontrol layer, which has been nailed or bonded to the deckwith laps at the side and end sealed with either the use of hotbitumen or one the alternative proprietary adhesive systems as detailed previously. Alternatively the boards can be securedusing mechanical fixing systems. The boards should be laidbreak–bonded, either with the long edges at right angles to the edge or diagonally across the roof. Joints should belightly butted.
Fixing over Tongue and Groove DecksOn timber tongue and groove decks, the vapour control layershould be nailed. The Kingspan Thermataper® TT42 is thenapplied as described within ‘Fixing over Plywood Decks’.During the laying of Kingspan Thermataper® TT42 the nailheads will become sealed with either the use of hot bitumen orone of the alternative proprietary adhesive systems as detailedpreviously for plywood decks to the vapour control layer by thesubsequent bonding of the roofboard.
Fixing over Woodwool DecksWoodwool decks should be clean and free of largeprojections, steps or gaps. Kingspan Thermataper® TT42should be fully bedded in hot bitumen or with the use ofsuitable alternative proprietary adhesive systems. However,advice should be sought from the appropriate manufacturer ofthe adhesive system for their recommendations on the correctprocedure for application rates and application temperaturesover a continuous vapour control layer. The boards should belaid break–bonded, either with the long edges at right anglesto the edge or diagonally across the roof. Joints should belightly butted. Board joints should not coincide with those ofthe slabs. Alternatively boards can be secured using specialistmechanical fixing systems.
Typical U—valuesKingspan Thermataper® TT42 can easily meet all U–valuesrequired for compliance with Building Regulations / Standardsrevised after the year 2002. A detailed U–value calculationtogether with condensation risk analysis should be completedfor each individual project. Please contact the KingspanInsulation Tapered Roofing Department (see rear cover) forassistance.
SiteworkLaying PatternThe working drawings supplied by Kingspan Insulation willindicate the area of the roof to be covered, the minimuminsulation level, fall direction and pitch of the tapered system.The location of each board type will be indicated clearly on thedrawing and each pack will contain one board type only.
Ridges, hips and valleys will be marked on the drawings,together with the setting out, commencement points for layingof the boards. The flat packer boards used to raise the heightof the tapered system should be laid so that where possiblethey are staggered with respect to the tapered boards on top.The packer boards should preferably be bonded in hotbitumen (or see ‘Mechanical Fixings’).
Fixing over Metal DecksOn metal decks, Kingspan Thermataper® TT42 should be laidover the vapour control layer. The boards are commonlysecured using mechanical fixings and washers. Thewaterproofing is also mechanically fixed (see ‘MechanicalFixings’). Kingspan Thermataper® TT42 should be laidbreak–bonded, either with the long edges at right angles to thetrough openings or diagonally across the corrugation line.Whichever system is chosen, care must be taken to ensurethat all joints are supported by the deck. The joints should belightly butted. Taping is not required.
Fixing over Concrete DecksConcrete decks should be clean, dry, without large projections,steps or gaps. To ensure an adequate bond between thevapour control layer and the concrete deck, the concrete orscreeded surface should be suitably primed, in accordancewith the specified manufacturer’s instructions. The vapourcontrol layer should be fully bonded to the deck and similarlythe Kingspan Thermataper® TT42 to the vapour control layerby laying into hot bitumen mopped or poured over the vapourcontrol layer or with the use of suitable alternative proprietaryadhesive systems. However, advice should be sought from theappropriate manufacturer of the adhesive system for theirrecommendations on the correct procedure for applicationrates and application temperatures. Alternatively the boardscan be secured using mechanical fixing systems. The boardsshould be laid break–bonded with all joints lightly butted.
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Pitched Or Sloping Roofs Any provisions for mechanical fixing of the waterproofing toprevent slippage of the cap sheet, should be made prior to theapplication of Kingspan Thermataper® TT42.
Mechanical FixingsThe number of mechanical fixings required to fix the KingspanThermataper® TT42 boards will vary with the geographicallocation of the building, the topographical data and the heightand width of the roof concerned.
Each fixing should incorporate a square or circular platewasher (50 mm x 50 mm or 50 mm diameter).
A minimum 4 No. fixings should be placed within the individualboard area and be sited > 50 mm and < 150 mm from theedges and corners of the board giving a minimum fixing rate of5.55 fixings per square metre (1200 x 600 mm boards). Packerboards (if required) should be secured using a single fixingprior to the overlay of the Kingspan Thermataper® Systems.
The requirement for additional fixings should be assessed inaccordance with BS 6399–2: 1997.
Daily Working PracticeAt the completion of each day’s work, or whenever work is interrupted for extended periods of time, a night joint must be made in order to prevent water penetration of the roof construction.
CuttingCutting should be carried out by using a fine toothed saw to fitroof openings and fixtures. Do not attempt to snap the board.Ensure accurate trimming to achieve close butting joints andcontinuity of insulation.
16
Standard DimensionsKingspan Thermataper® TT42 is available in the followingstandard size:
*Cork thickness is 10 mm on the thinnest tapered board in a system.†Packer boards will be required above a specific thickness.
Product DescriptionKingspan Thermataper® TT42 is the tapered version ofKingspan Thermaroof™ TR22.
