Engineered Wood Flooring On Plywood Over Concrete Slab

This may be as simple as a 6 mil polyethylene plastic covering 100 percent of the concrete and brought up all walls then trimmed after the floor has been installed.

Engineered wood flooring on plywood over concrete slab.

Consult the product data sheet for instructions regarding specific trowel requirements. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. In general use a notched trowel to spread the adhesive. These layers enable the wood to remain rigid and resist contracting and expanding when moisture is present.

Plank flooring four inches and wider requires either the plywood on slab system or the sleeper system topped with a minimum of 5 8 inch thick plywood or osb. Use a minimum of two layers 3 8 10 mm cd exposure 1 plywood subfloor panels cdx in 4 x 8 sheets. Treated plywood to the concrete with concrete screws spaced every 16 in. Plywood on slab begin by covering the slab with a vapor retarder.

Alternatively screw rows of treated 1x4s to the concrete 16 in. A plywood core makes engineered flooring the most stable choice provided the slab is flat and dry by ken fischer issue 170 if you want to install flooring on a concrete slab your floor covering choices are limited. Installing engineered hardwood flooring over concrete too tight against a stationary object will not allow room for normal expansion and may cause a failure. Pass the trowel through the glue at a 45 degree angle and install hardwood flooring immediately after the adhesive is spread.

You can t nail solid wood flooring to concrete without first installing a plywood subfloor. Install a subfloor solution. The nwfa guidelines say that a vapor retarder over concrete needs to be impermeable meaning a class i membrane according to building codes. Two possibilities for subfloors are plywood on slab and sleeper.

A subfloor is necessary to install before the flooring can be put into place.