Direct Answer
Chimney flashing repair cost depends on whether the flashing can be re-sealed or needs full replacement, the chimney's size, and whether a cricket is needed on a wide chimney. Re-flashing a chimney properly is more involved than a simple pipe boot repair because of the step and counter-flashing integration.
Chimney flashing has two parts: step flashing up the sides and counter-flashing cut into the mortar. A proper repair replaces both, sealed correctly into the brick.
Cost Factors
- Re-seal vs. full re-flash (re-seal is temporary; re-flash is lasting)
- Chimney size and number of sides flashing the roof
- Whether a cricket is needed on the uphill side
- Mortar joint condition for counter-flashing
When to Call a Roofer
Any water stain or leak near a chimney means the flashing needs inspection. Re-sealing is a short-term fix — proper re-flashing is the lasting answer.
How Beyond the Ladder Handles It
We re-flash chimneys with proper step and counter-flashing and add a cricket where the chimney width calls for one.
Related Questions
Can chimney flashing be repaired without re-flashing?
Re-sealing the existing flashing is a temporary fix that buys time. The lasting repair is re-flashing with new step and counter-flashing properly sealed into the mortar.
Why does my chimney need a cricket?
Wide chimneys trap water on the uphill side. A cricket (saddle) diverts water around the chimney instead of pooling it against the flashing. Not every chimney needs one, but wide ones should have it.