PERFORATIONSIntelligent sound control

HOW TO CHOOSE THE RIGHT PERFORATION?Metal ceilings combine smart soundproofing with an attractive indoor environment. Armstrong Metal Perforations offer a wide range of design options and effective acoustic comfort.

STANDARD PERFORATION PATTERNS

It’s important to optimise a room’s reverberation time, according to how it is used – the reverberation depends on the available space and total absorption.

SOUND ABSORPTION

One of the key functions of a metal ceiling is to create a pleasant atmosphere enhanced by intelligent noise abatement. Armstrong perforations offer a vast spectrum of aesthetic solutions for effective acoustic comfort. Depending on the intended purpose of a room, reverberation times will need to be optimised as well. This parameter depends on the total absorption capacity of the room. Airborne sound absorption is based on the conversion of sound energy into heat by friction processes which take place in absorbing materials and systems.

PERFORATION AND LIGHT REFLECTANCE

Light reflectance [%] Comparitive measurements with coated white RAL 9010 ceiling tiles, including black acoustic fleece on rear side.

Measured in accordance with EN ISO 7742-2 & EN ISO 7742-3

The brighter the ceiling surface, the better the light reflectance. Thus a surface with fewer perforations has a higher light reflectance.

For example, the Ultra Microperforation Rg 0501, with just a 0.64% perforation level, reflects significantly more light than other variants.

ARMSTRONG PERFORATION DESCRIPTION

The following product prefixes describe the shape and arrangement of perforations:

Rd = Round perforations, 45° diagonal pitch Rg = Round perforations, 90° straight pitch Rv = Round perforations, various angles pitches Qg = Square perforations, 90° straight pitch Qd = Square perforations, 45° diagonal pitch Tv = Diamond perforations, various angles pitches Lg = Slotted perforations, 90° straight pitch Lv = Slotted perforations, various angles pitches

The numbers define the perforation size and free area. The first two, and occasionally three, numbers denote the hole diameter in tenths of millimetres and the last two digits the proportion of free cross-sectional area.

Example: Rg 2516

• Round perforation, 90° straight pitch

• Hole diameter: 2.5 mm

• Free area: 16%

100

90

80

70

60

50Unperforated

(plain) free area: 0%

Rg 0501Ultra

Microperforationfree area: 0.64%

Rg 0701Extra

Microperforationfree area: 1.5%

Rg 2516Standard

Perforationfree area: 16%

Rd 1522Micro Perforation

free area: 22%

85% 84% 80%

65% 70%

MANUFACTURING ACCREDITATION

In our manufacturing operations, not only do we continue to take care in the selection of raw materials and energy, reduce waste and embrace effective recycling methods, but we also ensure that our products conform to safety, environmental and quality standards.

Our European manufacturing plants are certified to: ISO 9001:2008 ISO 14001:2004 OHSAS 18001:2007

MEMBERSHIPS AND ASSOCIATIONS

Armstrong is a member of TAIM (Technical Association of Industrial Metal Ceilings). TAIM was founded in 1988 and its primary objective is to promote quality and to set minimum quality standards and requirements for metal ceilings systems.

3

Ultra Microperforation - Rg 0501 Extra Microperforation - Rg 0701

Hole diameter: 1.5 mm

Free area: 22 %

Hole diameter: 0.5 mm

Free area: 0.64%

Hole diameter: 0.7 mm

Free area: 1.5 %

Armstrong metal ceilings with the revolutionary Ultra Microperforation have set new standards. No additional acoustic infills are needed to absorb sound waves; the Armstrong metal ceiling achieves the necessary sound absorption using near-invisible 0.5mm perforations.

Micro Perforation - Rd 1522 Standard Perforation - Rg 2516

Hole diameter: 2.5 mm

Free area: 16 %

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

• Ultra Microperforated no infill

• Microperforated with fleece

• Microperforated with B15

• Microperforated with OP19

• Extra Microperforated with fleece

• Extra Microperforated with B15

• Extra Microperforated with OP19

• Standard Perforated with fleece

• Standard Perforated with B15

• Standard Perforated with 0P19

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0125 250 500 1000 2000 4000Hz

aW NRC 125 250 500 1000 2000 4000 Hz Abs Class Cert N° Dncw Cert N° Rw Cert N° Ultra Microperforated - no infill • 0.40(LM) 0.55 0.35 0.65 0.65 0.40 0.35 0.25 aP D 2252 18 dB 3844-98-1 - -