The Upper FacingThe upper facing of Kingspan Thermataper® TT42 is anautohesively bonded cork roofboard of typical density 120kg/m3, manufactured from pure granulated cork, compressed,steam baked and held together by the natural cork gum.
The CoreThe core of Kingspan Thermataper® TT42 is a highperformance CFC/HCFC–free rigid urethane insulant. KingspanThermataper® TT42 has a typical density 32 kg/m3, whichincorporates a patented glass tissue armature.
The Lower FacingThe lower facing of Kingspan Thermataper® TT42 is a glasstissue which is compatible with most forms of bitumen bonding.
CFC/HCFC–freeKingspan Thermataper® TT42 is manufacturedwithout the use of CFCs/HCFCs and has zeroOzone Depletion Potential (ODP).
Product DataStandards and ApprovalsKingspan Thermataper® TT42 is manufactured to the higheststandards under a quality control system approved to BS ENISO 9001: 2000 (Quality management systems. Requirements).
007
Manufactured to BS EN ISO 9001: 2000Certificate No. 388
TT42 Systems
17
Thermal Properties
The λ–values and R–values quoted are in accordancewith the Harmonised European Standard BS EN 13165:
2001 (Thermal insulation products for buildings –Factory made rigid polyurethane foam (PUR) products
– Specification) using so called 90 / 90 principles.Comparison with alternative products may not
be appropriate unless the same procedures have been followed.
Thermal Conductivity The thermal conductivity (λ–value) of the cork component ofKingspan Thermataper® TT42 is 0.042 W/m.K.
The thermal conductivity of the insulation core of KingspanThermataper® TT42 is 0.027 W/m.K (insulant thickness < 80 mm) and 0.026 W/m.K (insulant thickness 80–119 mm).
Thermal ResistanceThermal resistance (R–value) varies with thickness and iscalculated by dividing the thickness of the board (expressed inmetres) by its thermal conductivity.
* Product thickness = Insulant thickness + 10 mm cork.
** Product thickness = Insulant thickness + 20 mm cork.
Taper GradientsKingspan Thermataper® TT42 is available ex stock in falls of 1:60.
Compressive StrengthThe compressive strength of Kingspan Thermataper® TT42typically exceeds 150 kPa at 10% compression and 125 kPaat 5% compression when tested to BS EN 826: 1996 (Thermalinsulating products for building applications. Determination ofcompression behaviour).
Water Vapour ResistanceModified to include board facings, the boards achieve aresistance greater than 15 MN.s/g, when tested in accordancewith BS 4370–2: 1993 (Methods of test for rigid cellularmaterials. Methods 7 to 9). Kingspan Thermataper® TT42should always be installed over a vapour control layer (see‘Water Vapour Control’ page 14).
DurabilityIf correctly applied, Kingspan Thermataper® TT42 has anindefinite life. Its durability depends on the supporting structureand the conditions of its use.
Fire PerformanceKingspan Thermataper® TT42 when subjected to BritishStandard fire tests achieve the following typical results, whenwaterproofed with 2 layer built–up felt or using 2 layers ofmastic asphalt, either finished with 10 mm mineral chippings.For specifications without the chippings on built–up felt pleaseconsult the manufacturer of the mineral surfaced cap sheet fortheir fire classification details.
Further details on the fire performance of Kingspan Insulationproducts may be obtained from the Kingspan InsulationTapered Roofing Department (see rear cover).
Test Result
BS 476–3: 1958 FAA rating (External fire exposure roof test)
Specification ClauseKingspan Thermataper® TT46 LPC/FM should be describedin specifications as:–
The roof insulation shall be Kingspan Thermataper® TT46LPC/FM ____mm thick, approved by the LPCB to LPS 1181:2003 Part 1 and Factory Mutual Research, USA comprising aCFC/HCFC–free rigid urethane core with low emissivitycomposite foil facings on both sides manufactured to thehighest standards in accordance with both the requirements of BS 4841–4 and quality control systems approved to BS EN ISO 9001: 2000 / I.S. EN ISO 9001: 2000 by KingspanInsulation Limited and shall be applied in accordance with theinstructions issued by them.
Details also available in NBS Plus.NBS users should refer to clause(s):J42 420, J42 430(Standard and Intermediate)J42 10 (Minor Works)
Design ConsiderationsKingspan Thermataper® TT46 LPC/FM is tapered insulationdesigned for use under PVC single–ply mechanically fixedroofing systems.
Fire PerformanceDesigners, specifiers and end users are offered peace of mindby the fact that Kingspan Thermataper® TT46 LPC/FMinsulation boards are now available with the dual approval ofthe widely respected Loss Prevention Certification Board andthe Factory Mutual Research Corporation, USA, for achievingmarket leading levels of performance.
The Kingspan Thermataper® TT46 LPC/FM carriesindependent approval under LPS 1181: 2003 Part 1 by theLoss Prevention Certification Board and is certified as meetingthe Factory Mutual Research Standard 4450 (1989) and 4470(1986) Approval requirements for Class 1 Insulated Steel DeckRoofs. Kingspan Insulation is the first to manufacturer toachieve both of these prestigious approvals with zero ODPhigh efficiency insulation boards.
Roof WaterproofingKingspan Thermataper® TT46 LPC/FM is suitable for use with most mechanically fixed PVC waterproofing membranes.
