Test and design
A qualified local radon professional establishes the testing and mitigation strategy.

Explore barrier continuity as one part of a professionally designed radon strategy for foundations and below-grade construction.
Foundation construction context; a radon barrier is not identified in this photograph.
A radon barrier is a specialized part of a building design. Continuity at foundations, service penetrations and wall junctions matters, alongside testing and the wider mitigation strategy.
Use a product and assembly with evidence for the project’s radon-barrier requirements; a general waterproofing coating is not automatically suitable.
Service entries, junctions and joints need continuity within the specified barrier.
The design should protect the installed barrier during subsequent construction.
Product options are confirmed for your project. Photos do not identify the exact materials used unless stated.
A planning overview. The specified system and current technical data define the installation.
A qualified local radon professional establishes the testing and mitigation strategy.
Review the slab, walls, service entries and other measures in the complete design.
Check barrier continuity and complete the professional’s testing and verification plan.
A coating alone is not a substitute for radon testing or professional mitigation. Ask a qualified local professional to define the approach; we can review product documentation for the specified system.