NOTE ** This section is based on the products of the Homasote Company, which is located at:
NOTE ** P.O. Box 7240
NOTE ** West Trenton, NJ 08628-0240
NOTE ** Tel: (609) 883-3300
NOTE ** Fax: (609) 530-1584
NOTE ** Internet address: http://www.homasote.com
NOTE ** For local rep contact: Sweet's Buyline 1-800-892-1165 (#0878)
NOTE ** The Homasote Company manufactures various products for the building industry. This section covers only a part of their product line: "Nova" cork-faced acoustical wall panels. Nova cork paneling is a completely finished structural panel requiring no on-site surface treatment. Panels in 4 by 8 sizes are fire rated Class B and are available Class A. Cut to size panels are Class B fire rated.
NOTE **
NOTE ** See their other sections for wood roof decking, fiberboard underlayment, acoustical barriers (fire-rated and non-rated), and fabric-covered acoustical wall panels.
NOTE **
NOTE ** SECTION 09843 - CORK-FACED ACOUSTICAL WALL PANELS, Copyright 1998, The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Select paragraphs below applicable to project.
A. Class A cork-faced acoustical wall panels manufactured from recycled wood fiber material.
B. Class B cork-faced acoustical wall panels manufactured from recycled wood fiber material.
1.2 RELATED SECTIONS
NOTE ** Delete sections below not relevant to this project; add others as required.
A. Section 06100 - Rough Carpentry.
B. Section 09110 - Non-Load-Bearing Wall Framing.
C. Section 09250 - Gypsum Board.
D. Section _____ - _________________________.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not actually required by the text of the edited section; add others as required.
A. ASTM E 84 - Test Method for Surface Burning Characteristics of Building Materials.
B. ____________________________________.
1.4 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's catalog data, detail sheets, and specifications.
C. Samples: Two samples of manufacturer's cork applied to substrate material indicating range of color; 7 by 7 inches (180 by 180 mm).
D. Quality Assurance/Control Submittals:
1. Manufacturer's installation instructions.
E. Closeout Submittals: Maintenance and cleaning instructions.
1.5 QUALITY ASSURANCE
A. Manufacturer's Qualifications:
1. Minimum 10 years experience in producing acoustical panels of the type specified herein.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials in manufacturer's original packages.
B. Inspect the materials upon delivery to assure that specified products have been received.
C. Report damaged material immediately to the delivering carrier and note such damage on the carrier's freight bill of lading.
D. Store materials in a dry place, indoors, or on raised platform protected from weather damage.
1.7 PROJECT CONDITIONS
A. Environmental Requirements: For 24 hours before, during, and continually after installation, maintain temperature and humidity conditions that will approximate interior conditions following building occupancy.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Acceptable Manufacturer: Homasote Company, P.O. Box 7240, West Trenton, NJ 08628-0240; ASD. Tel: (609) 883-3300, Fax: (609) 530-1584, Internet address: http://www.homasote.com; For local rep contact: Sweet's Buyline 1-800-892-1165 (#0878).
B. Requests for substitutions will be considered in accordance with provisions of Section 01600.
NOTE ** Delete paragraph above or below; coordinate with Division 1 requirements.
C. Substitutions: Not permitted.
D. Provide all cork-faced acoustical wall panels from a single manufacturer.
2.2 MATERIALS
NOTE ** Nominal size of panels is 4 by 8 feet (1.219 by 2.438 m). Actual size is 47-3/16 by 95-7/8 inches (1.198 by 2.435 m).
A. Class A Cork Panels: Homasote Nova Cork Panels.
1. Substrate: NCFR(R) fiberboard manufactured from 100 percent recycled wood fiber material; physical properties as follows:
a. Thickness: 1/2 inch (13 mm).
b. Density: 34-40 pcf (545-640 kg/cubic m).
c. Water Absorption by volume (2 hour immersion): 5 percent maximum.
d. Expansion, 50 to 90 percent relative humidity: 0.30 percent.
e. R-value: 0.85 (0.015).
f. NRC: 0.20.
g. Flame Spread (cork on one face): 25, per ASTM E 84.
h. Smoke Developed (cork on one face): 20, per ASTM E 84.
i. Fuel Contributed (cork on one face): 10.
j. Classification: Class A, per NFPA.
B. Class B Cork Panels: Homasote Nova Cork Panels.
1. Substrate: "440" fiberboard manufactured from 100 percent recycled wood fiber material; physical properties as follows:
a. Thickness: 1/2 inch (13 mm).
b. Density: 24-26 pcf (385-415 kg/cubic m).
c. Water Absorption by volume (2 hour immersion): 5 percent maximum.
d. Conditioned Moisture Content: 15 percent maximum.
e. Expansion, 50 to 90 percent relative humidity: 0.25 percent.
f. R-value: 1.11 (0.19).
g. NRC: 0.20.
h. Flame Spread (cork on one face): 70, per ASTM E 84.
i. Smoke Developed (cork on one face): 40, per ASTM E 84.
j. Fuel Contributed (cork on one face): 50.
k. Classification: Class B, per NFPA.
C. Cork Surface: Natural color, virgin cork.
NOTE ** Select fabrication to suit the project from the two paragraphs following.
D. Fabrication: Laminate cork to one side of substrate with continuous uniform coat of waterproof adhesive.
1. Edge Detail: All edges square.
E. Fabrication: Laminate cork to both sides of substrate with continuous uniform coat of waterproof adhesive.
NOTE ** Beveled edges are available on individual panels up to 36 by 48 inches. Panels 48 by 96 inches are available beveled on long edges only. Select edge detail to suit the project from the two subparagraphs below.
1. Edge Detail: Beveled edges, one face only.
2. Edge Detail: Long edges beveled, one face only.
2.3 ACCESSORIES
NOTE ** Installation accessories are dependent on substrates and installation methods as recommended by the manufacturer; select from the following paragraphs accordingly.
A. Metal Frame Clips: Manufacturer's standard clip for securing panels to framing.
B. Adhesive: APA approved panel adhesive.
C. Adhesive: APA AFG-01 subfloor adhesive.
D. Nails: Color coordinated paneling nails, length as required to penetrate wood framing 3/4 inch (19 mm) minimum.
E. Nails: Finishing nails, length as required to penetrate wood framing 3/4 inch (19 mm) minimum.
F. Screws:
1. Wood Framing: Coarse thread drywall type wood screw, length as required to penetrate framing 3/4 inch (19 mm) minimum.
2. Metal Framing: 22-25 gage, drywall type steel screw.
3. Metal Framing: 20 gage or heavier, self-tapping drywall type steel screw.
PART 3 EXECUTION
3.1 EXAMINATION
A. Examine substrates upon which work will be installed.
B. Verify framing member spacing complies with manufacturer's requirements depending on substrates and installation methods.
C. Verify environmental conditions are, and will continue to be, maintained in accordance with manufacturer's recommendations.
D. Coordinate with responsible entity to perform corrective work on unsatisfactory substrates or conditions.
E. Starting work by installer is acceptance of substrate and environmental conditions.
3.2 PREPARATION
A. Follow manufacturer's instructions for allowing panels to be exposed to environmental temperature and humidity conditions for not less than 24 hours before start of installation.
3.3 INSTALLATION
NOTE ** Homasote specifies framing at 16 inches (400 mm) o.c. for all installation methods except over finished walls; panel edges and ends are required to align with framing members or be blocked for all methods. Verify that appropriate framing section or drawing notes comply. Special framing may be required if panel joint layout is defined.
NOTE **
NOTE ** Furring for masonry or concrete walls can be one-by's (19 mm) wood or standard hat-shaped metal furring channels. Specify furring in the appropriate wood or metal framing section.
A. Follow manufacturer's instructions for cutting and installation of panels:
NOTE ** Installation is dependent on substrates; select from the following subparagraphs accordingly, deleting those not required for the project.
