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- SECTION 06165
-
- FIBERBOARD UNDERLAYMENT
- 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:
- "ComfortBase(tm)" single-ply concrete flooring
- system. See their other sections for wood roof
- decking, acoustical barriers (fire-rated and non-
- rated), and acoustical wall panels (fabric-covered
- and cork-faced).
- NOTE **
- NOTE ** "ComfortBase(tm)" is a resilient high-density
- fiberboard underlayment providing a constant
- thermal break from cold concrete floors and
- reducing foot, leg, and back pain caused by
- standing or walking on concrete floors. A uniquely
- engineered bottom surface provides built-in
- ventilation and allows the concrete to breath.
- NOTE **
- NOTE ** SECTION 06165 - FIBERBOARD UNDERLAYMENT, Copyright
- 1998, The Architect's Catalog, Inc.
-
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
-
- A. Underlayment for finish flooring over concrete slabs.
- NOTE ** Select subparagraphs below applicable to project.
- 1. Floating method.
- 2. Adhesive method.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete sections below not relevant to this project;
- add others as required.
-
- A. Section 03300 - Cast-In-Place Concrete.
-
- B. Section 09310 - Ceramic Tile.
-
- C. Section 09647 - Wood Parquet Flooring.
-
- D. Section 09648 - Wood Strip Flooring.
-
- E. Section 09650 - Resilient Flooring.
-
- F. Section 09680 - Carpet.
-
- G. _________________________________.
-
- 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 product and complete
- installation data for all materials in this
- specification.
-
- C. Installation Guide: Product manufacturer's written
- installation guide.
-
- D. Closeout Submittals: Warranty and Manufacturer's
- performance certifications.
-
- 1.5 DELIVERY, STORAGE, AND HANDLING
-
- A. Deliver materials in the manufacturer's original sealed,
- labeled packaging.
-
- B. Store materials inside when possible, stored flat at all
- times before installation. For exterior storage, place
- in a dry, well-vented area above ground on wooden pallets
- and covered with waterproof tarpaulins.
-
- C. Inspect the materials upon delivery to assure that
- specified products have been received.
-
- D. Report damaged material immediately to the delivering
- carrier and note such damage on the carrier's freight
- bill of lading.
-
- E. Remove protective packaging not less than 24 hours before
- installation to allow material to acclimate.
-
- 1.6 PROJECT CONDITIONS
-
- A. Maintain temperature and humidity conditions before,
- during, and after application closely approximating those
- which will exist when building is occupied.
-
- B. Concrete slab must be dry before application. Do not
- apply where moisture is present.
-
-
- 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. Proposed
- substitutions shall meet the performance and quality
- standards of this specification.
- NOTE ** Delete paragraph above or below; coordinate with
- Division 1 requirements.
-
- C. Substitutions: Not permitted.
-
- D. Provide all fiberboard underlayment from a single
- manufacturer.
-
- 2.2 MATERIALS
- NOTE ** Nominal size of ComfortBase(tm) panels is 4 by 4
- feet (1.219 by 1.219 m); weight is 1.2 psf (843
- kg/square m).
-
- A. Fiberboard Underlayment: ComfortBase(tm) high-density
- fiberboard made from 100 percent recycled newsprint with
- 1/4 inch (6 mm) deep by 4 inch by 4 inch (100 by 100 mm)
- grid on one side only.
- 1. Thickness: 1/2 inch (13 mm).
- 2. Density: 26-28 pcf (416-448 kg/cubic m).
- 3. Tensile Strength parallel to surface: 450-700 psi
- (3,100-4,830 kPa) minimum.
- 4. Transverse M.O.R.: 750-1,000 psi (5,175-6,900 kPa)
- minimum.
- 5. Hardness (Janka Ball): 230 lbs. (104 kg).
- 6. Water Absorption by Volume:
- a. 2 hour immersion: 5 percent maximum.
- b. 24 hour immersion: 15 percent maximum.
- 7. Expansion, 50 to 90 percent relative humidity: 0.25
- percent.
- 8. Noise Reduction Coefficient: 0.20.
- 9. R-value: 1.2 (0.021).
- 10. Flame Spread: Class III (or C).
