Chimney Flashing Repair in Colorado
Need chimney flashing repair? Donovan Chimney & Fireplace serves Denver, Fort Collins & Colorado Springs with 25+ years of experience. Family-owned since 1998 · Licensed & insured · Open 24/7.
About This Service
Flashing is the layered metal system that seals the joint where your chimney exits the roof — and that joint is the single most common leak point on Colorado homes. When flashing lifts, splits, or its sealant fails, water follows the chimney down into ceilings and walls, often far from where the stain finally shows.
We repair flashing properly: re-securing and resealing step and counterflashing, replacing failed sections, and cutting counterflashing into the mortar joint the way it should have been done originally — not smearing roof tar over the problem, which is the failed 'repair' we most often find.
Signs You Need Chimney Flashing Repair
- Ceiling stains near the chimney after rain or snowmelt
- Visible gaps, lifted metal, or old tar at the roof-chimney joint
- Rust trails on the roof below the chimney
- Water in the attic along the chimney's path
Our Flashing Method
Leak path is traced and confirmed — water testing when needed — before metal is touched.
Step flashing integrates with the roofing; counterflashing is ground into the mortar joint.
Joints are sealed with masonry-grade sealant, not surface tar.
We water-test the finished assembly so you're not waiting for the next storm to find out.
Why It Matters for Safety
Water entering at the roofline doesn't announce itself — it saturates framing and insulation quietly, and by the time a ceiling stain appears, damage has been accumulating for months. Sound flashing is structural protection for everything under the roof deck.
Maintenance Tips From Our Technicians
- Scan ceilings near the chimney each spring; stains mean start tracing now.
- Keep tree debris from damming water above the chimney's roof joint.
- Replace flashing during any reroof — reusing old flashing under new shingles is false economy.
- In snow country, a cricket behind wide chimneys prevents the classic ice-dam leak.
Why Homeowners Choose Donovan Chimney & Fireplace
Donovan Chimney & Fireplace has been doing this work across Colorado since 1998 — long enough to have seen every version of this problem and every shortcut that fails. We diagnose before we quote, we document what we do, and our 24/7 line means you're never waiting until Monday with a chimney question that can't wait.
Related Services
Frequently Asked Questions
The roofer says it's the chimney and the chimney guy says it's the roof — who's right?
This is exactly why we do water testing and trace leaks to their actual entry point before repairing anything. Flashing sits at the boundary of both trades, and we work on both sides of it.
Why does tar-based flashing repair keep failing?
Roof cement isn't flexible enough for the differential movement between a masonry chimney and a wood-framed roof — Colorado's temperature swings crack it within a season or two. Mechanical metal-in-mortar flashing moves with the structure.
Are you licensed and insured?
Fully. Donovan Chimney & Fireplace carries the licensing and insurance this work requires, and certificates are available on request — something we recommend asking of any company that climbs on your roof.
Request a Free Estimate
We're open 24/7. Fill this out and we'll get right back to you — or call 720-310-3798.
Book Chimney Flashing Repair Today
We serve Denver, Fort Collins, Colorado Springs, and every community around them — see the full service area list.
Emergencies don't keep business hours and neither do we: our phone answers 24 hours a day, 7 days a week.