Extra Microperforated with fleece • 0.55(L) 0.65 0.40 0.80 0.70 0.55 0.55 0.45 aP D 2253 30 dB 2432 - - Extra Microperforated with B15 • 0.65 0.60 0.30 0.45 0.50 0.70 0.75 0.75 aP C 2334 40 dB 2427 - - Extra Microperforated with OP19 • 0.70 0.75 0.50 0.70 0.80 0.75 0.70 0.50 aP C 6714a 31 dB 6720a 15 dB 6725a Microperforated with fleece • 0.75 0.80 0.30 0.80 0.95 0.65 0.75 0.80 aP C 2175 20 dB 2437 6 dB 5939 Microperforated with B15 • 0.60(H) 0.60 0.35 0.40 0.50 0.65 0.75 0.90 aP C 2337 41 dB 2443 18 dB 5941 Microperforated with OP19 • 1.00 0.90 0.50 0.80 0.95 0.95 1.00 1.00 aP A 6713a 27 dB 6719a 12 dB 6724a Standard Perforated with fleece • 0.75 0.75 0.35 0.80 0.65 0.70 0.75 0.70 aP C 141401 20 dB 2437* 6 dB 5939* Standard Perforated with B15 • 0.60(H) 0.60 0.35 0.40 0.50 0.65 0.75 0.90 aP C 2340 41 dB 2443* 18 dB 5941* Standard Perforated with 0P19 • 0.95 0.90 0.50 0.80 0.95 0.90 1.00 0.95 aP A 6715a 28 dB 6721a 13 dB 6726a

Sound absorption

Sound attenuation

Sound reduction

* Highlighted Dncw and Rw performances for the Standard Perforation (16% open area) are estimated as being not less than the tested Microperforated (22% open area) performance.All Armstrong acoustic testing is conducted at independent third party accredited laboratories.

STANDARD PERFORATIONS

Armstrong has a wide range of standard perforation products, with special variants also available. Since the maximum continuity and perforation can vary according to the tool, not all perforations are available in all widths. For further details, please contact us.

4 5

SEMI STANDARD PERFORATIONS

Rd 1506Hole diameter: 1.5 mmFree area: 6 %

Rd 1622Hole diameter: 1.6 mmFree area: 22 %

Rd 1511Hole diameter: 1.5 mmFree area: 11 %

Rd 1810Hole diameter: 1.8 mmFree area: 10 %

Rd 1820Hole diameter: 1.8 mmFree area: 20 %

Rd 2228Hole diameter: 2.2 mmFree area: 28 %

Rd 2508Hole diameter: 2.5 mmFree area: 8 %

Rd 2535Hole diameter: 2.5 mmFree area: 35 %

Rd 3013Hole diameter: 3.0 mmFree area: 13 %

Rd 3019Hole diameter: 3.0 mmFree area: 19 %

4.3

4.3

Ø1.6

Rd 3025Hole diameter: 3.0 mFree area: 25 %

Rd 3139Hole diameter: 3.1 mmFree area: 39 %

Rd 4006Hole diameter: 4.0 mmFree area: 6 %

Rd 4011Hole diameter: 4.0 mmFree area: 11 %

Rd 4015Hole diameter: 4.0 mmFree area: 15 %

Rd 4045Hole diameter: 4.0 mmFree area: 45 %

Rg 1511Hole diameter: 1.5 mmFree area: 11 %

Rg 1821Hole diameter: 1.8 mmFree area: 21 %

Rd - Round perforations, 45° diagonal pitch

Rg - Round perforations, 90° straight pitch

6 7

SEMI STANDARD PERFORATIONS

Rg - Round perforations, 90° straight pitch Rv - Round perforations, various angles pitches

Rg 3013Hole diameter: 3.0 mmFree area: 13 %

Rg 4007Hole diameter: 4.0 mmFree area: 7 %

Rg 4022Hole diameter: 4.0 mmFree area: 22 %

Rg 4030Hole diameter: 4.0 mmFree area: 30 %

Rg 14023Hole diameter: 14 mmFree area: 23 %

Rg 25020*Hole diameter: 25 mmFree area: 20 %

Rv 1517Hole diameter: 1.5 mmFree area: 17 %

Rv 2523Hole diameter: 2.5 mmFree area: 23 %

Rv 2532Hole diameter: 2.5 mmFree area: 32 %

Rv 2919Hole diameter: 2.9 mmFree area: 19 %

Rv 4058Hole diameter: 4.0 mmFree area: 58 %

Rv 4625Hole diameter: 4.6 mmFree area: 25 %

Rv 5036Hole diameter: 5.0 mmFree area: 36 %

Rg 3027Hole diameter: 3.0 mmFree area: 27 %

Rg 3529Hole diameter: 3.5 mmFree area: 29 %

50

50Ø25

Rg 2504Hole diameter: 2.5 mmFree area: 4 %

8 9

SEMI STANDARD PERFORATIONS

Qg - Square perforations, 90° straight pitch Qg - Square perforations, 90° straight pitch / Qd - Square perforations, 45° diagonal pitch

