PMPC

When a demolition team went to tear down a gymnasium containing W. R. MEADOWS PMPC at Ursilane College on the east side of Cleveland, Ohio, they found something remarkable. While demolishing the building, the workers found that the PMPC, placed below the building’s concrete foundation in 1973, was still intact–looking as if it had been placed this year: solid, no cracks, with its plastic release sheet still intact. PMPC or, PREMOULDED MEMBRANE VAPOR SEAL WITH PLASMATIC CORE, is a patented (#US 7,179,761) seven-ply, weather-coated, permanently bonded, semi-flexible vaporproofing/waterproofing membrane. It is composed of an exclusive plasmatic core suspended mid-point between two…