SECTION 09250

GYPSUM DRYWALL

I. PART I GENERAL

1.1 SECTION INCLUDES

A. This section covers furnishing all labor, materials, tools and equipment required to install all gypsum wallboard, metal corner beads, trims and expansion joints, drywall parches and repairs as we ll as herein speci fi ed and/or as required for a complete job.

B. Cold Weather Requirements: For the day before through the day afler the period of laminating and of finishing of wallboard joints, if outside temperatures will be less than 55'\ maintain the temperalUre within the building within the range of 55 \} to 70° F. Adequate venti lation shall also be provided to eliminate excessive moisture within the building during this same period.

C. Delivery of Materials: All materials, as specified, shall be delivered to the job in their original unopened containers or bundles, stored in a place providing protection from damage and exposure to the elements.

D. Subsurface: Examine and inspect material s to which gypsum board is to be applied. Remedy all defects prior to installation of drywall.

2. PART 2 PRODUCTS

2.1 MATERIALS

A. Trade names of the United States Gypsum Company have been used to establish the desired quality of materials specified herein. Products meeting these specifications wi ll be allowed as manufactured by Georgia~Pacific, Gold Bond Building Products Division, National Gypsum Co., or Owner approved equa l.

B. Gypsum wallboard shall conform to ASTM C36 "Specification for Gypsum Wallboard" with ASTM C-630 Specification added for Water Resistant Wallboard "WfR".

C. Gypsum Wallboard at Walls: Shall be 5/8" Sheetrock SW, located as specified herein.

D. Gypsum Wallboard at Wet Areas (Restroom and Kitchen): Shall be 5/8" Sheetrock WfR, located as specified herein.

E. Corner Beads and Metal Trim: Shall be Dur~A~Bead 101 or 200A. Corner reinforcement for adhes ive atLachment shall be Perf-A~Bead Reinforcement.

F. loint Treatment Material: USG "Durabond 90" loint Compound and USG Ready Mixed Joint Compound All Purpose.

G. Special Note: The Sheetrock SW System (Board and l oi nt Treatment) was tested and designed to function as a unit. Substitution for one and not all of the procedures and/or products in this specification is not recommended.

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3. PART 3 EXECUTION

3. 1 APPLICATION

A. The installation and application of a ll usa materials shall be in accordance with the latest printed di rections or speci fi cations of Uni ted States Gypsum and as follows:

B. Gypsum Wallboard: All ends and edges of Sheetrock Gypsum Wallboard shall occur over fastening members, except when joints arc at right angles to fram ing members as in horizontal app lication. Ceiling wallboard shall be attached to framing supports utilizing both glue and screw fasten ing.

C. Sheetrock Gypsu m Wallboard shall be applied to minimi ze end joints. Boards shall be brought into contact, but shall not be fo rced into place. Where ends or edges abut, they shall be neat ly fitted. End joints sha ll be staggered. Joints on opposite sides of a partition shall be so arranged as lO occur on different studs.

D. Wallboard shall be attached to framing supports with screws; no nailing wi ll be permitted. Fasteners shall provide a slight depression below the surface of the wallboard without

breaking the face paper and fasteners shall not be driven closer than 3/8" from edges and ends of the board. While the fasteners are being driven, the wallboard shall be held ill firm contact with the underlying support. Altachment should proceed from the center of the wallboard towards ends and edges.

E. When necessary to cut ends and edges, scribe, or make cutouts within the fie ld of the wallboard, it shall be done in a workman like manner.

F. Metal corner beads shall be securely attached as per manufacturer's recommendations, to all external corners and in single lengths. Clinch and nail corner beads securely.

G. Metal trim shall be installed where drywall abuts ex posed dissimilar wa ll materia l in the manner recommended by the manufacturer.

3.2 JOINT TREATMENT

A. Unless otherwise indicated, all wa lls, parLitions and ceilings are included. Joints of ex terior gypsum wallboard. where not exposed to view, shall not be treated, but shall be installed butted tight ly.

B. Mixing - Durabond "90" joint compound shall be mixed according to the directions on the bag. Caution shall be used to prevent excessive mixing and usc of extremely cold water and compound.

