Use a chisel to remove any hardened roofing cement.
Roof flashing repair chimney.
Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right.
For most chimney flashing you will more commonly see two piece chimney flashing.
Ensure the chimney s base flashing is in proper order secured to the roof as the manufacturer or mason recommends beneath the shingles.
With the primary flashing and counter flashing connected this differential movement could potentially allow strain to develop in the mortar or pull at fasteners in the roofing assembly.
By placing metal both under and over your shingles covering the gap between chimney and roof we mask any potential points where leaking can occur.
Roof decks and chimney move independently as they are heated by the sun.
Roof flashing repair costs 200 to 500 on average for skylights chimneys and vents.
Completely replacing the flashing costs 400 to 1 000 which includes resealing and replacing the surrounding shingles.
Get free estimates from chimney sweeps near you or view our chimney repair cost guide below.
Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing.
New chimney flashing and chase cover.
Roof flashing repair cost.
The roof deck and the brick chimney are physically separated by the chase.
Bend a piece of cap flashing to fit around the top corner of the chimney and add the cap flashing across the back of the chimney.
Minor chimney repairs cost 200 to 700 on average to fix flashing cracked flue tiles or mortar joints sealing leaks or replacing a chimney cap.
Old fireplace brick chimney.
Apply a generous amount of roofing cement behind the flashing.
Clean any leaves or other debris out of the gap between the flashing and chimney.
Cut the side cap flashing to fit the angle of the roof so it overlaps each lower cap flashing at least 2 in.
If you were not provided with base flashing you can install step flashing up the side of the chimney.
Use masonry nails or screws to reattach the flashing tight against the chimney.
Extensive chimney repairs cost 1 000 to 3 500 for crown replacement brick spalling rebuilding parging or fixing a leaning stack.
We install metal around the area where your chimney meets the roof.
Use special masonry caulk to seal the joints between the flashing and the chimney.
