Supress® Sound-Engineered Plywood

Our Sound-Engineered Plywood (SEP) product contains no metal and has tapered tongue-and-groove construction. This plywood is for new construction or easily fits over your existing subfloor to deliver superb acoustic performance. Use it to solve noise problems with hard-surface floor coverings such as hardwood, marble, stone, or vinyl tile. STC rated to 61 and IIC to 51, and available with anti-mold protection. Use Supress Sound-Engineered Sealant on any cut-outs or penetrations.

Supress Sound-Engineered Plywood is available in the following 4 x 8 ft width panels, with a square edge:

PRODUCT THICKNESS PANEL SIZE USES
SEPW5848 5/8-inch 4 x8 ft Shear wall
SEPU5848 5/8-inch 4 x8 ft Floor underlayment/Remodel
SEPS3448 3/4-inch 4 x8 ft Subfloor/New construction
SEPS9848 1-1/8-inch 4 x8 ft New luxury/Commercial construction
AS287 Sound-Engineered Sealant Use on all panel edges, joint or seams.

Seal Cut-outs and Penetrations

Due to the aggressive nature of air- and structure-borne sound, Supress recommends that any cut-outs or penetrations in the flooring system for mechanical, HVAC, pipes, wiring, fire sprinkler nozzles, etc. be completely sealed with Supress Acoustical Sealant.
  How to install Supress® Sound-Engineered Plywood Subfloor

Prepare Surface and Materials
The joist and cross-member edges must be reasonably clean and dry. Remove nails, screws or any obstructions which are covering or protruding from the joist and cross-member line.

Protect smooth panel faces and tongue and groove edges from damage prior to and during installation. To minimize the potential for panel buckling and/or nail-pop, allow Supress SEP panels to equalize their moisture content at the job site by allowing air circulation on all sides for a few days after delivery.

Measure and Cut
Measure the space and, if needed, cut the panel (with standard or carbide-tipped saw blades) to the proper size, minimizing the gaps between panels and with other surfaces.

Glue and Attach
Glue-nailing is recommended for Supress SEP panels. Use adhesive conforming to ASTM D3498 and spread only enough adhesive in a 1/4" bead on framing members to lay 1 or 2 panels at a time. This is particularly important in warm weather conditions where the adhesive will dry more quickly. Panels may also be nailed only with appropriately-sized cement-coated ring- or screw-shank nails. Specifications to be provided by project structural engineer.

Glued tongue and grooved edges are recommended under thin floor coverings to keep joints snug. Glue by spreading a thin line of adhesive (1/8" bead) into the open groove. Avoid using too much adhesive as this will create squeeze-out and require additional labor for clean-up.

Use 8d cement-coated ring- or screw-shank nails at a maximum spacing of 6" at supported panel edges and at a maximum spacing of 12" at intermediate supports.

Attach panels GRADE STAMP UP, away from joist faces and perpendicular across framing members continuously for at least 2 spans. Stagger the end joints of the panels across framing members.

Seal Cut-outs and Penetrations
Due to the aggressive nature of air- and structure-borne sound, Supress recommends that any cut-outs or penetrations in the flooring system for mechanical, HVAC, pipes, wiring, fire sprinkler nozzles, etc. be completely sealed with Supress Acoustical Sealant.

Additional Supress Sound-Engineered Products:

Supress Sound-Engineered Products are available through local professional building supply dealers and distributors throughout the US, Canada and Mexico.


 

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