Solving Moisture Problems in Concrete Slabs

Proper installation of vapor barriers requires sealing all seams and blocking reinforcement up into the upper half of the slab.

Install a below-slab vapor retarder directly below the slab that conforms to the physical requirements of ASTM E 1745 Class A with high puncture resistance, well-taped seams, and with the permeance requirement modified to not exceed 0.01 perms.

Vapor barriers must have the ability to stand up to construction.

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