Top Quality Foaming Adhesive High-End Wooden Door Special A1 Polyurethane Foam for Outdoor Caulking. Excellent Adhesion: Adheres to almost all building materials except polyethylene, silicone, and oily surfaces. High Thermal Insulation: Provides high thermal and acoustical insulation value for doors and windows. Mould and Water Proof: Cured foam is mould-proof, water-proof, and over paintable. Easy to Trim and Shape: Cured foam dries rigid and can be trimmed, shaped, and sanded. Fast Tack-Free Time: Achieves tack-free status in 5 to 10 minutes. Flame Retardant: Product features high density and flame retardant properties. Global Certifications: Passed strict quality tests with CE, ISO9001, ISO14001, SGS, and CNAS certificates. Flexible Customization: Offers full customization, minor customization, and customization from samples or designs.