Floating Plywood Floor Over Concrete

The underlayment exists to create an air filled gap between the concrete below and the subflooring which will help to insulate the floor and keep the room warmer.

Floating plywood floor over concrete.

It floats or rests on top of a waterproof underlayment instead. Plywood panels should be set down with 1 8 inch gaps between sheets. All about subfloors installing flooring over various sub floors insulating over a structural slab jlc online dricore subfloor membrane panel 3 4 in x 2 ft oriented installing a floating subfloor extreme how to installing plywood flooring over concrete theplywood insul armor the ultimate subfloor 12 recommended how to install hardwood floors on. No fasteners penetrate the retarder or the concrete.

To begin you ll need two layers of 3 8 inch minimum cd exposure 1 plywood subfloor panels cdx 4 foot by 8 foot sheets. Powder actuated fasteners concrete nails shot into the floor work well if you can get them to install with the heads. This requires the use of a hammer drill to. Do not fasten and leave 3 4 of an inch of space between the wall and plywood.

This may be made of various materials including polyethylene plastic or styrofoam. Engineered wood flooring less than thick and solid plank flooring 4 or wider cannot be installed directly to screeds so if you re installing our wide plank flooring you ll need to overlay a plywood over the screed system. Flat dry kiln dried preservative treated 2 x 4 sleepers in random lengths 18 to 48 can also serve as a nailing base. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring.

Screws concrete screws such as tapcons provide for very secure fastening. How to install a wood subfloor over concrete with screeds. First position the plywood layer with its edges parallel to the wall. I suggest laying out felt paper over the concrete sealing the joints with an asphalt adhesive and then laying the wood floor over as though you were installing a floating floor.

Alternatively screw rows of treated 1x4s to the concrete 16 in. Lay the 1x4s perpendicular to the direction you intend to install the floor planks. 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. Floating for floated wood subfloors installed on grade and below grade be certain moisture control is taken into account.

Adhesive mastic newer adhesives are. Then nail the flooring planks with a standard flooring nailer see photo for details.