One of the most common places for chimney leaks is the flashing where your chimney meets the roof. A leaky flashing can cause all sorts of problems which require costly repair. When THC goes on service calls related to leaks in the chimney system, we often find that the source of the trouble is faulty flashing. Which is due to improperly installed roofing materials at the chimney. Flashing is normally made of sheet metal installed for the purpose of ensuring that the connection between the chimney and roof is watertight, but the effectiveness of flashing eventually expires. Leaks around the chimney are not always evident right away but they can cause serious structural damage. Moisture enters the roofing, the attic, and possibly the ceiling areas causing wood rot, roof damage, attic damage, and drywall damage in the ceilings. It’s a good idea to inspect the chimney area in the attic every six months to a year, to be sure that there are no signs of leakage. Examples that are listed above can let you know of a problem but having it inspected is the only way to know for sure that you have a problem.
THC can also fix flashings that have been tarred over, split, cracked, or are in disrepair. Flash Seal is formulated for permanent adhesion to asphalt shingles, metal flashings, brick, and other chimney and roofing materials. 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 Flash Seal Reinforcement Fabric. Use Flash Seal to solve problem leaks around the base of chimneys, stacks, and vents. It is also great for sealing around skylights.