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WindowWrap® Flex PowerBond™ is a 70 mil flexible waterproofing tape for windows, doors, and building joints. It features an exclusive, patented* PowerBond™ adhesive system that aggressively adheres in temperatures as low as 25°F.

With proper application, WindowWrap® Flex PowerBond™ will prevent water leaks, air and insect infiltration, and reduce noise. It is a self adhered membrane consisting of a rubberized asphalt adhesive which is laminated to cross-laminated polyethylene crepe film. The crepe film allows WindowWrap® Flex PowerBond™ to be stretched around arched windows, doorways and other popular curved shapes.

  • Cross-laminated polyethylene crepe film allows exceptional stretch and durability

  • Rubberized asphalt adhesive remains flexible over a wide temperature range and adheres in temperatures as low as 25°F

  • Adheres aggressively to plywood, OSB, masonry, aluminum, rigid vinyl, steel, drywall and house wrap

  • Impermeable to water vapor, moisture, insects and air

  • Self-seals around nails and other mechanical fasteners

  • Easy to remove release liner for quick installation

  • May be left exposed for 90 days

WindowWrap® Flex PowerBond™ has many intended uses including:

  • Beneath exterior siding as a backup waterproofing system

  • To flash windows and doors in new or remodeling construction

  • To seal joints, vents and other exterior openings

  • Conforms to arched and curved windows and doorways

  • May replace kraft paper, metal flashing, foam sealants, house wrap and tapes where extra protection is needed

WindowWrap® Flex PowerBond™ comes with a 15-Year Limited Warranty.

WindowWrap® is protected by US Patent Nos. 6,479,119 and 6,627,017. PowerBond is protected by US Patent No. 8,603,629.

WindowWrap® Flex PowerBond™

ProductProduct IDSizeUnits/CartonCarton Wt.
WindowWrap Flex PowerBond4421212” x 50’352 lbs
442099” x 50’452 lbs
442066” x 50’652 lbs

WindowWrap® Flex PowerBond™ 12” is a one pallet minimum order product.