How flashing is supposed to shed water
Step flashing is woven into the roof courses along the sides of the chimney. Counterflashing covers the upper edge of those pieces on the chimney face. Water should step down the laps, not rely on a surface bead of sealant. Behind a wide chimney, a cricket or saddle turns roof runoff around the stack instead of letting it pond.
Why storm rain finds this joint
Wind-driven rain hits the uphill side and the vertical face, not just the shingles. Salt air thins exposed metal. Old tar patches shrink and split. A reroof that reused bent flashing or left counterflashing uncut can leak on the first hard storm. The stain indoors may appear hours later and several feet from the entry point.
If the mark only appears with a particular wind direction, write that down before the visit. That timing is more useful than a photo of the stain alone.
Flashing, crown, cap, and masonry
A flashing repair does not close a cracked crown, replace a missing cap, or fill open mortar. Those are separate scopes. Start from chimney leak repair if you only know that water appears after rain. Waterproofing does not reconnect lifted metal.
What the estimate visit sorts out
- Which layer failed: step flashing, counterflashing, cricket, or sealant-only patches
- Whether roof-field work belongs with a roofer
- Corrosion, mixed metals, and the condition of the masonry the counterflashing cuts into
- Whether a framed chase uses a different roof-to-siding detail than masonry
Symptoms that usually mean flashing, not the crown or cap
A ceiling or wall stain beside the chimney after rain, rust at the roof line, lifted metal, or a tar smear that keeps splitting are flashing clues. Water in the firebox after a still shower more often tracks to a cap or crown. Rust streaks down framed siding belong on chase cover repair. Open mortar is tuckpointing on the masonry request page. If you only know that it rains in, start at leak diagnosis.
When to call (754) 328-2421 for chimney flashing repair
Call when the wet mark sits beside the stack, appeared after a reroof, or only shows with wind-driven rain. Leave the fireplace unused if the ceiling is still wet. Stay off a wet Florida roof. Put the ZIP, the roof covering if you know it, and which way the last storm blew on the form. A technician names whether the chimney company owns the counterflashing, a roofer owns the shingle field, or both trades are in play.
Florida rain that finds the roof-to-chimney joint
Wind-driven cells on the Atlantic and Gulf hit the uphill cricket and the vertical face, not just the shingles. Tile and barrel roofs hide a different lap than a later shingle reroof that reused bent metal. A Pensacola Gulf-band leak and a Miami Biscayne stain can share the same physics and still need different metal. Salt thins exposed counterflashing. Caulk is not that overlap.
Ceiling stain after rain: why it usually starts at flashing
A ceiling or wall mark beside the chimney after rain is the classic flashing clue. Water enters at the roof joint, travels the chimney face or the decking, and shows indoors feet from the opening. A dry firebox does not rule flashing out. Water sitting in the firebox after a still shower more often tracks to a cap or crown. Orange streaks down framed siding belong on chase cover repair.
If you only know that it rains in, start at leak diagnosis. Recessed mortar is chimney tuckpointing, requested on masonry. The visit names the path. The stain does not.
Step flashing versus counter flashing on a Florida roof
Step flashing is woven into the roof courses beside the chimney. It belongs with the roof covering. Counterflashing is let into a mortar cut on the chimney face and folded down over those step pieces so water sheds by geometry. The two layers overlap without being fastened to each other, because the roof deck and the stack move separately. A bead of tar or caulk across that joint is not that overlap.
A factory-built chase uses a different roof-to-siding detail than masonry. Tile, barrel, and a later shingle reroof that reused bent metal each hide a different lap. Wind-driven Florida rain finds the place those layers were merged instead of lapped. The technician should say whether the chimney company owns the counterflashing, a roofer owns the shingle field, or both trades are in play.
What to photograph before you call (754) 328-2421
From inside: the first ceiling or wall stain, and whether the firebox stayed dry. From the ground or a second-story window: rust at the roof line, lifted metal, a black tar smear, and whether the stack is brick or a sided box. Write the ZIP, the roof covering if you know it, and which way the last storm blew. Stay off a wet Florida roof. Call (754) 328-2421 or request the free estimate with those notes. A technician names the failed lap and quotes that joint, not a full reroof.
Diagnosis and repair steps at the roof joint
The visit follows a fixed order. First place the wet mark: ceiling or wall beside the stack, water in the firebox, or orange streaks on framed siding. A mark beside the stack starts here. Standing water in the firebox after a still shower more often belongs on a cap or crown. Orange streaks down a sided box belong on chase cover repair.
Next the technician reads the laps from safe access: step flashing in the roof courses, counterflashing on the chimney face, and any cricket behind a wide stack. A tar smear is noted. It is not the repair. Then the quote says whether the chimney company owns the counterflashing, a roofer owns the shingle field, or both trades are in play. Open sandy joints are tuckpointing, requested on chimney masonry.
Idle Florida months do not close this seam. A fireplace that never burned can still stain the ceiling after a wind-driven cell. Smoke smell with a dry ceiling is a chimney sweep or fireplace cleaning, not flashing. Scratching in the flue is animal removal. An unused flue before the first cool evening can start on chimney maintenance. A shared stack on an occupied building starts on commercial chimney repair. Call (754) 328-2421 with the ZIP and which rain last grew the mark.