Technical Specifications

ManualsBrandsHomasote ManualsBuilding materials1/2" x 2' x 4' Handipanel

F-I. Homasote installations over Concr

ete Slab

for use with Carpet and Pad

Refer to Homasote Comfort Base® as an alternative to 440 Sound Barrier®

for placing on concrete.

In below grade applications, Comfort Base® must

be used.

1) Cover concrete slab with a layer of felt paper, overlapping seams a

minimum of 6".

2) Install tack strips with shims (or wood nailer strips 1-1/2" x 1/2") along

perimeter of area where carpet is to be installed. Tack strip must be

installed into concrete using concrete fasteners.

3) Install Homasote panels leaving a 3/8" gap between panel and tack

strip.

4) Fasten 4’ x 4’ Homasote panels to slab with power-actuated fasteners,

securing the center of the panel first, then the edges, using five

(5) fasteners per 4’ x 4’ panel. Place a fastener in each corner, holding

back 3/4" from panel edge; place one fastener in middle of panel. Allow

for 3/16" expansion gap between all Homasote panels.

5) Attach pad and carpet as per manufacturers instructions.

F-J. Homasote installations over Concrete Slab

for use with Laminate or Floating Floor

Refer to Homasote Comfort Base® as an alternative to 440 Sound Barrier®

for placing on concrete.

In below grade applications, Comfort Base® must

be used.

1) Cover concrete slab with a layer of felt paper, overlapping seams

a minimum of 6".

2) Fasten 4’ x 4’ Homasote panels to slab with power-actuated fasteners,

securing the center of the panel first, then the edges, using five

(5) fasteners per 4’ x 4’ panel. Place a fastener in each corner

, holding

back 3/4" from panel edge; place one fastener in middle of panel. Allow

for 3/16" expansion gap between all Homasote panels.

3) Install laminate or floating floor in strict accordance with flooring

manufacturer’

s instructions.

F-H. Homasote installations over

Concrete Slab

for use with Finished Hardwood Flooring — on or

above grade

Plywood/Homasote to concrete:

Begin by covering the slab with a vapor barrier – Asphalt felt, building

paper, or polyethylene. Refer to The Wood Flooring Manufacturers

Association (NWFMA) for complete application instructions.

2) Install the plywood after the vapor barrier is in place. Refer to the The

Engineered Wood Association (APA) or NWFMA for complete

application instructions.

3) Install Homasote panels to plywood sub-floor, staggering the joints. Use

an APA approved adhesive with annular threaded (ring shank) nails or

screws to secure Homasote panels to plywood sub-floor. (Follow

2, 3, 4, & 5 of "A. Homasote installations for use with Carpet and Pad –

Method 1" as per basic installation instructions over wood sub-floor).

4) Install hardwood flooring as per manufacturer’s installation instructions.

Attach hardwood flooring using 2" staples or cleats, sufficient in length

to toenail through Homasote panels and penetrate plywood underlay-

ment a minimum of 1/2".

Homasote/sleepers to concrete:

1) Begin by covering the slab with a vapor barrier – asphalt felt, building

paper, or polyethylene. Refer to The Wood Flooring Manufacturers

Association (NWFMA) for complete application instructions.

Fasten 4’ x 4’ Homasote panels to slab with power-actuated fasteners,

securing the center of the panel first, then the edges, using five (5)

fasteners per 4’ x 4’ panel. Place a fastener in each corner, holding back

3/4" from panel edge; place one fastener in the middle of the panel.

Allow for 3/16" expansion gap between all Homasote panels and 3/8"

expansion gap at all wall partitions.

Place treated 2" x 4" sleepers directly on top of the Homasote. Follow

recommendations by the APA or NWFMA for fastening sleepers into

concrete. Space sleepers according to flooring manufacturer’s

requirements.

Loosely lay an additional 4-to-6 mil polyethylene film over the sleepers,

overlapping the edges a minimum of 4" on top of the sleepers. Avoid

bunching or puncturing the film, especially between sleepers.

5) Install hardwood floor to 1" x 4" sleepers in strict accordance of

flooring manufacturer’

s instructions.

Sleepers to concrete:

1) Begin by covering the slab with a vapor barrier – Asphalt felt, building

paper

, or polyethylene. Refer to The W

ood Flooring Manufacturers

Association (NWFMA) for complete application instructions.

2) Secure treated 2" x 4" sleepers (16" o.c.) through the vapor barrier into

concrete with power-actuated fasteners. Follow recommendations by

APA or NWFMA for fastening sleepers into concrete.

Install 3/4" plywood sub-floor to the sleepers. Glue and nail/screw

plywood to wood sleepers as per AP

A recommendations.

4) Install Homasote panels to plywood sub-floor. Use an APA-approved

adhesive with annular threaded (ring shank) nails or screws to secure

Homasote panels to plywood sub-floor. (Follow 2, 3, 4, & 5 of "A.

Homasote installations for use with Carpet and Pad – Method 1" as per

Homasote’s basic installation instructions over wood sub-floor).

5) Install hardwood flooring as per manufacturer’s installation

instructions. Attach hardwood flooring using 2" staples or cleats,

sufficient in length to toenail through Homasote panels and penetrate

sub-floor 1/2".

440 SoundBarrier

and N.C.F.R.

Homasote

Combined Installation Instructions

440 SoundBarrier N.C.F.R

Density (lb./cu. ft):

26-28

34-40

Flame Spread:

Class III (or C)

Class I (or A)

Tensile (Parallel): 450-700, psi 400-700, psi

Transverse M.O.R. 750-1000, psi 600-950, psi

Hardness (Janka ball) 230, lbs 275, lbs

Water absorption by vol.

2 hrs. immerse 5% 5%

24 hrs immerse

15%

14%

440 SoundBarrier

Thickness Sizes (nominal)* Wt. (lbs. / sq. ft.) R-Value

1/2" 4' x 4', 4' x 8', 4' x 9', 4' x 10' 1.2 1.2

5/8"

4' x 4', 4' x 8' 1.5 1.33

3/4" 4' x 8' 1.8 1.4

N.C.F.R

Thickness Sizes (nominal)* Wt. (lbs. / sq. ft.) R-Value

1/2" 4' x 8' 1.5 0.85

* Actual length and width 1/8” shorter.

Specifications