Vapor-seal membrane

1411ext11pPMPC premolded membrane vapor seal with plasmatic core is a seven-ply, weather-coated, permanently bonded, semi-flexible vaporproofing/waterproofing membrane. Made with a plasmatic core suspended between two layers of bituminous material and sealed under heat and pressure between liners of asphalt-impregnated felt and a glass-mat liner, it is said to stop moisture migration in footings, concrete floors, and structural slabs.
W.R. Meadows, Hampshire, IL
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