Vapor Barrier Over Concrete Floor
Along with the moisture barrier you may want to install an underlayment.
Vapor barrier over concrete floor. Check these three companies out for yourself and make your own decision as to which one is the best concrete floor vapor barrier for your project. Crawl spaces benefit from a polyethylene moisture barrier placed directly over the exposed earth. A vapor barrier should be used for all concrete floors and slabs that are going to receive an impermeable floor finish like epoxy laminate linoleum and wood or if the concrete floor will be used for any purpose where the passage of water vapor through the floor may create problems.
All three companies vapor barriers meet or exceeds all requirements of astm e 1745 09 class a b c. How to install vapor barrier on concrete floor under laminate flooring always read the flooring manufacturers recommendations and instructions before installing the underlayment. Before rolling out the underlayment be sure to sweep vacuum and remove all debris on the substructure.
It insulates and cushions the flooring making it more comfortable to walk on. Moisture can come up through your subfloor especially if you are installing over concrete or below grade. The american concrete institute s guide for concrete floor and slab construction recommends that the thickness of the vapor retarder be at least 10 mils.
A vapor barrier against the concrete surface is generally recommended before wood framing or flooring materials are installed.