Please note: Kingspan Thermataper® TT46 LPC/FM is not suitable for use with bitumenbased built–up roofing systems or mastic asphalt.
Water Vapour ControlKingspan Thermataper® TT46 LPC/FM should be installedover a separate vapour control layer. A minimum vapourcontrol layer should consist in a 1000 gauge (250 micron)polythene sheet, with all joints lapped and then sealed withdouble sided self adhesive tape.
The specified vapour control layer should be continued 250 mm past the insulation abutting the parapet and sealed.
18
Typical Design Detail
TT46 LPC/FM Systems
Single–ply non–bituminousmembrane
Metal decking
Vapour controllayer (if required)
DPC to drain internally or externally as specified
Damp proof course (DPC)
KingspanThermataper®
TT46 LPC/FM
KingspanKooltherm®
K8 Cavity Board
Purlin e.g. WardMultibeam
Typical U—valuesKingspan Thermataper® TT46 LPC/FM can easily meet allU–values required for compliance with Building Regulations /Standards revised after the year 2002. A detailed U–valuecalculation together with condensation risk analysis should be completed for each individual project. Please contact theKingspan Insulation Tapered Roofing Department (see rearcover) for assistance.
SiteworkLaying PatternThe working drawings supplied by Kingspan Insulation willindicate the area of the roof to be covered, the minimuminsulation level, fall direction and pitch of the tapered system.The location of each board type will be indicated clearly on thedrawing and each pack will contain one board type only.
Ridges, hips and valleys will be marked on the drawings,together with the setting out, commencement points for layingof the boards. The flat packer boards used to raise the heightof the tapered system should be laid so that where possiblethey are staggered with respect to the tapered boards on top.The packer boards should preferably be bonded in hotbitumen (or see ‘Mechanical Fixings’).
Fixing over Metal DecksOn metal decks, Kingspan Thermataper® TT46 LPC/FMshould be laid over the vapour control layer. The boards arecommonly secured using mechanical fixings and washers. The waterproofing is also mechanically fixed (see ‘MechanicalFixings’). Kingspan Thermataper® TT46 LPC/FM should belaid break–bonded, either with the long edges at right angles tothe trough openings or diagonally across the corrugation line.Whichever system is chosen, care must be taken to ensure thatall joints are supported by the deck. The joints should be lightlybutted.
Fixing Over Concrete Decks Concrete decks should be clean, dry, without large projections,steps or gaps. The boards are commonly laid over a vapourcontrol layer and are secured using mechanical fixings andwashers. The waterproofing is also mechanically fixed (see‘Mechanical Fixing’). The boards should be laid break–bondedwith all joints lightly butted. The boards can also be restrainedthrough the use of ballast.
NB When concrete is applied to permanent metal shuttering, the normal drying out periodshould be allowed for priory to the application of the roof covering. A vapour control layershould also be adopted.
Fixing Over Timber Decks Timber decks should be clean and free of large projections,steps or gaps. On timber decks, Kingspan Thermataper®
TT46 LPC/FM should be laid over a vapour control layer, theside and end laps of which have been sealed. The boards arecommonly secured using mechanical fixing systems andwashers (see ‘Mechanical Fixing’). The boards should be laidbreak–bonded, either with the long edges at right angles to theedge or diagonally across the roof. Joints should be lightlybutted.
Fixing Over Woodwool Decks Woodwool decks should be clean and free of largeprojections, steps or gaps. Kingspan Thermataper® TT46LPC/FM should be laid over a vapour control layer, the sideand end laps of which have been sealed. Boards should belaid diagonally across the roof or alternatively with their longedges at right angles to the slabs. The boards should be laidbreak–bonded, either with the long edges at right angles to theedge or diagonally across the roof. Joints should be lightlybutted. The boards are commonly secured using themechanical fixings and washers (see ‘Mechanical Fixing’). Onlyspecialist fixings that fully penetrate the woodwool slabs andare locked on the underside should be specified or used. It isessential that the fixing cannot pull out of or through the woodwool slabs. The waterproofing is also mechanically fixed.
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Mechanical FixingsThe number of mechanical fixings required to fix KingspanThermataper® TT46 LPC/FM will vary with the geographicallocation of the building, the topographical data, and the heightand width of the roof concerned.
Each fixing should incorporate a square or circular washer (50 mm x 50 mm or 50 mm diameter).
The requirements for securing the waterproofing membraneshould be considered separately.
A minimum 11 No. fixings should be placed within theindividual board area and be sited > 50 mm and < 150 mmfrom the edges and corners of the board and be placed withinthe individual board area giving a minimum fixing rate of 3.8fixings per square metre (2.4 x 1.2 m boards). Packer boards(if required) should be secured using a single fixing prior to theoverlay of the Kingspan Thermataper® TT46 LPC/FM system.
The requirement for additional fixings should be assessed inaccordance with BS 6399–2: 1997.
Where alternative mechanical fixing systems that do not rely on large washers are specified, such as bar fixing systems, the specified system must give similar restraint to the board aswould be attained by the use of conventional washer andscrew systems.
FM ComplianceWhere an FM compliant roof assembly is required it isimportant that all the roof components also have FM approval.
Please contact the Kingspan Insulation Technical ServiceDepartment (see rear cover) for further advice on the above.
