advantages

Homasote 4-Way^® Floor Decking has been laboratory tested for acoustical ratings using ISO, R140 and HUD test methods. The resilient surface provides in-place, wall-to-wall underlayment that will protect carpeting and prolong life beyond the ability of concrete or hardwood surfaces. Homasote 4-Way^® Floor Decking is moisture resistant and protected against termites, rot and fungi. Homasote annular thread nails, #3190, (3 " long, 9 ga., annular threaded shank, 3/8" head), are available for glue-nail application.

Floor Decking adequately supports uniform live loads up to 100 lbs./square foot based on a maximum deflection of 1/360 of the span.

physical data

Density, lb./ft.³............................................................26-28
Tensile, parallel to surface, psi (min.) ................450-700
Transverse, MOR, psi (min.) .............................750-1000
Stiffness, MOE, psi (min.) ......................................86,000
Hardness, Janka Ball lbs. (min.) .................................230
Expansion from 50% to 90% rel. hum. (max.)........0.25%
Water Absorp. (max.)*
       2 hr. immers. % by vol. .............................................5
       24 hr. immers. % by vol. .........................................15
R-Value 1 11/32".........................................................3.27
R-Value 1 3/4".............................................................4.46
Flame spread .............................................Class III (or C)
*sample size tested 1/2" x 12" x 12"

other test data

NAHB Research Foundation, Glue-nail
Structural Tests, March, 1971.
S. B. Barnes & Assoc., Horizontal
Diaphragm Test, 1972
Fire Rated: 1 hr Factory Mutual Test
Design F. C. 77-1 hr. S/N 16738-40
 

building codes

B.O.C.A. Research Report 84-65
S.B.C.C. Report 8653
I.C.B.O. Report 1016
F.H.A. Materials Release 1150c
CMHC. Report No. 11924
 

architectural specification (short form)

All floor deck as shown in drawings shall be Homasote 4-Way^® Floor Decking, 1-11/32" thick, or 1 3/4" thick as indicated, manufactured by the Homasote Company, West Trenton, N.J. and installed in accordance with current Homasote instructions.
 

general construction data

Illustrated, step-by-step instructions are given in Homasote Bulletin FD-8-222-5 which details construction requirements and Homasote approved installation procedure. The following information is intended only for product evaluation.

Construction Site Storage - Protect Floor Decking, as any valuable building product, by storing on a dry platform under shelter. Keep wrapped in weather-capped shipping units until ready to use. If no shelter is available, stack units on skids, 8 " above grade. Panels must be installed in a dry condition. Every effort should be made to prevent water ponding on exposed floor decking.

Framing - Use cross bridging to secure floor joists. Solid bridging is not recommended. Ends of Floor Decking must bear on solid framing without breaks and at all points where framing changes direction. Wall and partition plates can be applied directly over Floor Decking, across floor joists. If partition parallels floor joists, adequate support framing must be installed under partition plate.

Installation - Homasote 4-Way^® Floor Decking must be installed to accommodate expansion and contraction. In large area platforms, provide 1/2" gap for every 50' of length. Trim ends if necessary to assure support. Provide 1/2"' gap at all abutting masonry walls. Stagger end joints on alternate joists. Do not butt squared ends tightly. Gap 1/16" to 1/8 ". Snug all T&G edges together tightly.

Adhesive is recommended with annular threaded nails in application of Floor Decking to effectively cut noise transmission through nails and to provide a stronger, squeak resistant floor.

Glue-nail method - Apply continuous 3/8" beads of APA approved decking adhesive to enough framing for installing one or two panels at a time. Apply two parallel beads to joists supporting butt joints. Apply a continuous bead into groove of Floor Decking T&G.

Position panel and drive three (for 2' wide panels) or five (for 4' wide panels) Homasote #3190 nails (3" long, 3/8" dia. head, annular threaded) into centers of each joist, starting at mid-panel and nailing out to ends. Keep nails back 3/4" from ends, toenailing if required.

Nail each Floor Decking panel completely before proceeding to the next.

Complete nailing of the panels within the glue manufacturer's specified time limit.

All nails must be dimpled 1/16 " below surface.

APA APPROVED DECKING ADHESIVE

Per 1000 sq. ft.

Joist Space

Bead Dia.

Qt. Tubes

16" oc

3/8"

18

24" oc

3/8"

16

NAILS

Per 1000 sq. ft.

Joist

Nail

16" o.c.

24" o.c.

#3190

22 lbs.

16 lbs.

Note: Homasote Company recommends the application of its decking with the glue-nail system. We cannot warrant our product performance if alternate methods are used. 

See current Homasote Bulletin FD-8-222-5 for complete installation instructions, including requirements and precautions for noise control and recommendations for application of various floor coverings and finish flooring.

availability
Homasote building products are available throughout the United States and Canada from local building material dealers. Dealers should have samples and literature describing all Homasote products. If not, write directly to Homasote Company.