C. All V-grooves formed by abutting wrapped eased edges of Sheetrock SW shall be pre­filled with Durabond "90" joint compound. Application shall be with a Oexib le 5" or 6" joint fini shing knife or an Ames Pre-Fi ll too l. The V shall be fill ed nush with the plane of the taper depression and any excess compound beyond the groove shall be wiped clean, leaving a clear depress ion to receive tape . The pre-fill shall have hardened prior to the next app lication.

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D. Taping or embedding - USG Ready Mixed Joint Compound - All Purpose, shall be applied with a suitable lOol in a thin uniform layer to all joims and angles to be reinforced. Pcrf-A-Tape reinforcement shall be applied immediately and centered over the joint and seated into the compound. Sufficient compound must remain under the tape to provide proper bond. A skim coal shall immediately follow tape embedment but not lO function as a fill or a second coat.

E. Tape shall be properl y fo lded and embedded in all angles to provide a true angle.

F. The tape or embedding coat must be tho rough ly dry prior 10 appl ication of the fi ll COal.

G. Filling - USG Ready Mixed Compound - All-Purpose, shall be applied over the embedding coat, filling the board taper nush with the surface. On joints with no taper, the fill coaL sha ll cover the tape and feat her out at least 4" on ei ther side of the tape. No fiJI coat is necessary at interior angles.

H. The fill coat shall be thoroughly dry prior to app lication of the fin ish coat.

I. Finishing - USG Ready Mixed Joint Compound - All Purpose, shall be spread evenly over and ex tended slightly beyond the fill coat on all joints and feathered to a smooth uniform finish. On tapered joints, the finish coat shall not protrude beyond the plane of the surface.

J. All taped angles shall rece ive a finish coat to cover the tape and taping compound, providing a true angle. Where necessary, sanding shall occur between coats and foll owing the final application of compound to provide a smooth surface ready for decoration.

K. Filling and finishing of fastener depressions - A taping or all -purpose compound must be applied as the first coat to all fastener depressions. This sha ll be fo llowed by a minimum of 2 additiona l coats of a ll-purpose compound, leaving all depressions level with the plane o f the surface.

3.3 COMPLETION

A. COnlraclor shall correct ill! poorly installed drywall including, but not limited 10, poor seams, "nail pops", poorly executed patches, etc. Final gypsum board condition sha ll be like new and ready to receive paint.

ELEMENTARY SCHOOL BATHROOM RENOVATION OWOSSO PUBLIC SCHOOLS

END OF SECTION

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SECTION 09300

EPOXY RESIN TERRAZZO

I. PART I GENERAL

1.1 SUMMARY

A. 3/8" Nominal Epoxy Resin Matrix Terrazzo

B. Work inc luded in this Section: 1. 3/8" Epoxy Resin Terrazzo poured in place with joint, edge, and termination

divider strips as indicated on drawings. 2. Crack suppression membrane with reinforcing mesh. 3. Moisture Vapor Transmission Barrier Placed on Concrete Slab.

C. Related work in other Sections: I. Cast in Place Concrete: Sublloor to be level with maximum variation of lA" in

10 feet , with a steel trowel finish surface. Concrete slab shall have effective moisture/vapor barrier placed beneath slab, free of damage causing tears or perforations.

2. Adjacent fl oor fini shes - See Division 9. 3. Furnish and placement of noar drains, plumbing fixtures, electrical fixtures. 4. Joint sealants installed with terrazzo at ex pansion joints. 5 . Sufficient water, temporary heal and light, and adequate electric power

connected with outlets within 100 feet of work area.

1.2 QUALITY ASSURANCE

A. Acceptable Suppliers: I. Suppliers shall be Associate members of the Western States Terrazzo

Association (WSTA) and National Terrazzo & Mosaic Association (NTMA). 2. Marble chips and/or glass aggregates shall be standard colors and gradated sizes

as supplied by WSTA Associate supplier members.

B. Acceptable Installers: I. Terrazzo installation CO nlracLQr shall be current Contractor members of the

NTMA and WSTA, and shall perform all work in accordance with NTMA and WSTA specifications and standards, (See http://weslern statesterrazzo.com!contact.htll1 for COnlractor Member information.)

