Plywood Over Concrete For Hardwood

To install a floated subfloor system first place a layer of plywood subfloor panels with the edges parallel to the wall.

Plywood over concrete for hardwood.

Treated plywood to the concrete with concrete screws spaced every 16 in. Concrete has moisture in it and your wood will mold and rot over time. Often when we talk of subflooring people think of lauan plywood which is used as subflooring over thicker plywood in preparation for installing a vinyl floor. Loosely lay a nailing surface of 3 4 4 x 8 exterior plywood panels over the entire area leaving a 3 4 space at the wall line and 1 4 to 1 2 between panels.

Don t glue the plywood to the concrete. Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. Alternatively screw rows of treated 1x4s to the concrete 16 in. It looks like a sheet of dimples or very large bubble wrap.

A moisture control membrane is recommended any time a wood subfloor is installed over concrete. Float this is when the hardwood is clicked into each other or glued at joints but is not attached to the floor. It lays directly on top of the waterproof barrier or combination of barrier and underlayment to help cushion and insulate. Installation over concrete with a calcium carbide reading of greater than 2 5 percent.

Solid hardwood can not be glued except for bamboo 3. Most subfloors over concrete use exterior grade plywood or osb oriented strand board. There is a product you can buy from your local home depot store for putting under a floor over concrete. Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.

Glue down engineered hardwoods can be glued note. The floor is secured via the base molding around the edges. Learn how to install beautiful hardwood floors over a concrete slab. Not all subfloors are the same.

Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Cut plywood to fit within 1 8 near door jambs and other obstructions where finish trim will not be used. Once you ve installed a vapor retarder install your subfloor. Do not use pressure treated plywood unless it has been kiln dried after treatment kdat and moisture content coincides with the in use environment of the facility in which the flooring is being installed.

Install the plywood after the vapor retarder is in place.