
What the Job Involved
- Problem:
- Chimney leaking from reused step flashing, no kick-out flashing, and old step-style counter flashing; rotted decking underneath
- Work performed:
- Full flashing rebuild, deck repair, new ice and water shield, custom-bent flashing, ground-in continuous counter flashing, plus miscellaneous repairs across the roof
- Time on the roof:
- About five hours
- Cost:
- Around $2,400
- Warranty:
- 15 years
- Turnaround:
- Within one business day of the call
How It Went
We got the call from a new homebuyer right after their home inspection. The inspector flagged the chimney flashing, and the buyer needed it handled before closing. We had it done within one business day.
The chimney was leaking for a few reasons, and they stacked up. The step flashing had been reused from a previous roof instead of replaced. There was no kick-out flashing at the outside corners, so water ran down the wall instead of being thrown back onto the roof. And the counter flashing was the old step style, cut and stacked piece by piece, which we stopped using years ago because it has too many places to fail.
We took it all off. Every piece of step and base flashing and all the shingles around the chimney. Once the metal was off we found what usually hides under a chimney like this: rotted decking. We cut back to solid wood and replaced it. Then new ice and water shield, wrapped properly up the chimney, and new custom-bent flashing on top of it.
For the counter flashing, we ground a new joint into the chimney masonry and installed a single continuous piece. That does two things. It seals better than stacked steps, and it hides the shadow marks the old step flashing left behind on the brick, so the finished chimney looks like it was always done right.
While we were up there we knocked out a handful of small repairs elsewhere on the roof. All in, about five hours. Fifteen-year warranty on the chimney.
How This Chimney Flashing and Deck Repair Job Was Done
- 1The chimney as we found it, with the original flashing still in place.
- 2The metal comes off, and the condition of what it had been covering starts to show.
- 3The decking beside the chimney has rotted through. This is what the flashing had been hiding.
- 4The failed boards are cut back to sound timber, which at this point means an opening straight into the roof space.
- 5New decking goes in and the structure is made good before anything is laid back over it.
- 6Finished — new metal on a repaired deck, with the shingles carried back around the base.






























