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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AfterHow Much Does Chimney Cap & Crown Cost in Longmont?
Chimney cap and crown work in Longmont typically runs $285 to $1,450 depending on whether you need a new cap alone, a crown repair, or both. A standard stainless steel cap installed on a masonry flue usually lands between $285 and $650. Crown repair with a sealant or resurfacing product runs $400 to $900, and a full crown rebuild in cast-in-place concrete can reach $1,450. Most homes we quote in Longmont fall in the $400 to $750 range because they need one component addressed, not the whole top of the chimney.
We give free estimates and a written price before any work starts, so the number you hear on the phone is the number on the estimate. Call (855) 360-7080. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
Chimney Cap & Crown Cost Breakdown (2026)
The ranges below reflect what we see quoted across the Longmont market in 2026. Every job is priced per job by the written estimate, and the estimate is free.
| Line item | Typical 2026 range in Longmont |
|---|---|
| Single-flue stainless steel cap, installed | $285 – $650 |
| Multi-flue cap (two to three flues) | $550 – $1,100 |
| Custom or oversized cap | $700 – $1,300 |
| Crown crack sealing and repair | $400 – $750 |
| Crown resurfacing with a restoration product | $550 – $900 |
| Full crown rebuild, cast-in-place | $900 – $1,450 |
| Cap and crown together | $650 – $1,600 |
| Chimney sweep before the cap goes on | Quoted separately by estimate |
What pushes a quote toward the top of these ranges: roof pitch and access, the height of the chimney above the roofline, whether the crown is a simple slab or has a decorative overhang, and whether the flue needs a custom cap because of an unusual tile size. Winter weather in Longmont also matters. Freeze-thaw cycles along the Front Range open hairline crown cracks wider each season, so a crown that looks fine in July can be a real problem by February. Catching it early keeps you in the crack-sealing range instead of the rebuild range.
What Affects Chimney Cap & Crown Pricing in Longmont
Several things move the number more than others. Here’s what we look at when we put an estimate together.
- Roof pitch and access. A steep roof over an older Longmont bungalow takes more setup than a low-pitch roof, and that setup time is part of the price. Access is a bigger cost driver than most homeowners expect.
- Chimney height and flue count. One flue is straightforward. Two or three flues need a wider cap, more material, and more time on the roof, which is why multi-flue caps sit higher in the range.
- Crown condition. A cracked crown that still has a solid base can be sealed. A crown that has separated from the flue, crumbled at the edge, or let water into the masonry needs a rebuild. We tell you which one you have before we quote.
- Material choice. Stainless steel caps outlast painted steel by a wide margin, and the price difference up front is modest. We install DuraFlex, Gelco, Olympia Chimney, Famco, and Copperfield products, so you can see exactly what’s going on your chimney rather than guessing at a hardware-store part.
- Masonry condition underneath. If water has been getting in for years, the crown isn’t the only issue. Spalling brick and deteriorated mortar joints may need attention, and we flag that during the sweep so you can plan for it.
- Whether a liner repair is also needed. Sometimes a failed crown is the first sign of a flue problem. HeatShield resurfacing can restore a liner without a full reline, which changes the total cost of the visit considerably.
If you want the full picture of how we approach the work, our chimney sweep in Longmont page covers the sweep-and-inspect side, and the Longmont service overview explains how repairs and cleaning fit together for local homeowners.
How Much Does a Chimney Cap Cost in Longmont?
A chimney cap in Longmont typically costs $285 to $650 for a single-flue stainless steel cap installed. A cap does three jobs: it keeps rain out of the flue, it stops birds and squirrels from nesting inside, and it keeps sparks off the roof. It’s one of the least expensive pieces of chimney work you can do, and it prevents problems that cost far more later. We install caps built for the flue size we measure on site, not a universal part that almost fits.
Multi-flue caps and custom sizes run higher because of material and fabrication. If you have an unusual flue tile or a chimney with an offset, expect a custom cap and a quote toward $700 to $1,300. Call (855) 360-7080 for a free estimate on your specific chimney.
How Much Does Chimney Crown Repair Cost in Longmont?
Chimney crown repair in Longmont usually runs $400 to $750 for crack sealing and $900 to $1,450 for a full rebuild. The crown is the concrete slab on top of the chimney, and it’s the part most exposed to Colorado weather. It sheds water away from the masonry below. When it cracks, water gets in, freezes, expands, and does damage that shows up as stained ceilings and crumbling brick months later.
Repair versus rebuild comes down to how much of the crown is still sound. A crown with a few hairline cracks can be sealed and resurfaced. A crown that has pulled away from the flue, lost its slope, or cracked all the way through needs to come off and be replaced. We give you the honest read on which category yours falls into. It’s the difference between a repair that lasts and money spent twice.
Is It Cheaper to Repair or Replace a Chimney Crown?
Repair is cheaper in the short term and often the right call, at $400 to $750 versus $900 to $1,450 for a rebuild. But repair only makes sense when the crown is structurally intact. If more than a third of the crown is compromised, or if the crown has lost its bond to the flue, sealing it is a stopgap that fails within a few seasons. We’d rather tell you that up front than sell you a repair that won’t hold through a Longmont winter.
One practical note: a crown rebuild is a good moment to confirm the cap is sized and seated correctly, since both are on the same trip to the roof. Pairing them can keep the total closer to $650 to $1,600 rather than two separate service calls.
How Long Does Cap and Crown Work Take?
Most cap installations take under two hours, and most crown repairs are done in a single visit. A full crown rebuild takes longer because the new crown has to be formed and finished properly, and it may need a return visit for final sealing depending on conditions. We’ll tell you the expected timeline in the written estimate so you can plan around it.
