(continued)
33
33
//
//
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""
""
SS
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OO
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II
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DD
II
II
NN
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TT
TT
AA
AA
LL
LL
LL
LL
AA
AA
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Indusparquet
®
58
(800) 525-BR111(2711)
•
Fax (800) 577-2711
•
www.br111.com
Monitor the flooring and job-site conditions as they acclimate. If the wood is neither gaining nor losing moisture, an
equilibrium condition has been reached.
NOTE: Equilibrium points vary dramatically throughout the country, from the dry desert areas of the
Southwest to moist areas along the Gulf of Mexico. In addition, a wide range of relative humidity can be
experienced between individual job-sites within the same basic locale. Different heating/air conditioning
systems can also dramatically alter on-site relative humidity. As a result, no one fixed moisture content is right
for all situations, and it is up to the individual installer to establish the proper moisture content for each
installation.
Additional information regarding equalizing exotic hardwood flooring to specific geographic regions is available upon
request, or may be obtained from our reference manual posted on-line at www.br111.com.
STEP 3: RECOMMENDED SUB-FLOORING
Preferred – 3/4" (19mm) CDX Grade Plywood or 3/4" (23/32") OSB PS2 Rated Underlayment with a
minimum 40 lbs. density
Minimum – 5/8" CDX Grade Plywood with a minimum 40 lbs. density
Do not nail over particleboard or similar products, including gypcrete.
DO NOT INSTALL THIS FLOORING OVER RADIANT HEAT FLOORING.
Step 4: Sub-Floor Preparation
Sub-floors Must Be:
■
Dry and free of wax, paint, oil, and debris. Replace any water-damaged or delaminated sub-flooring or underlayments.
Scrape smooth and sweep prior to installation.
■
Level/flat within 3/16" over 10' and/or 1/8" over 6'. High areas or joints can be sanded flat. Low spots can be lifted to
flat using shims or layers of builders felt between wood and sub-flooring during installation.
■
If plywood or equivalent, sub-floor must be structurally sound prior to installation. Sub-floor must be properly secured
with nails or screws every 6 inches along joists to reduce the possibility of squeaking after final installation.
■
Appropriate moisture tests must be performed as outlined in the “Step 5: Testing for Moisture Content” section listed below.
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.
8/30/04
Indusparquet
®