Tv - Diamond perforations, various angles pitches

Qg 10059Hole diameter: 10 x 10 mmFree area: 59 %

Qg 10565Hole diameter: 10.5 x 10.5 mmFree area: 65 %

Qg 12515Hole diameter: 12.5 x 12.5mmFree area: 15 %

Qg 20018Hole diameter: 20 x 20 mmFree area: 18 %

Qd 20034Hole diameter: 20 x 20 mmFree area: 34 %

Qg 8043Hole diameter: 8 x 8 mmFree area: 43 %

Qg 10015Hole diameter: 10 x 10 mmFree area: 15 %

Qg 3056Hole diameter: 3 x 3 mmFree area: 56 %

Tv 26845Hole diameter: 26.8 x 9 mmFree area: 45 %

Qg 4025Hole diameter: 4 x 4 mmFree area: 25 %

4 8 12.2

13.04

47

20.45

3 26.8

14.7

27.3

69

t = min. 25

32

47 47

23.5

13.0

4

13

13

26.0826

.08

4

8 12.2

10 11

SEMI STANDARD PERFORATIONS

Lg - Slotted perforations, square pitch

Lv - Slotted perforations, various angles pitches

Lg 16032Hole diameter: 16 x 2 mmFree area: 32 %

Lg 25042Hole diameter: 25 x 3 mmFree area: 42 %

Lg 42003Hole diameter: 42 x 2 mmFree area: 3 %

Lv 27045Hole diameter: 3.18 x 26.99 mmFree area: 45 %

42

37

a

2

20 16

2

5

25a

53

26.99

33.34

5.56 3.18

SonoPerf D®Hole diameter: 3 x 0.3 mmFree area: 10 %

6.2

0.3 3

3

Perforation description

Max. perforation width (mm)

Max. opening width (mm)

Material thickness (mm)

Steel AluminiumRd 1511 1,258 1,280 0.5 - 0.7 0.6 - 0.8

Rd 15221,595.5 1,600 0.5 - 0.7 0.6 - 0.81,551.5 1,600 1.0 - 1.25 1.0 - 1.25

Rd 1622 820 830 0.5 - 0.7 --Rd 1506 1,595.5 1,600 0.5 - 0.7 0.6 - 0.8Rd 1810 815 820 0.5 - 0.7 0.6 -0.8Rd 1820 675 750 0.5 - 0.6 --Rd 2228 1,497.2 1,600 0.5 - 1.0 0.6 -1.0Rd 2508 1,509.5 1,600 0.5 - 1.0 0.6 -1.2Rd 2535 1,274.5 1,280 0.5 - 0.7 0.6 -0.8Rd 3013 621 745 0.5 - 1.0 0.6 -1.0Rd 3019 708 770 0.5 - 0.9 0.6 -1.0Rd 3025 708 770 0.5 - 0.9 0.6 -1.0Rd 3139 901.41 950 0.5 - 0.7 0.6 -0.8Rd 4006 704 770 0.5 - 0.9 0.6 -1.0Rd 4011 611.5 745 0.5 - 1.0 0.6 -1.0Rd 4015 702 735 0.5 - 0.6 --Rd 4045 815 820 0.5 - 0.6 --Rg 0501 625.5 745 0.5 --Rg 0701 1,500 1,600 0.5 - 0.7 0.6 - 0.7

Rg 15111,593.5 1,600 0.5 - 0.7 0.6 - 0.81,549.5 1,600 1.0 - 1.25 1.0 - 1.25

Rg 1821 815 820 0.5 - 0.7 0.6 -0.8Rg 2516 1,509.5 1,600 0.5 - 1.0 0.6 -1.2Rg 2504 1,498.5 1,600 0.5 - 1.0 0.6 -1.2

Rg 3013708 770 0.5 - 0.9 0.6 -1.0615 745 0.5 - 1.0 0.6 -1.0

Rg 3027 616.5 745 0.5 - 1.0 0.6 -1.0Rg 3529 1,575.3 1,600 0.5 - 1.0 0.6 -2.0Rg 4022 611.5 745 0.5 - 1.0 0.6 -1.0Rg 4030 702 735 0.5 - 0.6 --Rg 4007 702 735 0.5 - 0.6 --Rg 14023 638 745 0.5 - 1.0 0.6 -1.0Rg 25020 575 745 0.5 - 1.0 --

