Step 1 Prepare the Floor for Installation
If installing the floor over concrete, lay 1/4" (6mm) plastic sheeting over the concrete and overlap the seams by at least 8" (20cm). If the concrete is below grade, bring the plastic at least 4" (10cm) up the wall. You will trim it off at the height of the baseboard once the flooring has been installed. Roll out the manufacturer's recommended foam underlayment, but do not overlap the seams.