Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right.
Fix roof flashing around chimney.
Whether the problem is roof repair flashing replacement or.
Use a chisel to remove any hardened roofing cement.
Use masonry nails or screws to reattach the flashing tight against the chimney.
Roof shingle over step flashing.
If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.
The following are the most common reasons for leaks around chimneys.
Use special masonry caulk to seal the joints between the flashing and the chimney.
Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing.
For tile roofs the underlayment which keeps water out may be deteriorated.
Flaws in the roofing material above or adjacent to the chimney there may be a broken slate or tile nearby that is causing a leak.
To repair loose roof chimney flashing.
To do this ask an assistant to observe the area of the ceiling near the chimney and run water along the sealed gaps of the.
Water test the roof at the area of the chimney using a garden hose.
Clean any leaves or other debris out of the gap between the flashing and chimney.