Building Subfloor Over Concrete Floor

Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.

Building subfloor over concrete floor. Greatmats recommends sports plus designer foam tiles which are 2x2 feet in size and inch thick. High density foam dance subfloor over concrete if installing a dance floor over concrete utilize a high density foam as the base layer. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Learn how to install beautiful hardwood floors over a concrete slab.

Alternatively screw rows of treated 1x4s to the concrete 16 in. Concrete or tile over concrete are acceptable floors for uninhabited basements. Check your local building code and pay special attention to rules concerning vapor barriers span ratings subfloor thickness and floor drains. On wood frame floors the subflooring provides a continuous structural surface over the floor joists.

The subfloor is the foundation beneath finish flooring materials. Additionally the underlayment is always a waterproof material that will create a waterproof barrier. Use a digital moisture detector to measure the moisture content mc of the concrete slab. In basements and in homes with slab on grade foundations the subfloor may simply be a concrete slab.

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. Subfloors are strong versatile and very durable. The procedure for installing a floor structure over a slab with 2 by 6 joists can be adapted to larger joist sizes if more subfloor space is required. To install any kind of floor covering engineered wood laminate carpeting basement subflooring is required.

Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. Local and national codes contain specific requirements for framed floors and you should consult your local building department before beginning this project.