Flooring Over Concrete Subfloor

Snap the chalk line over the top of the concrete or moisture barrier between the marks on opposite walls making a cross in the center of the room.

Flooring over concrete subfloor.

Treated plywood to the concrete with concrete screws spaced every 16 in. 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. Many basement flooring materials like paint epoxy tile and rubber flooring for example can go down directly over the basement s original poured concrete floor as long as the concrete is in good condition. Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.

Measure and mark the center of all four walls at floor level. But this direct installation will result in a floor that s cold underfoot. Floating for floated wood subfloors installed on grade and below grade be certain moisture control is taken into account. Use a 6 staple pattern at the perimeter of the subfloor.

How to install a glued subfloor over concrete. On wood frame floors the subflooring provides a continuous structural surface over the floor joists. A cold floor may be tolerable in. Lm from hot springs ar.

As with a floated subfloor nwfa recommends a vapor retarder for glue down subfloors when installing wood flooring over concrete. Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. Plastic for vapor barrier between plywood and slab. This may be as simple as a 6 mil polyethylene plastic covering 100 percent of the concrete and brought up all walls then trimmed after the floor has been installed.

If the concrete subfloor is always dry however laminate floors can be placed directly on the slab. The concrete subfloor must be sufficiently strong to safely support the flooring furniture and people in the room. What is the best way to install a plywood subfloor over concrete slab. This is a possible basement flooring project you can diy.

In basements and in homes with slab on grade foundations the subfloor may simply be a concrete slab. Additionally the underlayment is always a waterproof material that will create a waterproof barrier. Regular or treated plywood. Subfloors are strong versatile and very durable.

Keep in mind the average cost of laminate flooring is 1 sf to. Laminate floors which may be tongue and groove or snap together are floating floors and not attached to the subfloor. I don t think it is a good idea to install raw plywood directly over a slab if avoidable. Check your flooring manufacturer s recommendations to ensure you re using a proper subfloor.

Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring.