Reseal Chimney Flashing

Expert advice on how to repair roof flashing and chimney flashing prevent ice dams and solve other roof flashing problems.

Reseal chimney flashing.

Check flashing around the base of the chimney along the walls and around the plumbing vents. Chimney flashing is a sheet of metal installed around the base where the roof and chimney meet to prevent leaking. Chimney flashing prevents water leaks from seeping through the roof and creating water damage in the roof and down into the ceiling. Look for areas where water might be getting in gaps bent flashing holes made by roofing nails etc.

Chimney flashing seals the void between the roof and the chimney but often times leaks. Chimney flashing repair cost. The l shaped flashing that protects the joint between a roof and a chimney can sometimes pull away from the chimney especially if it s only held in place by roofing cement. Chimney flashing repair costs 200 to 500 to fix and reseal.

Begin correcting the problem by removing any leaves or debris from the void and then scraping or chiseling the dried roofing cement off of the bricks so the. If you discover that you have water leaks occurring near or around your chimney then it may be time to replace the roof flashing and reseal around the chimney. Over time water erodes away the watertight finish that sealed the flashing or the flashing literally rusts away from the roof. Other problems can occur with the flashing that may cause leaks and fixing it isn t impossible.

Flashing is your main defense against leakage so you want to make sure it is securely fastened and that there are no holes or gaps. The average cost to replace chimney flashing is 300 to 1 500 depending on the chimney type. Clean off any dirt or debris from the surfaces near the flashing edge where it meets the shingle or chimney surface step 2 re apply new caulk using your caulk gun to apply new polyurethane caulk along the edges of the cap flashing where it meets the mortar of the chimney. Most often when a chimney leaks the leak originates in that spot.