PolyFlash 1C is a one-component, moisture-cure white flashing compound designed for sealing various roofing and waterproofing details, including walls, curbs, vents, roof drains, pitch pans and unusually shaped penetrations.
When combined with Polyglass’ lightweight PolyBrite Reinforcing Polyester, this flashing compound solves challenging flashing needs. The high-solid formulation of PolyFlash 1C provides high tensile strength and crack bridging capabilities. Polyflash 1C has minimal odor and can be applied in wet conditions and across an ambient temperature range of 40 to 122 F. This flashing compound offers waterproofing of <1.0 US perms and is UV-resistant when fully cured.