Roofing Projects · October 3, 2026
25-Year-Old Chimney Leak Forces Full Tear-Off in Wash Park, Denver
Roof Replacement · Denver, CO
A 25-year-old roof in Wash Park finally gave out at the chimney, so we tore it off completely instead of slapping on another patch. New GAF Timberline HDZ in Pewter Gray went down over fresh ice and water shield in the valleys. Two days, start to finish.
What did this roof look like before the tear-off?
This roof was 25 years old and past the point where patching does any good. Water had been getting in around the chimney for a while before the homeowner called us. Once we tore off the old roof, the deck was clean and ready for new GAF Timberline HDZ shingles in Pewter Gray, with fresh ice and water shield built into the valleys so the chimney stays dry.
BeforeAfter
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What we did
- Full tear-off of the old 25-year-old roof system
- Installed GAF Timberline HDZ shingles in Pewter Gray
- Added new ice and water shield in the valleys
- Completed the full reroof in two days
Why did this roof need a full tear-off instead of a chimney patch?
At 25 years old, this roof had earned a full replacement, not another patch. A chimney leak that old usually means the flashing and the shingles around it have both worn out, not just the seal at the chimney itself. Patch one spot on a roof that's already failing everywhere else and you buy yourself a few more months, tops. A full roof replacement in Denver gave this Wash Park home new ice and water shield in the valleys and a chimney detail built to last, instead of another stopgap.
Why GAF Timberline HDZ for a Denver roof?
GAF Timberline HDZ is a laminated architectural shingle that handles wind well and holds up to Front Range weather swings. We installed it in Pewter Gray here, a color that fits right in with the older brick and frame houses around Wash Park. The shingle is only half of it, though. What actually keeps a chimney from leaking again is tearing the old roof down to the deck, running new ice and water shield through the valleys, and setting every course to spec. That's what this crew did.
Is the yard safe for kids and pets after a tear-off like this?
We magnet-sweep the yard and driveway after every job, this one included. A full tear-off leaves a lot of old nails and debris behind, so that sweep isn't an extra step for us, it's just part of finishing the job. Homeowners in Wash Park and anywhere else we work across roofing in Denver get the same cleanup.
Frequently asked questions
Why was this Wash Park roof leaking at the chimney?
The roof was 25 years old, and at that age the flashing and shingles around the chimney had worn out right along with the rest of the roof. The leak was a sign the whole roof was due, not just that one spot.
How long did this roof replacement take?
The full tear-off and reroof took two days, start to finish, including the new GAF Timberline HDZ shingles and the ice and water shield in the valleys.
What shingle did you use on this job and why?
We installed GAF Timberline HDZ in Pewter Gray. It's a laminated architectural shingle that holds up well to Denver's wind and temperature swings, and the Pewter Gray color fit the Wash Park home.
What stops the chimney from leaking again?
New ice and water shield went in at the valleys during this reroof. Combined with a full tear-off and fresh flashing at the chimney, that's what keeps water from getting back in.
Is the yard left clean after a full tear-off?
Yes. We magnet-sweep the yard and driveway after every job to pick up stray nails, and we did the same here before leaving the Wash Park property.
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