(continued)
8/30/04
Indusparquet
®
66
(800) 525-BR111(2711)
•
Fax (800) 577-2711
•
www.br111.com
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Sub-Floor Type: Plywood (or equivalent) Over Concrete
Staple or Glue-Down Application – A suitable moisture barrier (recommended StrateStuff Substrate Safeguard, minimum 6
mil poly film) must be established over concrete with joints overlapped 6" and taped, followed by installation of 3/4"
(preferred) plywood or equivalent (see “Recommend Sub-Flooring” section).
Allow 1/2" expansion space with the plywood (or equivalent) around all vertical objects and sub-floor panels should be spaced
1/8" apart to allow for expansion. Using pneumatic or power-actuated fasteners, attach sub-flooring to concrete with a
minimum of one fastener per square foot. Perform appropriate moisture tests.
Sub-Floor Type: Plywood (or equivalent) Over Wood Structural Panel
Staple or Glue-Down Application – In the staple-down application, a suitable moisture barrier (recommended StrateStuff
Substrate Safeguard, minimum 6 mil poly film)
must be established over plywood (or equivalent) with joints overlapped 18"
and taped. Asphalt felt (15 lbs.) may be used in addition to the moisture barrier, but asphalt felt is not considered a moisture
barrier. In glue-down applications, a moisture barrier is not required unless moisture readings from the sub-floor are at
unacceptable levels (please refer to “Step 5: Testing for Moisture Content”).
Minimum thickness sub-floor material recommendations are satisfactory for 16" on center joist spacing. Thicker sub-floor
recommendations will allow up to 19.2" joist spacing. When joist spacing is greater than 19.2" on center, flooring will exhibit
minimum performance. Minimum performance may result in movement, gaps, and/or noises. A second layer of sub-flooring
material bringing the overall thickness to 1" – 1 1/8", will provide optimum results when joist spacing exceeds 19.2" on center.
Sub-floor panels should be spaced 1/8" apart to allow for expansion.
Hardwood flooring should, whenever possible, be installed perpendicular to flooring joists. Do not install BR-111
™
solid floors over existing glue-down wood floors or over wood floors that exceed 3 1/4" face size. In these applications,
or when installing BR-111
™
solid floors parallel to existing wood floors, install an additional 1/4" layer of plywood to
assist stabilization.
Perform appropriate moisture tests.
Sub-Floor Type: Resilient Tile or Resilient Sheet Vinyl
Staple-Down Application — Vinyl or tile must be level and permanently bonded to the sub-floor with full spread adhesive.
Do not install over more than one layer that exceeds 1/8" in thickness over suitable sub-floor. Vinyl or tiles should not be
loose, crumbled, or in poor condition. Be sure that the staple will penetrate these materials and that breakage does not
occur. Perform appropriate moisture tests.
Glue-Down Application – Vinyl or tile must be in fair condition, level, and permanently bonded to the sub-floor with full
spread adhesive. Do not glue-down hardwood floors on resilient floors that exceed two layers. Clean surface thoroughly
with a good quality household detergent and de-gloss flooring, using an abrasive pad, as necessary to create a good
adhesive bond. If necessary, remove wax coating when present on vinyl, using an appropriate stripper. Perform appropriate
moisture tests.
