Above-code crawlspace seal
High-Radon Crawlspace Vapor Barriers
Portland metro homes often sit over soils with elevated radon. We install a professional, above-code crawlspace vapor barrier — 10 mil plastic with every joint taped — that creates an airtight seal over the soil so soil gas can be directed through a proper mitigation system (installed by a radon specialist).
We specialize in the vapor barrier itself — not radon fans, piping, or full mitigation system installation.