Sealing Materials & Radon Barriers
Radon barrier membranes certified by diffusion coefficient per ISO/TS 11665-13. Includes bituminous membranes (SBS/APP), HDPE/LDPE polyethylene membranes, liquid-applied gas barriers, projected polyurethane systems, crack and joint sealants, and pipe penetration seals. Essential in new construction and effective when combined with active depressurization, though not recommended as standalone solution.
Application
Intervention Type
Radon barriers and membranes reduce both diffusion and convection, providing passive protection when properly installed. From bituminous sheets to polyethylene membranes and projected systems.
Browse certified products from manufacturers including Danosa, Soprema, and Visqueen. Best used as complementary measures with active depressurization systems.
Product Types
Bituminous Membranes (SBS/APP)
Heat-weldable or self-adhesive membranes with reinforcement for under-slab installation
Popular Brands:
- •D = 1.6-2.4×10⁻¹² m²/s diffusion coefficient
- •Heat-weldable or self-adhesive
Polyethylene Membranes (HDPE/LDPE)
Flexible sheet barriers for crawlspace and under-slab applications
Popular Brands:
- •0.4-1.2mm thickness
- •Requires calculation per building codes
Projected Systems
Seamless polyurethane or polyurea applications eliminating joints
- •96% reduction achieved in CSN trial
- •~3mm thickness typical
Crack Sealants
Elastic polyurethane or MS polymer for active cracks and joints
- •Elastic polyurethane
- •MS polymer options
Structural Repair Materials
Non-shrink mortars and epoxy resins for static crack repair
- •Non-shrink mortars
- •Epoxy resins
Penetration Seals
Collars and sleeves for pipe and conduit passages through barriers
- •Collars and sleeves
- •For pipe passages
Perimeter Bonds
Specialized tapes for membrane-to-wall transitions
- •Specialized tapes
- •Membrane-to-wall transitions