Daily Working PracticeThe foil face of Kingspan Thermataper® TT46 LPC/FM shouldnot be considered as temporary waterproofing. Boards shouldbe waterproofed as soon as possible after fixing.
At the completion of each day’s work, or whenever work is interrupted for extended periods of time, a night joint mustbe made in order to prevent water penetration of the roofconstruction.
CuttingCutting should be carried out either by using a fine toothedsaw, or by scoring with a sharp knife, snapping the board overa straight edge and then cutting the facing on the other side.Ensure accurate trimming to achieve close–butting joints andcontinuity of insulation.
20
Product DescriptionKingspan Thermataper® TT46 LPC/FM is the tapered versionof Kingspan Thermaroof™ TR26 LPC/FM.
The FacingsKingspan Thermataper® TT46 LPC/FM is faced on both sideswith a low emissivity composite foil autohesively bonded to theinsulation core during manufacture. The foil facing is highlyresistant to the transmission of water vapour.
The CoreThe core of Kingspan Thermataper® TT46LPC/FM is manufactured from trademarkedNilflam® technology (a high performance CFC/HCFC–freepolyisocyanurate (PIR) based formulation). KingspanThermataper® TT46 LPC/FM has a typical density of 32 kg/m3.
CFC/HCFC–freeKingspan Thermataper® TT46 LPC/FM ismanufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP).
Product DataStandards and ApprovalsKingspan Thermataper® TT46 LPC/FM is manufactured to the highest standards in accordance with requirements of BS 4841–3 (Rigid polyisocyanurate (PIR) and polyurethane(PUR) products for building end–use applications. Specificationfor laminated boards (roofboards) with auto–adhesively orseparately bonded facings for use as roofboard thermalinsulation under built–up bituminous roofing membranes) andunder quality control systems approved to BS EN ISO 9001:2000 / I.S. EN ISO 9001: 2000 (Quality management systems.Requirements).
Standard DimensionsKingspan Thermataper® TT46 LPC/FM is available in thefollowing standard size:
*On systems with a 1:120 fall the minimum thickness is 30 mm.†Packer boards will be required above a specific thickness.
007
Manufactured to BS EN ISO 9001: 2000Certificate No. 388
I.S. EN ISO 9001: 2000Registration No. 19.0633
TT46 LPC/FM Systems
21
Insurance RatingKingspan Thermataper® TT46 LPC/FM carries independentapproval under LPS 1181: 2003 Part 1 by the Loss PreventionCertification Board and is certified as meeting the Factory Mutual Research Standard 4450 (1989) and 4470(1986) subject to the conditions of Approval as a roofinsulation for use in Class 1 roof construction as described inthe current edition of Factory Mutual Research Approval Guide.Kingspan Insulation is thefirst manufacturer toachieve both theseprestigious approvals withzero ODP high efficiencyinsulation boards.
Thermal Properties
The λ–values and R–values quoted are in accordancewith the Harmonised European Standard BS EN 13165:
2001 (Thermal insulation products for buildings –Factory made rigid polyurethane foam (PUR) products
– Specification) using so called 90 / 90 principles.Comparison with alternative products may not
be appropriate unless the same procedures have been followed.
Thermal ConductivityThe boards achieve a thermal conductivity (λ–value) of 0.023 W/m.K.
Thermal ResistanceThermal resistance (R–value) varies with thickness and iscalculated by dividing the thickness of the board (expressed inmetres) by its thermal conductivity.
Taper GradientsKingspan Thermataper® TT46 LPC/FM is available ex stock infalls of 1:60 and 1:80.
Compressive StrengthThe compressive strength of Kingspan Thermataper® TT46LPC/FM typically exceeds 150 kPa at 10% compression and125 kPa at 5% when tested to BS EN 826: 1996 (Thermalinsulating products for building applications. Determination ofcompression behaviour).
Water Vapour ResistanceModified to include board facings, the boards achieve aresistance far greater than 100 MN.s/g when tested inaccordance with BS 4370–2: 1993 (Methods of test for rigidcellular materials. Methods 7 to 9). Kingspan Thermataper®
TT46 LPC/FM should be installed over a vapour control layer(see ‘Water Vapour Control’ page 18).
DurabilityIf correctly applied, Kingspan Thermataper® TT46 LPC/FMhas an indefinite life. Its durability depends on the supportingstructure and the conditions of its use.
Fire PerformanceKingspan Thermataper® TT46 LPC/FM, when assessed to the following internationally accredited full construction testmethods, achieves the following results.
Further details on the fire performance of Kingspan Insulationproducts may be obtained from the Kingspan InsulationTechnical Service Department (see rear cover).
Test Result
Factory Mutual Research Class 1Standard 4450 (1989) and Insulated Steel 4470 (1986) Class 1 Deck PassInsulated Steel Deck RoofsLoss Prevention Certification Ext–B PassBoard LPS 1181: Part 1: Issue 1 – Requirements and tests for built–up systems for use as the external envelope of buildings.BS 476–3: 1958 Dependant on single ply(External fire exposure roof test) membrane adopted
LPS 1181: 2003 Part 1Certificate No. 388b/01
Class 1 RoofConstruction
Specification ClauseKingspan Thermataper® TT47 LPC/FM should be describedin specifications as:–
The roof insulation shall be Kingspan Thermataper® TT47LPC/FM ____mm thick, approved by the LPCB to LPS 1181:2003 Part 1 and Factory Mutual Research, USA, comprising aCFC/HCFC–free rigid urethane core with coated glass facingson both sides manufactured to the highest standards inaccordance with the requirements of BS 4841–3, BS 4841–4and quality control systems approved to BS EN ISO 9001:2000 by Kingspan Insulation Limited and shall be applied inaccordance with the instructions issued by them.
