Polyken 626-35 Foilastic Flashing Tape - PREMIUM 35 MIL Applications Used to seal tile underlayment and flashing, gutters, roof valleys and eaves, chimneys and vents, rooftop duct systems, sheet metal repairs on mobile homes, metal buildings and trailers. Features & Benefits Consists of a butyl-based adhesive which exhibits excellent adhesion to most metal and wood surfaces. · Compatible with most caulking and sealants - does 0t react to most solvent-based solutions. · Provides long-term weather-tight seal to prevent moisture, air, and vapor penetration.· Easy-to-remove PE release liner. · Paintable aluminum backing. · Flexible at low temperatures & stays pliable to maintain a tight seal. · 0 cracking over 1/4" at mandrel at 0°F.· Protective aluminum backing allows for indefinite UV exposure. · This product is covered by 12-year limited limited warranty. Please see warranty for details.