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: "N.C.F.R.(R) Homasote" and "N.C.F.R.(R) Wall Shield" are Class A fire-rated panels used for sound-deadening and tackable applications where fire ratings are important. These products are made from 100 percent recycled, all wood fiber material completely impregnated with fire retardant chemical ingredients, treated to resist moisture, termites, and fungi, and compressed into high density, structural exterior building board. The resulting product contain no asbestos or urea formaldehyde additives and offer constant insulation against air, moisture, and noise penetration.
NOTE **
NOTE ** See The Homasote Company's other sections for non-rated acoustical barriers, wood roof decking, fiberboard underlayment, and acoustical wall panels.
NOTE **
NOTE ** SECTION 09831 - FIRE-RATED ACOUSTICAL BARRIERS, Copyright 1998, The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Select paragraphs below applicable to project.
A. Tackable wall panels.
B. Ceiling paneling.
C. Display wall.
D. Tack board.
E. Tackable substrate for fire-rated wall covering.
F. Wall sheathing.
G. Noise-deadening resilient carpet underlayment.
H. Soffits.
I. Fire-rated garage interiors.
J. Interior siding.
K. Exterior siding.
L. _________________________________.
1.2 RELATED SECTIONS
NOTE ** Delete sections below not relevant to this project; add others as required.
A. Section 06100 - Rough Carpentry.
B. Section 07260 - Vapor Retarders.
C. Section 07460 - Siding.
D. Section 09110 - Non-Load-Bearing Wall Framing.
E. Section 09250 - Gypsum Board.
F. Section 09680 - Carpet.
G. Section 09900 - Painting.
H. Section 10300 - Fireplaces and Stoves.
I. 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. ASTM D 1037 - Test Methods of Evaluating Properties of Wood-Base Fiber and Particle Panel Materials.
C. UL - Report No. R-5268.
D. UL Canada - File No. CR909.
E. ____________________________________.
1.4 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's catalog data, detail sheets, and specifications.
C. Quality Assurance/Control Submittals:
1. Manufacturer's installation instructions.
1.5 QUALITY ASSURANCE
A. Manufacturer's Qualifications:
1. Minimum 10 years experience in producing fire-rated 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.
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 fire-rated panels from a single manufacturer.
2.2 MATERIALS
NOTE ** Select type of fire-rated panel from the two types below; delete type not required for the project.
NOTE **
NOTE ** Nominal sizes of N.C.F.R.(R) Homasote panels are 4 by 4 feet (1.219 by 1.219 m), 4 by 8 feet (1.219 by 2.438 m), 4 by 10 feet (1.219 by 3.048 m), 4 by 12 feet (1.219 by 3.658 m), and 8 by 12 feet (2.438 by 3.658 m). Other sizes are available on request.
A. N.C.F.R.(R) Homasote: Class A fire rated, physical properties as follows:
5. Hardness (Janka Ball): 275 lbs. (124 kg) minimum.
6. Water Absorption by Volume; ASTM D 1037:
a. 2 hour immersion: 5 percent maximum.
b. 24 hour immersion): 14 percent maximum.
7. Expansion, 50 to 90 percent relative humidity: 0.30 percent.
8. R-value: 0.85 (0.015).
9. Noise Reduction Coefficient: 0.20.
10. Finish: Natural.
11. Fire Hazard Classification: Flame Spread 25, Fuel Contributed 0, Smoke Developed 20, per UL Building Materials Index.
NOTE ** Nominal sizes of N.C.F.R.(R) Wall Shield panels are 4 by 4 feet (1.219 by 1.219 m), 4 by 8 feet (1.219 by 2.438 m), 4 by 10 feet (1.219 by 3.048 m), and 4 by 12 feet (1.219 by 3.658 m).
B. N.C.F.R.(R) Wall Shield: Class A fire rated, physical properties as follows:
5. Hardness (Janka Ball): 275 lbs. (124 kg) minimum.
6. Water Absorption by Volume; ASTM D 1037:
a. 2 hour immersion: 5 percent maximum.
b. 24 hour immersion): 14 percent maximum.