-
- 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. Adhesive: APA approved subfloor adhesive meeting APA AFG-
- 01 specification.
-
- B. Wood Nailers: 1/2 inch (13 mm) thick by 1-1/2 inches (38
- mm) wide.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
-
- A. Examine substrates upon which work will be installed.
-
- B. Verify environmental conditions are, and will continue to
- be, maintained in accordance with manufacturer's
- recommendations.
-
- C. Coordinate with responsible entity to perform corrective
- work on unsatisfactory substrates or conditions.
-
- D. Starting work by installer is acceptance of substrate and
- environmental conditions.
-
- 3.2 PREPARATION
-
- A. Follow manufacturer's instructions by separating and
- allowing underlayment boards to be exposed to
- environmental temperature and humidity conditions for not
- less than 24 hours before start of installation.
-
- 3.3 INSTALLATION
-
- A. Follow manufacturer's recommendations for temperature and
- humidity conditions before, during, and after
- installation. (Bowing of panels away from grid side is
- normal before application.)
-
- B. Allow 3/16 inch (4.7 mm) space at panel joints, 3/8 inch
- (9.5 mm) space at walls and partitions, to allow for
- expansion and contraction.
-
- C. Provide 1/2 inch (13 mm) expansion joints at 50 feet
- (15.240 m) in each direction.
-
- D. Stagger all panel joints regardless of panel size.
- NOTE ** Select application method(s) from the paragraph
- below. Delete method(s) not required for the
- project.
- NOTE **
- NOTE ** Underlayment for carpet and pad may be installed
- using either of the methods in the following two
- paragraphs.
-
- E. Underlayment Application for Carpet and Pad (Floating
- Method):
- 1. Nail or glue wood nailers to concrete where tackless
- strips are to be used.
- 2. Lay panels in position, grid side down.
- 3. Allow 48 hours before installation of pad and carpet.
- NOTE ** ComfortBase(tm) applied using the floating method
- above, applied to a 4 inch (100 mm) concrete slab
- and covered with 1/2 (12.7 mm) rebond foam pad and
- 1/2 inch (12.7 mm) pile carpet, tested by ASTM E 90-
- 96 and E 492-90, produces an STC 48 and IIC 80.
-
- F. Underlayment Application for Carpet and Pad (Adhesive
- Method):
- 1. Nail or glue wood nailers to concrete where tackless
- strips are to be used.
- 2. Apply continuous 3/8 inch (9.5 mm) beads of adhesive
- on grid surface of underlayment panels:
- a. Each direction at 1/3 points .
- b. 3/4 inch (19 mm) from each edge.
- 3. Place adhesive side down to concrete and apply
- pressure over entire surface.
- 4. Maintain installed panels traffic-free for 24-48
- hours before installation of pad and carpet.
-
- G. Underlayment Application for Adhered Carpet, Vinyl, Wood
- Parquet, Wood Strip, and Ceramic Tile Flooring (Adhesive
- Method):
- 1. Apply continuous 3/8 inch (9.5 mm) beads of adhesive
- on grid surface of underlayment panels:
- a. Each direction at 1/3 points .
- b. 3/4 inch (19 mm) from each edge.
- 2. Place adhesive side down to concrete and apply
- pressure over entire surface.
- 3. Maintain installed panels traffic-free for 24-48
- hours before installation of plywood.
- NOTE ** Plywood installed as follows must be suitable
- thickness and grade acceptable to finish flooring
- manufacturer.
- 4. Install 4 foot by 4 foot (1.219 by 1.219 m) maximum
- sheets of 3/8 inch (9.5 mm) minimum thickness plywood
- of suitable underlayment grade over installed panels.
- a. Trowel adhesive over underlayment panels in 100
- percent coverage fashion.
- b. Apply plywood so that plywood joints do not
- coincide with underlayment joints.
- c. Nail each corner and center of plywood using
- concrete nails to penetrate concrete 1 inch (25
- mm) minimum.
- d. Use additional nails as necessary to hold plywood
- flat.
- 5. Maintain installed plywood traffic-free for 24-48
- hours before installation of finish flooring.
-
- 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.
-
-
- END OF SECTION
-