FlashSeal is a versatile and easy to use flashing repair system that, when dry, forms a flexible waterproof membrane.
It’s formulated for permanent adhesion to asphalt shingles, metal flashings, brick, and other chimney and roofing materials. Use FlashSeal to solve problem leaks around the base of chimneys, stacks, and vents. Repairing flashings that have been tarred over, split, cracked, or are in disrepair is easy with FlashSeal. It’s like installing a custom fit rubber boot at the base of the chimney. It remains permanently flexible and has a 7 year warranty when used with FlashSeal Reinforcement Fabric.