How To Lay A Plywood Floor Over Concrete

Moisture levels in concrete floors.

How to lay a plywood floor over concrete.

Concrete slab with plywood sub floor 1 1 2 inches or more height allowance. Check your flooring manufacturer s recommendations to ensure you re using a proper subfloor. So you need to allow it to cure for at least 60 days before even bothering to check the moisture level. As with a floated subfloor nwfa recommends a vapor retarder for glue down subfloors when installing wood flooring over concrete.

How to install subfloor sleepers over slab in the basement and other rooms with a concrete floor. However a new concrete floor contains a lot of moisture. Treated plywood to the concrete with concrete screws spaced every 16 in. Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.

For flatness and clean the slab install the vapour barrier install the sleepers position insulation panels screw in the plywood subflooring suggested products. Learn how to install beautiful hardwood floors over a concrete slab. Alternatively screw rows of treated 1x4s to the concrete 16 in. How to install a glued subfloor over concrete.

Rather than tear out a wooden floor and installing concrete your wooden floor can be turned into a beautiful concrete floor with a concrete microtopping. Lay down 3 4 inch plywood and then follow the directions above. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Concrete has moisture in it and your wood will mold and rot over time.

If you re installing plywood over an existing dry concrete floor you shouldn t have any problem. Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. There is a product you can buy from your local home depot store for putting under a floor over concrete. When installed correctly your concrete over plywood floor will not permit moisture through will not warp or buckle and will come with all the benefits of concrete in an easy to care for floor.

It looks like a sheet of dimples or very large bubble wrap. After installing a vapor retarder if necessary cut your plywood. I don t remember what it is called but it comes in a roll 6 ft by 50 ft.