Flooring Over Concrete Subfloor

Plastic for vapor barrier between plywood and slab.

Flooring over concrete subfloor.

Alternatively screw rows of treated 1x4s to the concrete 16 in. The subfloor is the foundation beneath finish flooring materials. Learn how to install beautiful hardwood floors over a concrete slab. Measure and mark the center of all four walls at floor level.

Regular or treated plywood. As with a floated subfloor nwfa recommends a vapor retarder for glue down subfloors when installing wood flooring over concrete. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. 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.

Check your flooring manufacturer s recommendations to ensure you re using a proper subfloor. Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems. I don t think it is a good idea to install raw plywood directly over a slab if avoidable. Floating for floated wood subfloors installed on grade and below grade be certain moisture control is taken into account.

Subfloors are strong versatile and very durable. 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. 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. Use a 6 staple pattern at the perimeter of the subfloor.

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. But this direct installation will result in a floor that s cold underfoot. In basements and in homes with slab on grade foundations the subfloor may simply be a concrete slab. Keep in mind the average cost of laminate flooring is 1 sf to.

A cold floor may be tolerable in. Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. This is a possible basement flooring project you can diy. Laminate floors which may be tongue and groove or snap together are floating floors and not attached to the subfloor.

What is the best way to install a plywood subfloor over concrete slab. Treated plywood to the concrete with concrete screws spaced every 16 in. The concrete subfloor must be sufficiently strong to safely support the flooring furniture and people in the room. How to install a glued subfloor over concrete.

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