7. Expansion, 50 to 90 percent relative humidity: 0.30 percent.
8. R-value: 0.85 (0.015).
9. Noise Reduction Coefficient: 0.20.
10. Finish: Natural.
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. Nails: Length as required to penetrate wood framing 3/4 inch (19 mm) minimum.
D. Nails: Finishing nails, length as required to penetrate wood framing 3/4 inch (19 mm) minimum.
E. 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.
NOTE ** Delete the following paragraph if panels are applied only as carpet underlayment.
NOTE **
NOTE ** To prevent condensation damage within walls, it is good building practice to install a vapor retarder in buildings where the January temperature falls below 40 degrees F (4.5 degrees C).
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 by separating and allowing panels to be exposed to environmental temperature and humidity conditions for not less than 24 hours before start of installation.
B. Precondition panels larger than 4 by 8 feet (1.219 by 2.438 m) panels by sprinkling with water and stacking wet side up overnight.
3.3 INSTALLATION
NOTE ** Homasote requires wall framing at 16 inches (400 mm) o.c. for 1/2 inch (13 mm) boards. 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.
A. Follow manufacturer's instructions for cutting and installation of fire rated panels.
B. Install panels in dry condition only.
NOTE ** Select applications from paragraphs below.
NOTE **
NOTE ** Any wood or hardboard finish paneling, or metal or vinyl siding applied over N.C.F.R.(R) Homasote must be installed with nails of sufficient length to penetrate Homasote and anchor into framing 1 inch (25 mm) minimum.
NOTE **
NOTE ** Any component added to or structurally combined with N.C.F.R.(R) Homasote when used as siding, paneling, or underlayment, must be Fire Hazard Classification to maintain continuity.
C. N.C.F.R.(R) Homasote Exterior Applications:
1. Apply panels over wood sheathing or direct to framing by glue-nailing or with nails only.
2. Allow 3/16 inch (4.7 mm) gap at exposed joints, seal with calking, and cover with battens.
D. N.C.F.R.(R) Homasote Interior Applications:
1. Apply panels direct to framing or solid furring by glue-nailing or with nails only.
2. Apply panels to old masonry walls by glue-nailing, provided walls are flat and solid.
3. Allow 3/16 inch (4.7 mm) gap at butt joints, 3/8 inch (9.5 mm) gap at floor, ceiling, and abutting framing.
E. N.C.F.R.(R) Homasote Underlayment Applications on Wood Sub-Flooring:
NOTE ** Where used as underlayment, fire rating can be maintained only when fire rated carpet and pad are used.
NOTE **
NOTE ** Sub-floor must be flat (not cupped), dry, level, and securely fastened to joists.
1. Shim or sand sub-floor as necessary to provide a flat surface continuity for panels.
2. Apply underlayment panels with APA approved decking adhesive and nails, or with nails only.
3. Allow 3/16 inch (4.7 mm) gap at abutting edges; 3/8 inch (9.5 mm) space at walls and partitions.
NOTE ** N.C.F.R.(R) Wall Shield is for use with UL listed solid-fuel type room heaters and listed fireplace stoves in residential type structures. It is approved for use with vertical flue installations only, not for use where flue passes through panels.
F. N.C.F.R.(R) Wall Shield Applications:
NOTE ** Locations and attachment of non-combustible spacers and method of application of panels depends on type of finish to be used on panel face. Consult manufacturer's recommendations.
1. Space panels 1 inch (25 mm) from wall with non-combustible spacers attached to wall and spaced as recommended by panel manufacturer.
2. Space panels 1 inch (25 mm) minimum and 3 inches (75 mm) maximum above floor and below ceiling.
3. Extend panels 8 inches (203 mm) minimum each side of projected area of back of stove or flue.
3.4 ADJUSTING AND CLEANING
A. Follow manufacturer's instructions for repairing damaged panels.
B. Replace panels that cannot be repaired to "as new" condition.
