A reliable, all-weather sealing tape built for demanding construction applications. Butyl 440 is a high-tack butyl rubber tape that bonds aggressively to a wide range of substrates and holds through extreme temperatures, moisture, and UV exposure. Where other tapes fail, butyl performs.
High-Tack Butyl Rubber Adhesive Butyl rubber's natural elasticity and aggressive tack create an airtight, watertight bond on contact — conforming to irregular surfaces, gaps, and overlaps without gaps or voids.
All-Weather Performance Remains flexible and adhesive in cold temperatures and resists softening in heat. Ideal for Canadian climate conditions where freeze-thaw cycles and temperature swings put standard tapes to the test.
Versatile Substrate Compatibility Bonds to concrete, masonry, metal, glass, wood, rigid insulation, vapour barriers, and most building wrap products — making it a go-to across multiple stages of construction.
Key Features
- Aggressive butyl rubber adhesive
- Flexible — conforms to uneven surfaces
- Resistant to water, air, and UV exposure
- Maintains adhesion across a wide temperature range
- Easy to handle and apply
Packaging
- 1/6" x 3/8" (50 ft. per roll) - 20 rolls per case (total of 1,000 ft.)
- 1/16 x 1/2" (50 ft. per roll) - 20 rolls per case (total of 1,000 ft.)
- 1/8 x 3/8" (25 ft. per roll) - 20 rolls per case (total of 500 ft.)
- 1/8 x 1/2" (25 ft. per roll) - 20 rolls per case (total of 500 ft.)
Ideal For: Window and door flashing, vapour barrier seams and laps, air barrier connections, HVAC duct sealing, metal roofing overlaps, and general construction waterproofing and air sealing applications.
The above information is for reference only, kindly refer to the manufactures technical data sheet for more details. 
