My DIY Center - Viper CSX Radiant Radon/Moisture Barrier - 90 Mil (4' x 125') Super Thick, Heavy Duty Polyethylene Film, Cross-Woven Sheeting for Insulation & Crawl Spaces - - Amazon.com
Stego Tape, Red: Radon Supplies
Radon Barrier Non-reinforced 80m² Roll | MD O Shea & Sons
RADEX Radon Tape For Radon Membranes | Laydex Building Solutions