Roof repair
Roof flashing repair
Flashing is the metal that seals the joints where a roof meets a wall, chimney, dormer or valley. Flashing repair replaces rusted, loose or caulk-patched pieces with properly lapped metal so water is shed rather than sealed out — the only approach that lasts.
- Typical time
- Half a day to a day.
- Repair or replace
- Replace failed flashing; don't rely on caulk.
In humid, salty coastal air, galvanized flashing rusts and sealant dries out in a few summers. Many leaks around chimneys and second-story walls come from flashing that was reused or smeared with roof cement during a past repair.
Correct flashing is layered: step flashing under each shingle course, counter-flashing over it, and a cricket behind wide chimneys so water doesn't pool.
Roof Flashing Repair at a glance
- What it is
- Flashing is the metal that seals the joints where a roof meets a wall, chimney, dormer or valley.
- Service category
- Roof Repair
Signs you need leaking flashing help
- Leak at a chimney, wall or skylight
- Rusty or loose metal
- Globs of roof cement or caulk at joints
- Stains on the wall below a roof-to-wall joint
Quick answers
Roof Flashing Repair: the short version
How long roof flashing repair takes
Half a day to a day.
When leaking flashing can wait, and when it can't
Soon — flashing leaks rot decking and framing.
Fix or replace leaking flashing?
Replace failed flashing; don't rely on caulk.
Why leaking flashing happens
Rust in humid coastal air, dried sealant, reused flashing.
The work
What the roofer does
- 1
Remove
Shingles around the joint are lifted and old flashing removed.
- 2
Replace
New step, counter or valley flashing installed with correct laps.
- 3
Reseal and shingle
Shingles reinstalled; only minimal sealant used where designed.
What moves the price of roof flashing repair
Driven by location, masonry work and material.
- Location (chimney, wall, valley)
- Masonry work for counter-flashing
- Material (galvanized, aluminum, copper)
- Siding removal at walls
Roof Flashing Repair: common questions
Can flashing be repaired with caulk?
Only as a temporary measure. Caulk fails in the sun within a season or two; flashing should shed water by overlapping, not rely on sealant.
What is a chimney cricket?
A small peaked structure behind a chimney that diverts water around it. Chimneys wider than about 30 inches generally need one.
Service area
Roof Flashing Repair across the Golden Triangle
Related
Services often paired with roof flashing repair
Roof Leak Repair
Roof leak repair finds where water is actually getting through — usually flashing, a pipe boot, a valley or wind-lifted shingles — fixes that entry point, and replaces any wet or rotted decking and insulation below it.
Learn more
Skylight Leak Repair
Most skylight leaks come from failed flashing or seals around the unit, not the glass.
Learn more
Pipe Boot & Roof Vent Repair
A pipe boot is the rubber collar that seals plumbing vent pipes through the roof.
Learn moreGuides
Reading on leaking flashing
Call about leaking flashing
Rust in humid coastal air, dried sealant, reused flashing.