Laying Plywood On Concrete Floor

There are three primary methods to installing floorboards on a concrete slab.

Laying plywood on concrete floor.

You could screw the battens down into the concrete if you like but its not going to go anywhere if you don t. One method the sleeper on slab system lost popularity 30 years ago because it added too much height to the floor. Plywood is often used as a sub flooring. Using a hilti direct fastening tool shoot concrete nails into 1 2 inch plywood to apply directly onto concrete.

Plywood can easily adhere to concrete. When installed with staples the underlayment sheets are fastened every 2 inches along the edges of the sheet and every 4 inches in the field area. Alternatively screw rows of treated 1x4s to the concrete 16 in. Screws and nails may be spaced farther apart.

Sheets can be butted together just touching not forced tightly together or they can be gapped about 1 8 inch or so. Use a minimum 3 4 inch cd exposure 1 plywood sheathing 4 foot by 8 foot sheets. It is best to lay the flooring plastic side down directly onto the cement floor. One way to attach plywood to a concrete surface is to screw it into place with concrete fasteners.

It can be installed on top of concrete before hardwood flooring or another type of material is installed. Lay as many of these sheets as you need on the concrete to make the first layer of subfloor. Another way that involves less strain and hard work is to glue the plywood to the concrete. Then buy 3x3x0 75 foam blocks and glue them to a 1 2 thick plywood 50 per 4x8 sheet.

First put down 6 mil plastic. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Lay 25mm battens across the floor at 400mm centres fill the gaps between with 25mm celotex and secret nail the flooring to the battens. Install carlisle wide plank floors milled to 1 2 inch thickness by blind nailing and gluing.

Do a floating suspended floor. As a result the material for the subfloor will acclimate to the temperature and moisture content of the room expanding or contracting before the installation rather than after. Lay plywood diagonally across the direction of the finished floor to help prevent cracks along panel edges. Treated plywood to the concrete with concrete screws spaced every 16 in.