(continued)
8/30/04
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Indusparquet
®
59
(800) 525-BR111(2711)
•
Fax (800) 577-2711
•
www.br111.com
Step 5: TESTING FOR MOISTURE CONTENT
Using a quality moisture meter, measure the moisture content of both the sub-floor and the hardwood flooring. Sub-floors
must not exceed 12% moisture content and the difference between sub-floor and hardwood flooring cannot
exceed 4%.
If sub-floors exceed this amount, an effort should be made to locate and eliminate the source of moisture before further
installation. A moisture barrier (StrateStuff Safeguard is recommended; 6 mil polyethylene film minimum) may
be required in addition to the 15 lbs. asphalt felt. Asphalt felt is not considered a moisture barrier.
STEP 6: INSTALLING THE FLOOR
Helpful Tips
■
Remove flooring from several different cartons to maximize color and shade mixture.
■
Stagger the ends of boards at least 6" in adjacent rows.
■
Installation parallel to the longest wall provides best visual effect.
■
Before you begin installing the hardwood floor, cover sub-floor area with 15 lbs. asphalt felt.
Doorway and Wall Preparation
Undercut or notch-out door casings 1/16" higher than the thickness of the flooring being installed to avoid difficult scribe
cuts during installation. Also remove existing base and shoe molding as well as doorway thresholds; each can be replaced
after installation is complete.
Establish Starting Point
An exterior wall is usually the straightest and best reference line to start the installation. Direction of finished flooring should
be at right angles to the floor joists whenever possible. Establish a starting line by leaving a minimum 1/2" expansion gap
around all vertical obstructions. In large spans, more spacing may be needed depending on geographical area, interior
climate control, and time of the year. Measure this distance from the starting wall (in at least two places) close to the starting
wall’s opposite corners. Mark these points and snap a working chalk line parallel to the starting wall allowing the required
expansion space between the starting wall and the edge of the first row of flooring.
Installing The Floor
On the first row of flooring use 6d or 8d flooring nails to top nail surface of flooring and countersink (pre-drilling nail holes
will prevent splits).
Nails should hit the joist whenever possible. To ensure proper alignment of flooring, make sure the flooring along the
working chalk line is straight.
Allowing for a 1/2" minimum expansion gap is critical. Wood expands and contracts with changes in humidity. Wood will
buckle and/or cup if an adequate expansion space is not provided. Always allow for expansion when making end or side
cuts around vertical objects.
CAUTION: It is extremely important to use the appropriate nailer and fasteners for installation.
We recommend Powernail
®
manual Model 45 T&G Powernailer and relavent powercleats nails. Powernail
®
pneumatic Model 445 Powernailer or equivalent may also be used (www.powernail.com).
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Indusparquet
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