Plywood Over Concrete For Hardwood

It lays directly on top of the waterproof barrier or combination of barrier and underlayment to help cushion and insulate.

Plywood over concrete for hardwood.

Most subfloors over concrete use exterior grade plywood or osb oriented strand board. 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. Cut plywood to fit within 1 8 near door jambs and other obstructions where finish trim will not be used. Before hardwood flooring is installed over concrete a plywood subfloor must be installed.

To install a floated subfloor system first place a layer of plywood subfloor panels with the edges parallel to the wall. The floor is secured via the base molding around the edges. I don t remember what it is called but it comes in a roll 6 ft by 50 ft. Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.

Installation over concrete with a calcium carbide reading of greater than 2 5 percent. Learn how to install beautiful hardwood floors over a concrete slab. It looks like a sheet of dimples or very large bubble wrap. Don t glue the plywood to the concrete.

Not all subfloors are the same. 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. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. 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.

Solid hardwood can not be glued except for bamboo 3. Concrete has moisture in it and your wood will mold and rot over time. Once you ve installed a vapor retarder install your subfloor. 1 nail down requires plywood sub flloor you can t nail into concrete last i checked 2.

A moisture control membrane is recommended any time a wood subfloor is installed over concrete. Glue down engineered hardwoods can be glued note. Alternatively screw rows of treated 1x4s to the concrete 16 in. Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system.

Treated plywood to the concrete with concrete screws spaced every 16 in.