Chimney Flashing Installation in Colorado
Chimney Flashing Installation by Donovan Chimney & Fireplace: honest diagnosis, written pricing, and quality work across the Colorado Front Range. Family-owned since 1998 · Licensed & insured · Open 24/7.
About This Service
New flashing installation is the permanent answer when existing flashing was never done right, when a reroof is happening, or when repeated repairs prove the old system can't be saved. It's a two-part metal system — step flashing woven into the shingles, counterflashing let into the chimney's mortar joints — and both parts have to be right.
We install complete flashing systems in galvanized, aluminum, or copper, with counterflashing ground into the mortar joint and sealed, saddle (cricket) flashing behind wide chimneys where snow piles, and details matched to your roofing material from asphalt to metal to tile.
Signs You Need Chimney Flashing Installation
- A reroof is planned or underway (the ideal time)
- Existing 'flashing' is just surface-mounted metal and caulk
- Wide chimney on the downslope side with no cricket behind it
- Chronic leaks despite multiple flashing repairs
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
What's a cricket and do I need one?
A cricket is a small peaked diverter built behind the chimney that splits water and snow around it instead of letting it pile against the back. Building codes require one behind chimneys over 30 inches wide — and in Colorado snow country, they're valuable even below that.
Should flashing be replaced during a reroof?
Almost always yes. Reusing aged flashing under a new roof means the joint fails decades before the shingles do — and then the new roof gets opened up to fix it.
How soon can you come out?
Routine appointments are usually available within the week, and our 24/7 emergency line handles the situations that can't wait. October and November book fastest — spring and summer scheduling is easiest.
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 Installation 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.