True vapor barriers should have a permeance rating ... When heavy equipment such as ready mix trucks, laser screeds or concrete buggies will be operating on the vapor retarder, use a 15 mil ...
Homeowners often ask if a vapor barrier is necessary for optimizing attic insulation and protecting their homes from moisture ...
However, concrete is not maintenance-free ... pre-formed extrusions and flashings, and air and vapor barriers. Primary chemistries utilized are Silicone, Urethane, Latex, and STPU’s.
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