Details also available in NBS Plus.NBS users should refer to clause(s):J42 420, J42 430(Standard and Intermediate)J42 10 (Minor Works)
Design ConsiderationsKingspan Thermataper® TT47 LPC/FM is tapered insulationdesigned for use under fully adhered single–ply waterproofingusing solvent based adhesives.
Fire PerformanceDesigners, specifiers and end users are offered peace of mindby the fact Kingspan Thermataper® TT47 LPC/FM insulationboards are now available with the dual approval of the widelyrespected Loss Prevention Certification Board and the FactoryMutual Research Corporation, USA, for achieving marketleading levels of performance.
The Kingspan Thermataper® TT47 LPC/FM carriesindependent approval under LPS 1181: 2003 Part 1 by theLoss Prevention Certification Board and is certified as meetingthe Factory Mutual Research Standard 4450 (1989) and 4470(1986) Approval requirements for Class 1 Insulated Steel DeckRoofs. Kingspan Insulation is the first to manufacturer toachieve both of these prestigious approvals with zero ODPhigh efficiency insulation boards.
Roof WaterproofingKingspan Thermataper® TT47 LPC/FM is suitable for use with most fully adhered and mechanically fixed PVC or EPDM single–ply waterproofing membranes. Please contactthe Kingspan Insulation Tapered Roofing Department to checkwaterproofing membrane and proprietary adhesive system for compatibility.
Please Note: Kingspan Thermataper® TT47 LPC/FM is suitable for use with bitumen basedbuilt–up roofing systems or mastic asphalt.
Water Vapour ControlKingspan Thermataper® TT47 LPC/FM should be installedover a separate vapour control layer. The type of vapour controllayer required will be dependent upon the chosen method offixing the board. For mechanically fixed applications a minimumvapour control layer should consist in a 1000 gauge (250micron) polythene sheet, with all joints lapped and then sealedwith double sided self adhesive tape. For applications which theboard is to be bonded bituminously, a minimum vapour controllayer should consist in a coated roofing felt (e.g. Type 3B)conforming to BS 747: 2000 (Reinforced bitumen sheets forroofing. Specification). For applications where the boards are tobe bonded using a proprietary adhesive system the advice ofthe adhesive manufacturer should be sought.
Allowance should be made for the adequate bonding of thevapour control layer to the deck so as to provide a suitablesurface onto which the Kingspan Thermataper® TT47 LPC/FMis to be laid and to provide a sufficient resistance to windup–lift (see ‘Wind Loading’ page 8).
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Typical Design Detail
TT47 LPC/FM Systems
Single–ply non–bituminousmembrane
Metal decking
Vapour controllayer (if required)
DPC to drain internally or externally as specified
Damp proof course (DPC)
KingspanThermataper®
TT47 LPC/FM
KingspanKooltherm®
K8 Cavity Board
Purlin e.g. WardMultibeam
Fixing over Plywood DecksKingspan Thermataper® TT47 LPC/FM should be fully beddedin hot bitumen or with the use of suitable alternative proprietaryadhesive systems. However, advice should be sought from theappropriate manufacturer of the adhesive system for theirrecommendations on the correct procedure for applicationrates and application temperatures over a continuous vapourcontrol layer, which has been nailed or fully bonded to the deck,with laps at the side and end sealed with either the use of hotbitumen or one the alternative proprietary adhesive systems asdetailed previously. Alternatively the boards can be securedusing mechanical fixing systems. Alternatively the boards canbe secured using mechanical fixing systems. The boardsshould be laid break–bonded, either with the long edges atright angles to the edge or diagonally across the roof. Jointsshould be lightly butted.
Fixing over Tongue and Groove DecksOn timber tongue and groove decks, the vapour control layershould be nailed. The Kingspan Thermataper® TT47 LPC/FMis then applied as described under plywood decks. During thelaying of Kingspan Thermataper® TT47 LPC/FM the nailheads will become sealed with either the use of hot bitumen orone of the alternative proprietary adhesive systems as detailedpreviously for plywood decks to the vapour control layer by thesubsequent bonding of the roofboard.
Fixing over Woodwool DecksWoodwool decks should be clean and free of largeprojections, steps or gaps. Kingspan Thermataper® TT47LPC/FM should be fully bedded in hot bitumen or with the useof suitable alternative proprietary adhesive systems. However,advice should be sought from the appropriate manufacturer ofthe adhesive system for their recommendations on the correctprocedure for application rates and application temperaturesover a continuous vapour control layer. The boards should belaid break–bonded, either with the long edges at right anglesto the edge or diagonally across the roof. Joints should belightly butted. Board joints should not coincide with those ofthe slabs. Alternatively boards can be secured using specialistmechanical fixing systems.
