Building A Wooden Floor Over Concrete

Lay a plastic moisture barrier and then screw 3 4 in.

Building a wooden floor over concrete.

Wood planks to the plywood. 5 1 lay flat the pressure treated 2 x 3 s around the entire perimeter of the room maintaining a expansion gap between each 2 x 3 and the walls. It floats or rests on top of a waterproof underlayment instead. These will be the end sill plates that support the ends of the floor joists.

Firstly roll out the underlayment so it covers the entire floor. 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. If you love solid wood floors and your home rests on a concrete slab you re not out of luck. Trim the underlay to the edge of the wall with a utility knife.

Wood floor over concrete details. Plywood to the concrete. Install it flat on the slab surface with the outside edge aligned against the side wall or the edge of the floor line. This may be made of various materials including polyethylene plastic or styrofoam.

Any installation of wooden flooring over a concrete slab must be carried out only after having a polyethylene vapor barrier on the ground where the concrete slab is laid and on the top of the concrete slab. 5 3 screw each sleeper at least 2 into the concrete slab. The underlay is used to dampen sound and to cushion the floor. 5 2 use shims to level if necessary and if several thicknesses are required glue shims together.

The procedure for installing a floor structure over a slab with 2 by 6 joists can be adapted to larger joist sizes if more subfloor space is required. Secure each length to the slab with concrete nails spaced approximately 32 inches apart and 8 to 12 inches from each end.