Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
Gas fireplace serviceLevel 1 sweep and inspection to the NFPA 211 annual standard - flue, crown, cap, and flashing checked and photographed
Chimney sweep logs do not sweep chimneys. They loosen some creosote - which then falls where a brush and vacuum still have to collect it.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
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Before
After
Before
After
Before
AfterHow Much Does Chimney Cap & Crown Cost in San Carlos?
In San Carlos, a new chimney cap typically runs $225 to $650 installed, while chimney crown repair or rebuild usually costs $400 to $1,400. If your masonry needs both at once, a common combined job lands around $700 to $1,800, depending on the flue count, cap material, and how much of the crown has to be removed and re-poured.
Those numbers reflect what we actually quote across San Carlos homes, from the older bungalows near Laurel Street to the hillside houses above Brittan Avenue where wind driving off the ridge puts more stress on crowns and caps than you’d get on a sheltered lot. If you need a concrete answer for your roof this week, call (833) 620-0350 for a free estimate. We’ll measure the flue, look at the crown, and give you a real number.
Chimney Cap & Crown Cost Breakdown (2026)
Chimney caps and crowns are two different components, and getting the terminology straight helps you read a quote. The cap is the metal hood at the top of the flue that keeps rain, animals, and debris out and sparks contained. The crown is the concrete or masonry slab on top of the chimney structure that sheds water away from the flue and the brickwork below it. Either one can fail on its own.
Here’s what San Carlos homeowners are paying in 2026:
- Single-flue stainless steel cap, installed: $225 – $475. We size and fit Gelco caps to the actual flue, so it seals properly rather than sitting loose over a gap.
- Multi-flue or custom cap (two or more flues): $450 – $650. Custom-fabricated caps cost more because the dimensions are built to the chimney, not pulled off a shelf.
- Decorative or copper cap: $550 – $1,100. Copperfield copper caps fall in this range depending on size and whether the whole chimney or just the flue gets covered.
- Minor crown repair and re-sealing: $400 – $750. Best for hairline cracks and surface spalling that haven’t reached the flue.
- Full crown rebuild or re-pour: $850 – $1,400. Needed when the crown has cracked through, separated from the flue, or is no longer shedding water.
- Cap and crown together: $700 – $1,800. The most common combined ticket, since a failed crown usually means the old cap isn’t far behind.
- Flue tile repair alongside crown work: $300 – $900 additional, if the top course of tile has spalled and needs replacing.
What pushes a job toward the top of these ranges? Mostly height and access. A single-story ranch with easy roof access is a different job than a steep-pitch hillside roof where we have to set up fall protection before anyone touches the crown. A crown with several flues is more surface area to form and pour. And if the crown has been leaking for years, we sometimes find rotted framing or deteriorated flue tile underneath, which adds work that wasn’t visible from the ground.
What keeps a job in the lower range? Catching a hairline crack early, staying with a standard stainless cap instead of copper, and having us look at the whole system at once so we’re not making two trips. Our Chimney Cap & Crown in San Carlos service page covers the materials and installation methods in more detail.
What Affects Chimney Cap & Crown Pricing in San Carlos
- How many flues the cap covers. A single-flue fireplace takes a standard cap. A chimney serving the fireplace plus a furnace or water heater flue needs a larger or custom-built cap, and the price steps up accordingly.
- Roof pitch and height. San Carlos has plenty of homes on sloped lots off Crestview and Highland where the roof is steep and high. Setup and safety costs go up, and that shows in the quote. It’s a fair line item, not padding.
- Cap material. Standard stainless is the sensible everyday choice. Copper is beautiful and lasts decades, but it costs more up front. Galvanized caps are the cheapest and the first to rust, which is why we don’t recommend them for a coastal-influenced climate like ours.
- Condition of the crown and the masonry below it. A crown that’s cracked but still anchored is a repair. A crown that’s separated, crumbled, or letting water into the brick is a rebuild. The gap between those two jobs is several hundred dollars.
- Whether the flue tile is sound. When the crown has been leaking, the top flue tile often spalls from freeze-thaw and moisture. If we can resurface a damaged liner with HeatShield rather than pulling and replacing the whole thing, we will, and that saves real money compared to a full reline.
- Temperature and season. Crown work is concrete work. We’re not pouring a durable crown in cold, wet weather, and in San Carlos that means scheduling around our winter rain rather than fighting it. Spring and early fall are the sweet spot for crown jobs.
One more factor that’s specific to this area: our marine air and the occasional cold snap work together on masonry. Moisture soaks into a porous crown, then expands when it freezes, and the crack widens. A crown that would last 30 years in a dry climate can fail in half that time here if the original pour was thin or poorly sloped. That’s why we slope every crown we pour so water actually runs off instead of pooling near the flue.
How to Save on Chimney Cap & Crown
The biggest savings on cap and crown work comes from timing, not from shopping the lowest bid. A cracked crown that’s caught early is a $400 – $750 repair. Left alone through two more rainy seasons, it becomes a $1,400 rebuild with possible flue tile damage on top. Same chimney, different decade of neglect.