Typical U—valuesCan easily meet all U–values required for compliance withBuilding Regulations / Standards revised after the year 2002. A detailed U–value calculation together with condensation riskanalysis should be completed for each individual project.Please contact the Kingspan Insulation Tapered RoofingDepartment (see rear cover) for assistance.
SiteworkLaying PatternThe Kingspan Insulation working drawings will indicate the areaof the roof to be covered, the minimum insulation level, falldirection and pitch of the tapered system. The location of eachboard type will be indicated clearly on the drawing and eachpack will contain one board type only.
Ridges, hips and valleys will be marked on the drawings,together with the setting out, commencement points for layingof the boards. The flat packer boards used to raise the heightof the tapered system should be laid so that where possiblethey are staggered with respect to the tapered boards on top.The packer boards should preferably be bonded in hotbitumen (or see ‘Mechanical Fixing’).
Fixing over Metal DecksOn metal decks, Kingspan Thermataper® TT47 LPC/FMshould be laid over the vapour control layer. The boards arecommonly secured using mechanical fixings and washers.Kingspan Thermataper® TT47 LPC/FM should be laidbreak–bonded, either with the long edges at right angles to thetrough openings or diagonally across the corrugation line.Whichever system is chosen, care must be taken to ensure thatall joints are supported by the deck. The joints should be lightlybutted. Alternatively the boards can be either laid into hotbitumen (max. temperature 240ºC) mopped or poured over thevapour control layer or with the use of suitable alternativeproprietary adhesive systems. However, advice should besought from the appropriate manufacturer of the adhesivesystem for their recommendations on the correct procedure forapplication rates and application temperatures.
Fixing over Concrete DecksConcrete decks should be clean, dry, without large projections,steps or gaps. To ensure an adequate bond between thevapour control layer and the concrete deck, the concrete orscreeded surface should be suitably primed, in accordancewith the specified manufacturer’s instructions. The vapourcontrol layer should be fully bonded to the deck and similarlythe Kingspan Thermataper® TT47 LPC/FM to the vapourcontrol layer by laying into hot bitumen mopped or pouredover the vapour control layer or with the use of suitablealternative proprietary adhesive systems. However, adviceshould be sought from the appropriate manufacturer of theadhesive system for their recommendations on the correctprocedure for application rates and application temperatures.Alternatively the boards can be secured using mechanicalfixing systems. The boards should be laid break–bonded withall joints lightly butted.
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Mechanical FixingsThe number of mechanical fixings required to fix KingspanThermataper® TT47 LPC/FM will vary with the geographicallocation of the building, the topographical data and the heightand width of the roof concerned.
Each fixing should incorporate a square or circular platewasher (50 mm x 50 mm or 50 mm diameter).
The requirements for securing the waterproofing membraneshould be considered separately.
A minimum 5 No. fixings should be placed within the individualboard area and be sited > 50 mm and < 150 mm from theedges and corners of the board giving a minimum fixing rate of3.47 fixings per square metre (1200 x 1200 mm boards). Packerboards (if required) should be secured using a single fixing priorto the overlay of the Kingspan Thermataper® System.
NB If consideration is being given to bonding the boards either hot bitumen or with the use of suitable alternative proprietary adhesive system it is recommended that only the 1.2 x 0.6 mboard size is adopted.
NB In all instances board joints and cut edges should be taped with a minimum 50 mm foiltape prior to the application of the adhesive system and single layer roof waterproofing. Thesingle layer roof waterproofing and adhesive system should be applied strictly in accordancewith the appropriate manufacturers recommendations.
FM ComplianceWhere an FM compliant roof assembly is required it isimportant that all the roof components also have FM approval.
Please contact the Kingspan Insulation Technical ServiceDepartment (see rear cover) for further advice on the above.
Daily Working PracticeAt the completion of each day’s work, or whenever work is interrupted for extended periods of time, a night joint must be made in order to prevent water penetration of the roof construction.
CuttingCutting should be carried out either by using a fine toothedsaw, or by scoring with a sharp knife, snapping the board overa straight edge and then cutting the facing on the other side.Ensure accurate trimming to achieve close–butting joints andcontinuity of insulation.
Product DescriptionKingspan Thermataper® TT47 LPC/FM is the tapered versionof Kingspan Thermaroof™ TR27 LPC/FM.
The FacingsKingspan Thermataper® TT47 LPC/FM is faced on both sideswith a coated glass tissue autohesively bonded to theinsulation core during manufacture.
The CoreThe core of Kingspan Thermataper® TT47LPC/FM is manufactured from trademarkedNilflam® technology (a high performance CFC/HCFC–freepolyisocyanurate (PIR) based formulation). KingspanThermataper® TT47 LPC/FM has a typical density of 32 kg/m3.
CFC/HCFC–free Kingspan Thermataper® TT47 LPC/FM ismanufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP).
Product DataStandards and ApprovalsKingspan Thermataper® TT47 LPC/FM is manufactured to thehighest standards in accordance with the requirements of bothBS 4841–3 (Rigid polyisocyanurate (PIR) and polyurethane(PUR) products for building end–use applications. Specificationfor laminated boards (roofboards) with auto–adhesively orseparately bonded facings for use as roofboard thermalinsulation under built–up bituminous roofing membranes) andBS 4841–4 (Rigid polyisocyanurate (PIR) and polyurethane(PUR) products for building end–use applications. Specificationfor laminated boards (roofboards) with auto–adhesively orseparately bonded facings for use as roofboard thermalinsulation under single–ply roofing membranes).