1.3 SUBMITTALS

A. Product Data: I . Submit product data for all related materials including resin matri x, crack

suppression membrane, d ivide r strips, expansion strips, sealers and cleaners.

B. Samples: I. Submit (3) 6" square samples for each color and type of terrazzo speCified or

se lected. 2. Submit (3) 6" lengths of each d ivider of expansion st rip required.

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c. Certification: I. Submit certification letter from WSTA that terrazzo installation conlraCLOr is

currenl member in good standing wi th WSTA and NTMA.

1.4 DELIVERY, STORAGE AND HANDLING

A. Delivery of Materials: I. Deliver materials in a manner LO prevent damage or contamination to containers

or bags of materials.

B. Storage of Materials: I. Store materials in a clean, dry location, heated to minimum 50 degrees,

furnis hed by o thers.

1.5 GUARANTEEIW ARRANTY

A. Terrazzo materials and installation shall be guaranteed for a period of (I) year fro m date of substantial completion. Guarantee shall be limited to the repai r and/o r rep lacement of materials or workmanship found to be defecti ve per NTMA and WSTA standards and specifications.

1.6 PROJECT CONDITI ONS

A. Acceptable Subst rates: I. Concrete sub-noor level tolerance shall be 1/4" in 10 feet. Any irregularity of

the surface, which requires repair shall be performed with epoxy fill ers and aggregates recom mended by epoxy resin matrix manufacturcr.

2. Maintain ambicnt room and floor temperature at 50 degrees F or above for a period extending 72 hours before, during, and after terrazzo noor installat ion.

3. Concrete substrate shall be tes ted to ve rify acceptable moisture levels prior to installation. Testing should be conducted in accordance with ASTM F2l70 or by calcium chloride test. Acceptable moi sture leve ls shall be as estab li shed by NTMA for use with resin matrix terrazzo.

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2. PART 2 PRODUCTS

2. I MATERIALS

A. Primer: Resin manufacturer's 100% solids epoxy primer.

B. Flexible Membrane: Resin manufacturer's 100% Solids Epoxy Crack Suppression Membrane.

C. Epoxy Resin: Epoxy Matrix, 100% solids, -0- VOC Epoxy Resin. Acceptable manufacturers are General Polymers. Crossfield Products, T&M Terroxy Resin Systems, Key Resi n West.

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D. Marble Chips: Standard color marble or glass chips as distributed by WSTA Associate member suppliers. Maximum size #2 per NTMA gradation standards.

E. Di vider Strips: Zinc, Brass, Or Aluminum, 1/8" in thickness unless noted otherwise on drawings, as supplied by Manhattan American, TESCO Products, or their authori zed distributors.

F. Terrazzo Cleaner: PH Factor be t ween 7 and 10, biodegradable and phosphate free as reco mmended by resin system man ufacturer.

G. Sealer: Penetrat ing Sealer TESCO Crystalsea!.

H. Moi sture Transmi ss ion Barrier shall be supplied or recommended by epoxy res in manufaclUrer.

2.2 MIXES

A. Terrazzo Selection: I . Key Epoxy Terrazzo # 109 fast setting, 100% solids epoxy terrazzo bi nder used

to patch or repair epoxy terrazzo floor surfaces. 2. 100% Solids Epoxy Resin with Aliphatic Amines.

B. Proportions:

c.

I. In accordance with resin system manufacturer's recommendations.

Mix ing: I. Ten·azzo Topping: Mix marb le/aggregates and Epoxy Resin per formulat ions of

approved samples.

3. PART 3 EXECUTION

3.1 INSPECTION

A. Examine areas to receive terrazzo for: I. Defects in existing work that affect proper execution of terrazzo work. Notify

contractor of any defects in concrete sub-floor or other related work for correction.

3.2 INSTALLATION

A. Surface Preparation: 1. Surface preparation is the most critical portion of any successful epoxy terrazzo

fl ooring system application. All substrates must be properly prepared as out lined in KEY RESIN COMPANY· S TECHNICAL BULLETIN # 1. Work must be performed by trained or experienced terrazzo contractors. The KEY RESIN COMPANY technical services department is available to answer any questions.