- Get the crown inspected before the rainy season. Late summer and early fall are the right window in San Carlos. A five-minute look at the crown during an annual sweep catches problems while they’re still small.
- Combine the cap and crown in one visit. If the crown is bad, the cap is usually the reason it got that way, or the next thing to fail. Doing both in one trip saves a second setup and often a second service call.
- Choose purpose-built components over generic ones. A properly sized Gelco cap or a Famco venting component costs a little more than a hardware-store substitute but lasts. Replacing a cheap cap every few years costs more over time than buying the right one once.
- Ask about HeatShield resurfacing before agreeing to a reline. When a damaged flue is involved, our chimney and venting services team can sometimes rehabilitate the existing liner with HeatShield ceramic resurfacing instead of installing a full DuraFlex liner. That’s a meaningful cost difference, and it’s a technically demanding job not every company offers.
- Get the estimate in writing and free. Call (833) 620-0350 and we’ll quote the cap, the crown, or both with line items, so you know what you’re paying for and why.
If you’d like to understand the parts before we arrive, our guide to chimney caps and crowns walks through what each piece does, and our overview of our chimney services shows the full scope we handle in-house.
FAQs – Chimney Cap & Crown Cost
How much does a chimney cap cost in San Carlos?
A standard single-flue stainless steel cap installed in San Carlos runs $225 to $475. Multi-flue or custom caps run $450 to $650, and copper caps land in the $550 to $1,100 range depending on size. Call (833) 620-0350 for an exact quote on your flue; estimates are free.
Is it cheaper to repair or replace my chimney crown?
A repair is cheaper when the crown is still structurally sound, typically $400 to $750 versus $850 to $1,400 for a full rebuild. The deciding factor is whether the crown has cracked all the way through or separated from the flue. If water is already getting past it into the masonry, a rebuild is usually the only fix that holds. Call (833) 620-0350 and we’ll tell you honestly which one you need.
Do I need both a cap and a crown?
Yes, and they do different jobs. A crown sheds water off the top of the chimney; a cap keeps rain and animals out of the flue and contains sparks. Most San Carlos homes with a failing crown need both, which is why we quote them together in the $700 to $1,800 range. Call (833) 620-0350 to schedule a combined estimate.
Can you install a chimney cap the same day?
Often, yes, when the cap is a standard size we carry and your flue dimensions are straightforward. Custom and copper caps take longer because they’re built to the chimney. Crown work is scheduled around weather since it involves concrete. Call (833) 620-0350 and we’ll tell you what’s realistic for your roof.
How long does a new crown last in San Carlos?
A properly poured, correctly sloped crown should hold up 20 to 30 years, and a quality stainless or copper cap should outlast it. The catch is that thin or poorly sloped crowns fail much faster in our wet-winter climate, sometimes within 10 to 15 years. That’s why the quality of the pour and the slope matter more than the price tag on the bid. Call (833) 620-0350 to have your current crown measured and checked.
Why We Specify the Parts We Do
A chimney cap is not a decorative lid, and a crown is not a coat of paint. Both are the first line of defense for the whole flue system above your roofline, and specifying the right component is the difference between a job that lasts and one you’re redoing in five years. We source caps through Gelco and copper work through Copperfield, venting components through Famco, and liner materials through Olympia Chimney, DuraFlex, and HeatShield. These are professional supply lines, not what’s cheapest at the general supply house. When we install a cap or pour a crown, we’re doing it with the components we’d put on our own homes.
And because we handle cleaning, inspection, repair, and relining under one company, we’re not handing you off to a mason when the crown needs more than a patch. We find it on inspection and we fix it on the same call. Your flue is a system, not just a tube: airflow, liner integrity, and fire containment all depend on the top of that chimney being sound. When you want that top sorted out properly, our home page explains who we are, and the chimney cap and crown service page walks through what happens on the visit.
Dryer vents are part of the same fire-safety picture, and lint buildup is one of the leading causes of residential fires. We clean dryer vents too, so a single company handles the whole exhaust and venting concern for your home.
Book Your Free Cap & Crown Estimate
The number you get should be the number you pay, and it should come from someone who’s actually looked at your chimney rather than guessed from the driveway. Call Chimney Sweep San Carlos at (833) 620-0350 and we’ll inspect the cap, measure the crown, and give you a clear, written estimate with line items. Cap and crown work is straightforward when it’s specified correctly and poured right. We’d rather do it once, the right way, than have you back on the phone in three years.
Pricing reflects the San Carlos market as of 2026. Chimney Sweep San Carlos offers free estimates – call (833) 620-0350.
What Our Customers Say
"Swept it, capped it, and installed a proper damper. The downdraft smell in the summer that we'd lived with for years is gone."
- Heather Anderson"Creosote buildup was worse than I realized. He measured it, showed me the glazing on the flue with the camera, and was honest that we were closer to a chimney fire than I wanted to hear."
- Allison Sullivan"Drop cloths everywhere, HEPA vac, and not a speck of soot on the carpet. I'd been dreading the mess for nothing."
- Michelle Doyle