Kingspan Thermataper® TT47 LPC/FM is manufactured to the highest standards under quality control systems approvedto BS EN ISO 9001: 2000 / I.S. EN ISO 9001: 2000 (Qualitymanagement systems. Requirements).
Its use is covered by BBA Certificate 06/4372.
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007
Manufactured to BS EN ISO 9001: 2000Certificate No. 388
I.S. EN ISO 9001: 2000Registration No. 19.0633
TT47 LPC/FM Systems
BBABRITISHBOARD OFAGRÉMENT
CERTIFICATE 06/4372
Standard DimensionsKingspan Thermataper® TT47 LPC/FM is available in thefollowing standard size:
†Packer boards will be required above a specific thickness.
Taper GradientsKingspan Thermataper® TT47 LPC/FM is available ex stock infalls of 1:60, 1:80 and 1:120.
Compressive StrengthThe compressive strength of Kingspan Thermataper® TT47LPC/FM typically exceeds 150 kPa at 10% compression and125 kPa at 5% when tested to BS EN 826: 1996 (Thermalinsulating products for building applications. Determination ofcompression behaviour).
Water Vapour ResistanceModified to include board facings, the boards achieve aresistance greater than 15 MN.s/g when tested in accordancewith BS 4370–2: 1993 (Methods of test for rigid cellularmaterials. Methods 7 to 9). Kingspan Thermataper® TT47LPC/FM should be installed over a vapour control layer (see‘Water Vapour Control’ page 22).
DurabilityIf correctly applied, Kingspan Thermataper® TT47 LPC/FMhas an indefinite life. Its durability depends on the supportingstructure and the conditions of its use.
Fire PerformanceKingspan Thermataper® TT47 LPC/FM, when assessed to the following internationally accredited full construction testmethods, achieves the following results.
Further details on the fire performance of Kingspan Insulationproducts may be obtained from the Kingspan InsulationTechnical Service Department (see rear cover).
Test Result
Factory Mutual Research Class 1Standard 4450 (1989) and Insulated Steel 4470 (1986) Class 1 Deck PassInsulated Steel Deck RoofsLoss Prevention Certification Ext–B PassBoard LPS 1181: 2003 Part 1–Issue 1 – Requirements and tests for built–up systems for use as the external envelope of buildings.BS 476–3: 1958 Dependant on single–ply (External fire exposure roof test) membrane adopted
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Insurance RatingThe Kingspan Thermataper® TT47 LPC/FM carriesindependent approval under LPS 1181: 2003 Part 1 by theLoss Prevention Certification Board and is certified as meetingthe Factory Mutual Research Standard 4450 (1989) and 4470(1986) subject to the conditions of Approval as a roofinsulation for use in Class 1 roof construction as described inthe current edition of Factory Mutual Research Approval Guide.Kingspan Insulation is thefirst manufacturer toachieve both theseprestigious approvals withzero ODP high efficiencyinsulation boards.
Thermal Properties
The λ–values and R–values quoted are in accordance with the Harmonised European Standard BS EN 13165:
2001 (Thermal insulation products for buildings – Factory made rigid polyurethane foam (PUR) products
– Specification) using so called 90 / 90 principles.Comparison with alternative products may not
be appropriate unless the same procedures have been followed.
Thermal ConductivityThe boards achieve a thermal conductivity (λ–value) of 0.027 W/m.K (insulant thickness < 80 mm) and 0.026 W/m.K(insulant thickness 80–119 mm).
Thermal ResistanceThermal resistance (R–value) varies with thickness and iscalculated by dividing the thickness of the board (expressed inmetres) by its thermal conductivity.
Refer to local distributor or Kingspan Insulation price list for current stock and non–stock sizes.
LPS 1181: 2003 Part 1Certificate No. 388b/02
Class 1 RoofConstruction
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Design considerationsUse Kingspan Thermacricket™ Systems (i.e. backfall systems) areavailable in the full range and can be installed to provideeffective and economical drainage of localised roof areas.When correctly applied, Kingspan Thermacricket™ Systemswill improve existing crossfalls or may be designed into a newconstruction in place of secret valley gutters.
SiteworkFixingKingspan Thermacricket™ Systems can be mechanically fixedor bedded in a layer of hot bitumen applied direct to theexisting roof, or to the vapour control layer and between layersin the system.
Kingspan Thermacricket™ Systems have to be cut on site bythe contractor. The boards are easy to cut and shape using apanel saw.
Existing Falls
Existing Falls
Existing FallsRidge
Typical Design Details
cricket™ Systems
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Kingspan InsulationKingspan Insulation offers an extensive range of premium and high performance insulation products, breathablemembranes and pre–insulated systems for the constructionindustry. Following an extensive investment programme,Kingspan Insulation is continuing to lead the insulation industry by manufacturing its insulation products with zeroOzone Depletion Potential (ODP) and quoting thermalperformance data in accordance with the new harmonisedEuropean Standards.