Cap and crown work almost always starts with a sweep and inspection. That way we see the flue condition from the inside before we close the top off with a new cap. If a defect is found during the sweep, we can often address it the same visit. That’s one of the reasons we handle chimney sweeping and chimney repair as one service rather than two.
Why Cap and Crown Fail Faster in Longmont
Longmont sits on the Front Range where the freeze-thaw cycle is relentless from late fall into early spring. Water gets into a hairline crack in the afternoon when the sun is out, then freezes overnight and expands. That cycle repeats dozens of times a season. A crack that would stay stable for years in a milder climate opens up in a single winter here.
The result is that crown maintenance in Longmont rewards a schedule rather than a reaction. Check the crown in fall before the first hard freeze, and again in spring. If you’ve just bought an older home and the inspection report flagged the chimney, the crown and cap are the first things to look at, because they’re the cheapest part of the system to put right and they protect everything below them.
How to Save on Chimney Cap & Crown
There are real ways to keep this work in the lower part of the range without skipping what matters.
- Combine the visit. Have the sweep and inspection done at the same time as cap or crown work. One trip up the roof is cheaper than two, and it means any defect is caught before the top gets sealed.
- Fix cracks while they’re cracks. Sealing a $400-to-$750 crown repair now avoids a $900-to-$1,450 rebuild later. This is the single biggest savings available on this work.
- Choose stainless over painted steel. A stainless cap costs a little more up front and lasts far longer in Colorado weather. It’s cheaper per year of service.
- Get a written estimate before work starts. Ours are free, and the price on the estimate is the price you pay. Anything else is a guess you’re financing.
- Ask about the flue while the cap is off. HeatShield liner resurfacing can restore a worn liner without a full reline. Knowing that early can change how you plan the whole chimney budget.
Call (855) 360-7080 for a free estimate. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday.
What We Install and Why the Brand Matters
We name the brands we install, because you deserve to know what’s going into your home. For caps and crowns we work with DuraFlex, Gelco, Olympia Chimney, Famco, and Copperfield, all professional-tier products rather than hardware-store substitutes. When a cap goes on your chimney, you’ll know the maker and the model, not just “a cap.”
The same thinking applies below the crown. We’re authorized to install DuraFlex flexible liner systems, which are the standard for relining aged or damaged flues. We’re also HeatShield-capable for chimney liner restoration, a less invasive and more cost-effective alternative to full relining when the flue is worn but not gone. From the first sweep to a full liner repair, we handle the whole flue. Our technicians have up to 9 years of experience, and we work with a curated roster of professional-grade brands so the materials in your chimney are traceable and built to last.
If you’ve been told your chimney needs a crown and a liner, you don’t need two contractors. We handle sweeping, repair, and dryer vent cleaning. Dryer vents are the hidden fire hazard most chimney companies don’t touch, and lint buildup is a real risk worth clearing on the same visit if your vent is due.
FAQs – Chimney Cap & Crown Cost
How much does a chimney cap cost in Longmont?
A chimney cap in Longmont typically costs $285 to $650 installed for a single flue. Multi-flue and custom caps run $550 to $1,300. Call (855) 360-7080 for an exact quote. Estimates are free.
How much does chimney crown repair cost in Longmont?
Chimney crown repair in Longmont typically costs $400 to $750 for crack sealing and $900 to $1,450 for a full rebuild. The estimate sets the final price. Call (855) 360-7080 for a free quote on your crown.
Is it cheaper to repair or replace a chimney crown?
Repair is cheaper at $400 to $750 versus $900 to $1,450 for replacement. Repair holds only when the crown is structurally sound. If more than a third is compromised, a rebuild is the better value. Call (855) 360-7080 and we’ll tell you which one you have before you commit.
Can you install a chimney cap and repair the crown on the same visit?
Yes, in most cases. Cap and crown work together typically runs $650 to $1,600 and is usually completed in a single visit when access is straightforward. Call (855) 360-7080 to book a free estimate and we’ll confirm the timeline for your roof.
Can you come today?
Same-day service is often possible in Longmont. Call (855) 360-7080. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday, and a call outside dispatch hours is booked into the next opening. Estimates are free and the written estimate sets the final price.
Does a chimney cap prevent water damage?
Yes, a properly sized cap keeps rain out of the flue and off the crown, which is the leading cause of the freeze-thaw damage we see on Longmont chimneys. It pairs with a sound crown to protect the masonry below. Call (855) 360-7080 for a free estimate on a cap sized to your flue.
Get a Free Cap and Crown Estimate in Longmont
Whether you have a single crack in the crown or you’re starting from a home inspection report that flagged the whole chimney, we’ll give you a written estimate and an honest read on what actually needs doing. No mystery parts, no upsells. Professional-grade materials from brands we name.
Call (855) 360-7080. We answer 24/7. Fast dispatch from 7am to 7pm, Sunday through Friday, and if a call comes outside dispatch hours, we book it into the next opening. From the first sweep to a full liner repair, we handle the whole flue.
Pricing reflects the Longmont market as of 2026. Chimney Sweep Longmont offers free estimates. Call (855) 360-7080.
Written by the team at Chimney Sweep Longmont.
What Our Customers Say
"Drop cloths everywhere, HEPA vac, and not a speck of soot on the carpet. I'd been dreading the mess for nothing."
- Cole Doyle"Liner was cracked in two places. He walked me through the repair options honestly, including the one that was cheaper for him and better for me."
- Stephanie Lawson"Cap keeps the birds out now, which after two springs of scratching noises is worth every penny."
- Daniela Ramirez