How To Make A Plywood Floor Over Concrete

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

How to make a plywood floor over concrete.

If any flooring is laid directly on the concrete floor the moisture will become trapped and continue to accumulate over time. One way to attach plywood to a concrete surface is to screw it into place with concrete fasteners. For the second story a foamed type of lightweight concrete is being used over plywood for sound absorption between floors. We are building a 2 story condominium complex with concrete slab on grade.

Pouring concrete over plywood can be even more challenging than installing plywood over concrete. Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring. Please send us information regarding the proper chemical to use to achieve the proper mix for the lightweight concrete. Nevertheless this is not all that uncommon.

Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system. Alternatively screw rows of treated 1x4s to the concrete 16 in. Plywood is often used as a sub flooring. Learn how to install beautiful hardwood floors over a concrete slab.

Treated plywood to the concrete with concrete screws spaced every 16 in. The build up of water vapor will cause problems such as mold and mildew. If your floor is concrete use a concrete grinder for large open areas or a 4 inch or 8 inch angle grinder with a cup wheel attachment made for use on concrete. It can be installed on top of concrete before hardwood flooring or another type of material is installed.

Another way that involves less strain and hard work is to glue the plywood to the concrete.