Chimney Caps and Crowns: The Cheapest Leak Insurance There Is
The cap and crown are your chimney's roof. When they fail, water wrecks everything below — we repair and replace both in one visit.
The crown is the concrete slab that caps your chimney and sheds water down and away from the flue. The cap is the metal or stainless steel lid that sits on top, keeping rain, snow, embers, birds, and animals from entering the chimney itself. Both fail quietly — a hairline crack in the crown or a rusted cap screen — and water has often been seeping into the masonry for months or years before you notice anything wrong.
Chimney Pros repairs cracked crowns using flexible sealants that move with temperature changes, rebuilds crowns too damaged to seal, and installs stainless steel caps with spark screens. Because this work happens at roof level and most homeowners never see it, we photograph the flue and crown before and after every job so you know exactly what was done.
Warning signs it can't wait
- Water stains or damp spots on the interior chimney wall or surrounding ceiling drywall
- Hairline or web-like cracks visible on top of the chimney crown in sunlight
- Rust streaks or discoloration running down the outside of the chimney
- Pieces of concrete or mortar falling from the crown edge onto the roof
- A metallic smell or rust odor coming from the fireplace or flue
- Birds or squirrels nesting in or entering the chimney opening
- Daylight visible through gaps between the cap and the flue rim
- Chunks of the crown separating or the top layer spalling away in flakes
Seeing two or more at once? Stop using the fireplace and call — that combination usually means the system is struggling or unsafe to run.
What we handle
- Cracked crown — temperature swings and water freeze-thaw cycles break concrete over time
- Crown delamination — the top layer separates and peels away from the base
- Rusted cap screen — moisture and weather corrode steel, allowing debris and animals inside
- Missing or damaged spark arrestor — gaps let embers and nesting material enter the flue
- Chimney cap corrosion — rust holes develop in steel caps, compromising water shedding
- Crown-to-flue gap — settling or improper installation leaves an opening for rain and animals
- Spalling concrete — freeze-thaw cycles break the crown surface into loose chunks
- Flue blockage from nesting — sticks, mud, and animal debris restrict airflow and trap smoke
- Deteriorated mortar joints — gaps in the crown edge allow water to run into the masonry below
What cap & crown repair costs
Crown and cap work ranges from $250 to $600 depending on the repair type and whether you have a single or multi-flue chimney. Below are our flat-rate pricing options.
| Repair / service | Typical price |
|---|---|
| Stainless cap install (single flue) | $250 – $400 |
| Multi-flue / custom cap | $350 – $600 |
| Crown seal / resurface | $250 – $450 |
What you get
Stainless Caps That Last
Lifetime-warranty stainless steel with integrated spark screens — not the big-box galvanized cap that rusts in five years.
Water Protection
A sound crown and cap stop the number-one cause of chimney damage before it starts.
Animal and Ember Protection
Screens keep birds and raccoons out of the flue and stray embers off your roof.
Small Flat Prices
This is the cheapest work on the whole chimney — and the highest-value. Quoted flat, done in one visit.
Free top-of-chimney assessment
We photograph your crown, cap, and flashing from the roof and quote any needed work flat — free with any service.
How it works
Inspection and photography
We photograph the crown and cap from all angles in daylight, then use a camera on a rod to inspect the interior flue. This shows us the exact condition and rules out other problems.
Water test and damage mapping
We run water over the crown to confirm leaks and identify where water is entering. We mark all cracks, rust spots, and gaps so nothing gets overlooked.
Written estimate with before photos
We provide a flat, itemized quote before any work begins. The estimate includes the before photos so you see what needs fixing and why.
Safety setup and containment
We set up roof anchors, lay drop cloths to protect your home and landscaping, and position our HEPA vacuum to catch all dust and debris.
Crown or cap repair or replacement
We remove the old cap or prepare the crown, apply sealant or rebuild the concrete, and install a new stainless steel cap and spark screen if needed.
Final walkthrough and photo documentation
We show you the finished work at roof level via photos, point out the new cap or sealed crown, and confirm water now sheds away cleanly.
Cap & Crown Repair questions
Do I really need a chimney cap?
Yes. An open flue is a hole in your roof. Rain, snowmelt, nesting birds, and raccoons all enter freely, and an open flue also lets embers escape onto your roof. A cap with a spark screen is the single best value in chimney work.
Should I seal the crown or rebuild it?
Hairline and surface cracks get a flexible crown-coat sealant that expands and contracts with temperature swings. If the crown is crumbling, delaminating, or letting brick courses shift, it needs a full rebuild. The before photos make this clear.
How long do these repairs last?
Stainless steel caps carry a lifetime warranty. A flexible crown coat typically lasts 10 to 15 years, and a rebuilt cast concrete crown lasts for decades.
There's an animal in my chimney — can you remove it?
Yes, we handle removal safely and humanely, clean out nesting debris (a fire hazard), and cap the flue to prevent it happening again. If the animal is a chimney swift, those are federally protected and we'll explain the required timing window.
Who do I call to fix a leaking chimney crown?
Call Chimney Pros. We inspect, photograph the damage, and provide a flat quote before any work. We handle the crown seal or rebuild on the same job as the cap install, so the flue is fully protected.
Can I seal my chimney crown myself?
It's roof-level work with fall hazards and requires proper safety gear and anchors. A bad seal job also fails quickly because the sealant wasn't applied over clean, dry concrete. Professional sealing with a flexible coat is safer and lasts much longer.
Do plumbers fix chimney caps?
No. Chimney cap and crown work requires knowledge of flue sizing, spark arrestor codes, and water management specific to chimneys. We are licensed and insured chimney specialists.
What's the difference between a crown and a cap?
The crown is the concrete slab on top of the chimney that sheds water. The cap is the metal lid that closes the opening and keeps rain and animals out of the flue. Both can crack or corrode; both need repair or replacement.
Will you charge me a trip fee if I call for an estimate?
No. There are no trip fees. We provide a free, photo-documented estimate with same-week scheduling available, including same-day and emergency service.
Ready for a safer, cleaner chimney?
Same-week appointments, honest flat pricing, no scare tactics — and same-day emergency service when it can't wait. Licensed and insured.