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B. Mixing and Installation: 1. KEY RESlN #109 is available in two uni t sizes: 1.17 gallons, 5.85 ga llons.

Mix only complctc units by combining Part A and Part B for three minutes at a low speed in a barrel mixer or KOL style bucket mixer. Slowly add Key Epoxy Terrazzo Filler into the Mixed KEY RESIN #109 while mi xing in the barrel or bucket mixer until filler is completely wet. Continue mixing and add req uired marble or glass chips (a lso granite, mother of pearl , etc) . For 1.17 ga llon unit, add 4 Ibs. filler and 30 Ibs. chips. Chips should be dust free and dry. Continue mixing blend chips and terrazzo fo r 3-4 minutes or lIntil a lump free, even mix is obtained. Place and finish material within 15-20 minutes at 75°F. For complete installation instructions, contact your Key Representativc or Key Resin Company's Technical Service Department.

TECHNICAL DATA

Mixing Ratio 6 Parts A to I Part B bv Volume Solids Content 100%, bv Volume Volatile OrQanic Content (VOC) -0-Wei.ht ner oallon 8.5-9.0 Dounds Der oa llon mi xed

CUREIDRY TIME

Pot Life 15-20 minutes @ 75° Grinding Time 2 hours @ 75 ° Polishing Time, Arter Grouting 3-4 hours @ 75 ' Full Cure & Maximum Resistance 5 days

C. Cleanup: I. Clean ski n with soap and water. Tools and equipment should be c leancd with

cxylene or lacquer thinner before KEY #109 gels.

D. Maintenance: 1. Key Epoxy Terrazzo #109 is easily cleaned with neutral soaps or detergents.

Key Resin Company recommends the owner consult with the National Terrazzo & Mosaic Associat ion (www.ntma.com) guidelines for maintaining terrazzo surfaces.

END OF SECTION

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SECTION 09900

PAINTING

1. PART 1 GENERAL

1.1 SECTION INCLUDES

A. The Contractor shall furnish all materials, tools, labor, scaffo lding and other appliances to properly execute and complete the field painting and finishing work in accordance as herein specified.

B. At surfaces called to be painted, exposed piping, conduits, "j" boxes and back boxes will be painted the same color unless they are pre-finished.

C. Base coat, including priming coat, shall be in color as directed by the Owner. Each successive coat shall be in color as se lected by the Owner, al l building toward the proper base co lor to receive final coal in color as selected.

D. Carefully reference specifications for painting requirements at all construction areas.

E. Submiltals: Before beginning the painting work and after receipt of the color schedule, the Cont ractor shall prepare and submit 10 the Owner for approval, 4" x 12" sample co lor panels, showing all the types of fini sh specified, including all trim and wall work . Furnish samples all pressed wood or other rigid material. Pack samples carefu lly and deliver dry, hard and in good condition. The samples shall be remade until approved. When approved, the Contractor shall furni sh to the Owner, for the Owner, a complete paint schedu le showing brand names, colors, mixtures and methods of application (brush, roller or spray) for each area that is to be fini shed.

F. The Owner will select all colors and will prepare a schedu le of color and finish required for vari ous areas throughout the job, unless colors are specifica ll y noted herein .

G. Deli ve ry of Materials: All required materials shall be delivered in unbroken packages bearing the brand name of the manufacturer and shall be subjected to inspection and approval. Materials should be ordered sufficiently in advance to be on the job when needed and shall be deli vered to the building in sufficient quantities so that work will not be delayed. No claim by this Contrac tor concerning unsuitability of any material specified or his inability to produce first-class work with the same wi ll be entertained unless such claim is made, in writing, to the Owner before the contract is signed.

H. Weather Requirements: Do not apply exterior paint in damp, rainy weather or when temperature is below 50° F. Do not app ly varnish or inte rior fini sh pai nting when temperature is below 60° F. Do not app ly varnish in any place that is not c losed and protected from draft and dust.

