The MFM WindowWrap Flex PowerBond is a flexible, self-adhering, waterproofing tape that adheres in temperatures as low as 25 degrees F due to its PowerBond adhesive system. This system is comprised of a rubberized asphalt adhesive with a cross-laminated, polyethylene, crepe film that is laminated to the asphalt. This waterproofing tape is made to be strong, airtight, watertight, and sound-reducing, as long as it is applied to a clean and dry surface. The flex power bond wrap is capable of being stretched around arched windows, doorways, and other popular curved shapes due to the crepe film. This wrap can also be applied to plywood, OSB, masonry, aluminum, rigid vinyl, steel, drywall, and house wrap beneath the primary siding and creates a defense against water vapor and moisture. When installing flex-wrap, the silicone release liner must be removed before applying it onto a surface. This particular membrane must be covered within 90 days of application. MFM backs Window Wrap Flex Power Bond with a 15-year limited warranty.