Polyguard BBLF is an all-purpose, fluid-applied flashing installed with an application gun and trowel used to create a weather-resistant, fully adhered air barrier system around window and door installations. It was developed utilizing Silyl Terminated Polyether Technology (STPE). It comes in a 20oz “sausage tube” requiring a “sausage gun” to apply. Can be left exposed to UV light for up to 9 months.

• Creates an air-tight seal that resists harsh elements. Permanently flashes and seals around building penetrations.

• Superior adhesion to concrete, metal, CMU block, untreated OSB or plywood sheathings, gypsum, and ICF.

• Shore A Hardness of 55-65 with Tensile Strength of 300-350 PSI, Elongation of 200-250%, and 100% solids content.

• Bonds to multiple substrates in either wet or dry conditions. Tack-free in 30-45 minutes. Cures in 8+ hours depending on conditions.

• Complies with ASTM E84, AAMA 714-715, and NFPA 285 under many wall assemblies. Application ambient and surface temperature range of 40-100°F.