I. Work Not Included: Prime coats speci fied herein will no t be required on items delivered with prime or lOp coats already applied.

1. Field painting will not be required on items specified to be completely finished at factory or on aluminum, copper, brass, bronze and other non-ferrous metal unless specifica ll y designated. The Contractor shall touch-up all damaged spots on factory finished items after erection and installation.

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2. PART 2 PRODUCTS

2.1 MATERIALS

A. Paint shall be manufactured by Piusburgh Paints, PPG Architec tural Finishes, Inc. o r Owner approved equal. Products meeting these specifications as manufactured by others may be submitted to the Owner for approval. No paint containing lead will be allowed . All paint colors shall be selec ted by the Owner from manufacturer's standard choices.

B. The kinds and number of coats required on the various surfaces shall be as fo llows: 1. Interior Walls, Ceilings, Shelves Exposed Wood and Trim:

a. First Coat ~ Wallcare 2-2 Latex primer Sealer b. Final Coat - Acrylic Latex Semi-Gloss Enamel. c. Stee l corner beading is (Q be coated with Alkyed primer #6-2 12 before

applying water-thinned coatings. d. Refer to Specification Section 09250 GYPSUM DRYWALL for

surface texturing prio r to painting. 2. Interior Exposed Ferrous Metal:

a. First Coat - Alkyd Metal Primer. b. Second CoaL - Latex Semi-Gloss.

3. Interior Prefini shed (pri mer) Metal Surfaces (Door Frames): a. First Coal - Facto ry applied primer. b. Second Coal - Interior House and trim Semi -gloss latex.

4. Concrete/Masonry: a. First Coat Block Filler: S-W Heavy Duty Block Filler. b. Semi-Gloss : T wo COals of Latex Ename l: S-W Promar 200 Latex S-O.

5. Glazed T ile Walls: a. First Coat Block Filler: S-W Heavy Duty Block Filler. b. Epoxy: Tow Coats of Epoxy: S-W Tile Clad High Solids Epoxy.

3. PART 3 EXECUTION

3 .1 APPLICATION

A. Pre liminary Work: Surfaces shall be prepared for painting as recommended by the manufac turer.

B. Priming and Back Priming: Prime and back prime all surfaces of woodwork indicated in thi s section to be painted. Also, seal all unexposed faces of all millwork indicated, scheduled or specified to be stained, varnished, lacquered o r otherwise fini shed on exposed faces.

C. Parts inaccessible after assembly shall be primed or back primed before assembly. Do all priming and back priming with approved primers. Priming colors shall be as directed by the Owner.

D. Lightly sand wood prior to applying stain and sand between coats.

3.2 WORKMANSHIP

A. Surfaces to be stained or painted shall be clean, dry, smooth and adequately protected from dampness. Each coat of paint shall be applied , worked out evenly and allowed to dry befo re subsequent coat is applied.

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B. Finished work shall be uniform, of approved color, smooth and free From runs, sags, defective brushing, rolling or spraying. Make edges of paint adjoining other materials or colors sharp and clean, without overlapping.

C. At completion, touch-up and restore fini sh where damaged and leave in good condi tion.

D. Contrac tor shall be responsible for correct ing any marring, spoIling and/or staining of fini shed noors, or other work, and shall either entirely remove said stains, etc., or replace damaged materia ls with approved materials, and make good any damage to other work in connection with said removal and replacement without extra cost to the Owner.

E. Where necessary for Contractor to remove temporary coveri ngs from any part of work in order to execute painting and/or fini shing, he shall do so and also replace same in proper manner. In case said coveri ngs cannot be replaced, protect work by other approved means.

F. At conc lusion of work and when directed, go over all painting, staining and fini shing throughout entire job. Clean all paint spots off glass, mirrors, metal , wood and other mate ri als, and/or equipment. Where necessary and as directed, paint over all so iled, stained and dark spots, finger marks, etc. , so that none show through finished work. Retouching shall exactly match surrounding surface and if necessary, refinish ent ire surface in order to allain said result

ELEMENTARY SCHOOL BATHROOM RENOVATION OWOSSO PUBLIC SC HOOLS

END OF SECTION

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