Flooring Over Concrete Subfloor

What is the best way to install a plywood subfloor over concrete slab.

Flooring over concrete subfloor.

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. Laminate floors which may be tongue and groove or snap together are floating floors and not attached to the subfloor. Additionally the underlayment is always a waterproof material that will create a waterproof barrier.

Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems. Use a 6 staple pattern at the perimeter of the subfloor. If the concrete subfloor is always dry however laminate floors can be placed directly on the slab. I don t think it is a good idea to install raw plywood directly over a slab if avoidable.

Keep in mind the average cost of laminate flooring is 1 sf to. How to install a glued subfloor over concrete. Regular or treated plywood. In basements and in homes with slab on grade foundations the subfloor may simply be a concrete slab.

Treated plywood to the concrete with concrete screws spaced every 16 in. The subfloor is the foundation beneath finish flooring materials. A cold floor may be tolerable in. This is a possible basement flooring project you can diy.

As with a floated subfloor nwfa recommends a vapor retarder for glue down subfloors when installing wood flooring over concrete. Alternatively screw rows of treated 1x4s to the concrete 16 in. 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. Check your flooring manufacturer s recommendations to ensure you re using a proper subfloor.

Plastic for vapor barrier between plywood and slab. Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. 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. 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.

Learn how to install beautiful hardwood floors over a concrete slab. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Floating for floated wood subfloors installed on grade and below grade be certain moisture control is taken into account. On wood frame floors the subflooring provides a continuous structural surface over the floor joists.

The concrete subfloor must be sufficiently strong to safely support the flooring furniture and people in the room.