Rv 1517 1,510.25 1,600 0.5 - 0.75 --Rv 2523 1,252.5 1,280 0.5 - 0.9 0.6 -1.0Rv 2532 1,590 1,600 0.5 - 0.75 0.6 -1.2Rv 2919 686 740 0.5 - 0.6 --Rv 4058 775 1,010 0.6 - 0.8 --Rv 4625 949.6 1,080 0.5 - 0.7 0.6 -1.0Rv 5036 483 535 0.5 - 0.6 --Qg 3056 699 1,280 0.5 - 0.7 --Qg 4025 708 770 0.5 - 0.7 0.6 -0.8Qg 8043 642.4 745 0.5 - 1.0 0.6 -1.0

Qg 10059647 745 0.5 - 0.8 --713 745 0.5 - 0.6 --

Qg 10015 713 745 0.5 - 0.6 --Qg 10565 647 745 0.5 - 0.8 --Qg 12515 1,004.5 1,280 0.5 - 0.7 0.6 -0.8Qg 20018 631 745 0.5 - 0.8 0.6 -0.8Qd 20034 631 745 0.5 - 0.8 0.6 -0.8Lg 16032 775 790 0.5 - 0.6 --Lg 25042 619 745 0.5 - 0.8 0.6 -0.8Lg 42003 1,001 1,100 0.5 - 0.8 0.6 -0.8

SonoPerf D® 950 950 0.6 - 0.7 --Lv 27045 850.5 855 0.5 - 0.7 --Tv 26845 803.7 1,010 0.6 - 0.7 --

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[2020-05]

WWW.KNAUFARMSTRONG.COM

Advisory noteAll photographic and design elements supplied in this brochure do not necessarily reflect any recommendation by any of the companies named in this brochure as to the proper use or recommended methods of installation of suspended ceilings and are supplied only as informative material. For technical reasons in printing, differences may appear between colours printed in this brochure and the actual product. The choice of colours should always be made from a sample of the product. All statements and technical information contained in this brochure, or any publication of the companies named in this brochure, relating to Armstrong ceilings are based on results obtained under laboratory test conditions. It is the responsability of the user to verify with the seller of the products in writing that such statements and information are appropriate to the specific use intended. Sales of the products and liability of the selling companies are in accordance with the terms and conditions of sale of the selling company. All product specifications are subject to modifications without prior notice.

NORTH EUROPE

SOUTH EUROPE

RUSSIA & CIS

MIDDLE EAST & AFRICA

Armstrong World Industries JLT Office 2003, 20th Floor Goldcrest Executive Tower Jumeirah Lake Towers, Cluster C Dubai United Arab Emirates

Tel.: +971 4 453 4545 Fax: +971 4 453 4546

LLC "Armstrong World Industries" Mosfilmovskaya Street 38A Moscow 119285 Russian Federation

Tel.: +41 (0) 71 313 63 63 Fax: +41 (0) 71 313 64 00

BENELUX

Armstrong Building Products B.V. Bjister 37 4817 HZ Breda Netherlands

Tel.: +31 (0) 76 523 02 00 (NL) Tel.: +32 (0) 2 223 00 72 (BE) Fax: +31 (0) 76 521 04 07

POLAND & SCANDINAVIA PL/DK/FI/IS/NO/SE

Armstrong Building Products B.V. Sp. z o.o. Oddział w Polsce ul. Domaniewska 37 02-672 Warszawa Poland

Tel.: +48 (0) 22 337 86 10 / 86 11 Fax: +48 (0) 22 337 86 12

SWITZERLAND

Armstrong Metalldecken AG Breitfeldstrasse 8 9015 St. Gallen Switzerland

Tel.: +41 (0) 71 313 63 63 Fax: +41 (0) 71 313 64 00

Armstrong Metalldecken AG Büro / Lager Zentralschweiz Grossweid 9 6026 Rain Switzerland

Tel.: +41 (0) 41 921 63 63 Fax: +41 (0) 41 921 63 80

Armstrong Plafonds Métalliques SA Bureau et Dépôt Suisse Romande Avenue de Châtelaine 87 1219 Châtelaine Suisse

Tel.: +41 (0) 22 731 60 70 Fax: +41 (0) 22 731 60 74

FRANCE

Armstrong Building Products SAS Bureaux Commerciaux Immeuble Paryseine 3 allée de la Seine 94854 Ivry-sur-Seine France

Tel.: +33 (0) 800 41 36 43 Fax: +33 (0) 1 45 21 04 11

Siège Social 67 rue de Salins – CS 20089 25302 Pontarlier Cedex France

CENTRAL EUROPE SOUTH AL/BA/BG/CZ/HR/HU/KO MD/ME/MK/RO/RS/SK/SI

Armstrong Building Products Florentinum Na Florenci 2116/15 110 00 Praha 1 Czech Republic

Tel.: +420 725 477 588 (CZ) +36 (30) 455 66 55 (HU) +40 721 202 637 (RS) +386 (0) 41 434 341 (SI) +40 729 882 999 (RO)