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.
How to make a plywood floor over concrete.
Also if the flooring is carpet or manufactured from organic material such as wood or laminate not only will mold grow but the floor will buckle and begin to lift and become unusable.
Get a comprehensive breakdown on which materials to use what to take into consideration and what steps to take for four subfloor systems.
Pouring concrete over plywood can be even more challenging than installing plywood over concrete.
One way to attach plywood to a concrete surface is to screw it into place with concrete fasteners.
Learn how to install beautiful hardwood floors over a concrete slab.
Please send us information regarding the proper chemical to use to achieve the proper mix for the lightweight concrete.
Lay 6 mil polyethylene sheeting over the concrete to minimize moisture migration from the concrete up into the wood flooring.
Grinding and repairing a concrete floor can create concrete dust so be safe and wear a respirator a dust mask will not give you enough protection.
The build up of water vapor will cause problems such as mold and mildew.
Nevertheless this is not all that uncommon.
Floated subfloor alternate subfloor glue down sub floor and the nail down subfloor system.
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.
If any flooring is laid directly on the concrete floor the moisture will become trapped and continue to accumulate over time.
Treated plywood to the concrete with concrete screws spaced every 16 in.
It might be done to create a subfloor for ceramic tile to be installed over an existing wood subfloor or for making a concrete countertop.
Plywood is often used as a sub flooring.