You have successfully added an item to your cart. View Cart


1 Gallon of Flashseal Elastomeric Flashing Sealant White - 300050

Item: COP24637
Product Details
  • Size: 1 gallon
  • Color: White
  • Stops leaks around chimney, stacks, and vents
  • Stays flexible over time
  • Easy brush-on application
  • Soap and water clean-up
  • Coverage rate: Approx. 28 linear feet
  • Application temperatures: Minimum 45° F

1 Gallon of Flashseal Elastomeric Flashing Sealant White - 300050

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. It is also great for sealing around skylights. 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. For complete chimney protection, we recommend waterproofing the chimney and sealing the chimney crown.

WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to

7-Year Warranty