Chimney Repair in Colorado
Need chimney 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
Chimney repair covers the fixes that keep a structurally sound chimney working safely — repointing eroded mortar, replacing spalled bricks, patching crowns, resealing flashing, and restoring flue integrity. Caught early, almost every chimney problem is a repair; ignored, many become rebuilds.
Colorado is hard on chimneys. Our freeze-thaw cycles pry open every hairline gap, our sun bakes sealants, and Front Range winds drive rain into joints horizontally. The repairs we do are matched to those conditions — the right mortar mix, breathable water repellents, and metals that handle the altitude sun.
Signs You Need Chimney Repair
- Crumbling or sandy mortar joints you can scratch out by hand
- Brick faces flaking or popping off (spalling)
- White staining (efflorescence) on the exterior masonry
- Pieces of flue tile or mortar appearing in the firebox
How We Approach Masonry Work
Assessment with photos — you see exactly what's failing and why before any quote.
Failed material is removed to sound substrate; nothing gets buried under patches.
Repairs use matched mortar and units, tooled to your chimney's original profile.
The work area is protected with water repellent so freeze-thaw doesn't restart the cycle.
Why It Matters for Safety
A deteriorating chimney is a falling hazard above and a fire pathway within: open joints can expose framing to flue heat, and loose masonry sheds onto roofs and walkways. Structural chimney work isn't cosmetic — it's the building's tallest, heaviest, hottest component being kept trustworthy.
Maintenance Tips From Our Technicians
- Glance over exterior masonry each fall; sandy joints and flaking faces are early flags.
- Keep sprinklers from wetting the chimney — chronic wetting accelerates every failure mode.
- Re-apply breathable water repellent roughly every ten years.
- Address single-brick problems as single-brick problems; they don't stay that way.
Why Homeowners Choose Donovan Chimney & Fireplace
Since 1998, Donovan Chimney & Fireplace has served the Front Range with one operating principle: show the customer the evidence, price the work in writing, and do it right the first time. Our technicians are trained, insured, and background-checked — and because we're open 24/7, the urgent version of this problem always has someone answering.
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Frequently Asked Questions
How do I know if my chimney needs repair or replacement?
It comes down to structure. If the foundation and core walls are sound, targeted repair almost always makes sense. If the stack is leaning, extensively cracked, or the inner walls have failed, partial or full rebuilding is the honest recommendation — and we'll show you the evidence either way.
Can chimney repairs wait until spring?
Small mortar gaps become big ones over exactly one winter of freeze-thaw. If water can get in, repairing before the freeze season genuinely saves money.
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 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.