Kingspan Insulation Limited specialises in the solution ofinsulation problems. The Kingspan Insulation range of insulationproducts meet the exacting requirements of the constructionindustry and are produced to the highest standards, includingBS EN ISO 9001: 2000 / I.S. EN ISO 9001: 2000. Eachproduct has been designed to fulfil a specific need and hasbeen manufactured to precise standards and tolerances.
Insulation for:● Pitched Roofs
● Flat Roofs
● Cavity Walls
● Timber and Steel Framing
● Externally Insulated Cladding Systems
● Floors
● Soffits
Solutions:● Insulated Dry–Lining
● Tapered Roofing Systems
● Kingspan KoolDuct® Pre–Insulated Ducting
● Kingspan nilvent ® Breathable Membranes
The Kingspan Insulation Product RangeThe Kingspan Kooltherm® K–range● With a thermal conductivity of 0.021–0.024 W/m.K
CFC/HCFC–free rigid phenolic insulation is the mostthermally efficient insulation product commonly available.
● Utilises the thinnest possible insulation board to achieverequired U–values.
● Fire performance can be equivalent to mineral fibre.
● Achieves a Class 0 fire rating to the Building Regulationsand Low Risk rating for the Technical Standards in Scotland.
● Achieves the best possible rating of < 5% smokeobscuration when tested to BS 5111: Part 1: 1974.
● CFC/HCFC–free with zero Ozone Depletion Potential (ODP).
The Kingspan Therma™ Range● With a thermal conductivity of 0.023–0.028 W/m.K
CFC/HCFC–free rigid urethane insulation is one of the mostthermally efficient insulation products commonly available.
● Easily achieves required U–values with minimum boardthickness.
● Achieves the required fire performance for the intendedapplication.
● CFC/HCFC–free with zero Ozone Depletion Potential (ODP).
The Kingspan Styrozone® & Purlcrete® Ranges● Rigid extruded polystyrene insulation (XPS) has the highest
compressive strength of any commonly available insulant.
● Ideal for specialist applications such as inverted roofing andheavy–duty flooring.
● Easily achieves required U–values with minimum boardthickness.
● Achieves the required fire performance for the intendedapplication.
● CFC/HCFC–free with zero Ozone Depletion Potential (ODP).
All Products● Their closed cell structure resists both moisture and water
vapour ingress – problems which can be associated withopen cell materials such as mineral fibre and which canresult in reduced thermal performance.
● Unaffected by air movement – problems that can beexperienced with mineral fibre and which can reducethermal performance.
● Safe and easy to install – non–fibrous.
● Provide reliable long term thermal performance over thelifetime of the building.
Kingspan Insulation LtdPembridge, Leominster, Herefordshire HR6 9LA, UK
Castleblayney, County Monaghan, Ireland
www.insulation.kingspan.com
® Kingspan, KoolDuct, Kooltherm, Nilflam, nilvent, Purlcrete, Thermataper the zo Device and the Lion Device are Registered Trademarks of the Kingspan Group plc™ Therma, Thermacricket and Thermaroof are Trademarks of the Kingspan Group plc
® SPeAR is a Registered Trademark of Arup
Customer ServiceFor quotations, order placement and details of despatches pleasecontact the Kingspan Insulation Customer Service Department onthe numbers below:
Literature & SamplesKingspan Insulation produces a comprehensive range of technicalliterature for specifiers, contractors, stockists and end users. The literature contains clear ‘user friendly’ advice on typical design; design considerations; thermal properties; sitework and product data.
Available as a complete Design Manual or as individual productbrochures, Kingspan Insulation technical literature is an essentialspecification tool. For copies please contact the KingspanInsulation Marketing Department on the numbers below:
Tapered RoofingFor technical guidance, quotations, order placement and details of despatches please contact the Kingspan InsulationTapered Roofing Department on the numbers below:
Technical Advice / DesignKingspan Insulation supports all of its products with a comprehensiveTechnical Advisory Service for specifiers, stockists and contractors.
This includes a computer–aided service designed to give fast,accurate technical advice. Simply phone the Kingspan InsulationTechnical Service Department with your project specification.Calculations can be carried out to provide U–values, condensation/ dew point risk, required insulation thicknesses etc… Thereafterany number of permutations can be provided to help you achieveyour desired targets.
The Kingspan Insulation Technical Service Department can alsogive general application advice and advice on design detailing andfixing etc... Site surveys are also undertaken as appropriate.
Please contact the Kingspan Insulation Technical ServiceDepartment on the numbers below:
Kingspan Insulation Ltd. reserves the right to amend product specifications without prior notice.Product thicknesses shown in this document should not be taken as being available ex–stockand reference should be made to the current Kingspan Insulation price–list or advice soughtfrom Kingspan Insulation’s Customer Service Department (see above left). The information,technical details and fixing instructions etc. included in this literature are given in good faith andapply to uses described. Recommendations for use should be verified as to the suitability andcompliance with actual requirements, specifications and any applicable laws and regulations.For other applications or conditions of use, Kingspan Insulation offers a Technical AdvisoryService (see above) the advice of which should be sought for uses of Kingspan Insulationproducts that are not specifically described herein. Please check that your copy of the literatureis current by contacting the Kingspan Insulation Marketing Department (see left).
Contact Details
Kingspan Insulation are members of the Mastic AsphaltCouncil (MAC)
Kingspan Insulation aremembers of the single–plyroofing association (SPRA)
