Allow to set for two hours. Unroll lb. Over this, apply a second similar coating of mastic and roll out a second layer of asphalt or paper in the same direction as the first, staggering the overlaps to achieve an even thickness. Polyethylene: Cover the entire slab with 4 to 6 mil polyethylene film, overlapping the edges 4" to 6", and allowing enough film to extend under the baseboard on all sides.
When moisture conditions are more severe, prime the slab and apply cold, cut-back mastic with a straightedge or fine-tooth trowel sq.
Lay 4 to 6 mil polyethylene film over the slab, overlapping the edges 4 to 6". In either case, roll the film flat or "walk" it in, stepping on every square foot to ensure adhesion. Puncture bubbles to release trapped air. Install the plywood after the vapor retarder is in place.
Lay plywood diagonally across the direction of the finished floor to help prevent cracks along panel edges. Do not use power-actuated fasteners or concrete nails when radiant heat pipes are embedded in the slab.
Lay panels in a staggered pattern with at least 2' long planks along starting and finishing walls. For systems other than radiant heat, the plywood planks may be glued to the plastic with asphalt mastic. Floating subfloor of 2 layers of plywood secured together over a vapor retarder. No fasteners penetrate the retarder or the concrete. Sleepers Flat, dry, kiln-dried, preservative-treated 2" x 4" sleepers in random lengths 18" to 48" can also serve as a nailing base.
Otherwise, yellow pine, fir or other kiln-dried framing species is acceptable. The standard industry rule of thumb is to allow one month per one inch of concrete. This means that if the cement slab is three inches thick, you need to wait at least three months before moving ahead with any projects. In order to ensure proper insulation and structure of your home, you must use the correct type of subflooring materials between your concrete and hardwood.
Two options are notably the best plywood or sleepers. The foam will help if you want a cushion between the boards and the concrete, which can help muffle sound and create a more pleasant walking experience, depending on your preference. Just like when you apply the moisture barrier, start at the back of the room and work towards the door. Instead, work in small sections. Let the adhesive dry for 24 hours after you install the flooring. You will also want to leave a small half-inch gap between the flooring and wall.
Reinstall your baseboards and trim , then clean up the room. Be sure to take a moment to admire your work. Let us teach you how to select the best hardwood floors for any home. This post was originally published on December 15, It has been updated for clarity. Your privacy is very important to us. Accordingly, we have developed this Policy in order for you to understand how we collect, use, communicate and disclose and make use of personal information.
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