BOSS® 334 Window & Door Minimal Expanding Foam is a one-component, ready to use polyurethane foam, formulated to seal the gap around window and door frame and the rough opening. BOSS® 334 expands to generate an effective seal, and when used properly is proven not to distort or bow window and door frames. BOSS® 334 will achieve a Sound Transmission Class (STC) of 58 when applying it in accordance with ASTM C-919 “Standard Practice for use of Sealants in Acoustical Applications”.
FEATURES & BENEFITS
• AAMA 812-04 approved • CFC propellant free • Excellent adhesion on most substrates (except Teflon, PE and PP) • High thermal and acoustical insulation • Very good filling capacities • Excellent mounting capacities • Excellent stability (no shrink or post expansion) • Very precise application due to the foam gun system • Low pressure build, reducing the chance of bowing • VOC Compliant • Installing of window and door frames • Filling of cavities • Sealing of all openings in roof constructions • Creation of a soundproof screen • Mounting and sealing of window and door frames • Connecting of insulation materials and roof constructions • Application of a soundproofing layer on motors • Improving thermal isolation in cooling systems • Density: 1.56 lbs./ft³ • Thermal Conductivity: 0.22 - 0.26 Btu-in/hr-F-ft² • R Value: 3.8 - 4.8 per inch • Tack Free (1” bead): 8 minutes (68°F & 65% RH) • Fully Cured (1” bead): 12 hours (68°F & 65% RH) • Cuttable (1” bead): 1 hour (68°F & 65% RH) • Tensile Strength: 15 psi • Shear Strength: 7 psi • Elongation: 20% • Yield/24 Oz. Can: 11 gallons freely foamed • Theoretical Yield - 24 oz. 1/4” bead: 4300 ft. • Theoretical Yield - 24 oz. 1/2” bead: 1030 ft. • VOC: 166 gr./liter • Service Temperature: -40°F to 200°F • Application Temperature: 40°F to 115°F
