W. R. Meadows’ PERMINATOR 20 MIL Underslab Vapor Barrier Reduces Moisture Intrusion to Protect Interiors

Uncontrolled moisture transmission is a leading cause of flooring failures, mold growth, and poor indoor environmental quality.
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March 18, 2026
W. R. Meadows
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PERMINATOR 20 MIL by W. R. Meadows is a durable underslab vapor barrier that helps reduce the penetration of moisture and water vapor through concrete slabs into building interiors. The polyolefin-based technology provides a reliable and economical solution for controlling moisture-related issues in concrete construction.

By limiting uncontrolled moisture transmission, it protects floor coverings, adhesives, and interior building components from moisture-related damage—one of the leading causes of flooring failures, mold growth, and indoor environmental concerns. The barrier also helps reduce radon gas intrusion and resists methane gas migration, contributing to improved indoor air quality.