US Energy Products 500 sqft Aluminum Foil Barrier Insulation Sauna Non Perforated Solid 8 Mil Reinforced Aluminum Vapor Barrier

4ft x 125ft (500sqft) Solid Vapor Barrier by US Energy Products Strongest and Heaviest Radiant Barrier Made 16lbs per roll Product Description double-sided reflecting aluminum metalized film with polyethylene woven reinforcement Weight 32 lbs per 1000 sq ft roll (this is 500sqft) Tensile/Tear Strength Length: 21.49 Pounds Force Width: 24.56 Pounds Force ASTM D226 Pliability 70°F±5°F & 50±5% Relative Humidity No Cracking or Delamination ASTM C1313-05 Adhesive Performance 180°F±5°F & 50% Relative Humidity No Bleeding or Delamination ASTM C1313-05 Flame Spread & Smoke Class A/ Class 1 0 Flame Spread, 5 Smoke Development ASTM Method E84-10 Resistance to Fungi PASS - No Growth ASTM C1338-08 Permeability 6.29 Perms ASTM E96-05 Thermal Properties EMISSIVITY: 0.05 REFLECTIVITY: 99% ASTM C1371-04a