Fast, Reliable Chimney Cap & Crown Across Boulder
Chimney cap and crown repair in Boulder typically runs $280-$650 for most residential jobs, and our Chimney Cap & Crown in Boulder crew completes the majority same-day. We’re familiar with the wind-scoured masonry along Baseline Road, the vintage chimneys in Mapleton Hill, and the freeze-beaten crowns in Table Mesa. One call to (844) 803-1545 reaches a live person, and we’ll give you a straight answer about whether your cap blew off in last night’s Chinook gust or your crown has been crumbling since the last hard freeze.
Boulder’s position at the mouth of Boulder Canyon generates downslope wind events that documented gusts have pushed past 100 mph. That kind of force doesn’t just rattle a loose cap. It tears off galvanized steel, snaps wind bands, and drives rain sideways into crown cracks that would stay dry in calmer climates. We’ve replaced caps on homes near Chautauqua Park that blew clear into the neighbor’s yard. We’ve re-poured crowns in Newlands that failed not from poor original work, but from a decade of thermal shock that no Front Range city matches.
Our technicians carry the common cap sizes and crown repair materials for Boulder’s housing stock. That means no waiting on parts shipped from Denver distributors. Most jobs finish in a single visit, with photos you can see and a plain-English verdict before we pack up.
Why Hearthstone Chimney Co. Is Boulder’s Preferred Chimney Cap & Crown Company
We’ve been answering calls from Boulder homeowners since 1984. Over 42 years, we’ve learned the difference between a crown that cracked from normal settling and one destroyed by Boulder’s particular combination of high-altitude UV exposure and rapid freeze-thaw cycling. That matters when you’re deciding between a repair and a full rebuild.
Our Level-2 camera inspections end with photos on a tablet and a verdict you can understand. No engineer-speak, no scare tactics. If your flue liner is intact and your crown only needs a coating, we’ll say so. If the crown has deteriorated past saving and water is reaching the brick courses below, we’ll show you exactly where.
Every job carries the 90-Day Done Right Promise in writing. If it’s not right, we come back. No paperwork to dig up, no argument about whether the problem was there before. That’s the Keystone Standard, and it’s governed by our K.E.Y.S. code: Krafted right, Every time, Your home first, Standing behind it.
A live person answers our phones 24 hours a day, 7 days a week. Not an answering service that takes a message. Not a callback queue that rings you back tomorrow. Someone who can dispatch a technician, confirm your appointment, or talk through whether that gap between your crown and flue tile needs immediate attention.
Our Chimney Cap & Crown Services in Boulder
Cap Installation
New cap installation in Boulder runs $180-$420 depending on flue count, cap material, and whether your flue liner protrudes or sits flush. We size for wind load here, not just rain. That means heavier-gauge stainless or copper from Famco, proper wind band anchoring, and clearance calculations that account for Boulder’s frequent high-wind advisories. A cap installed to standard Denver specs can leave you picking it out of the shrubs after the first spring Chinook.
Cap Replacement
Replacement caps in Boulder often follow wind damage or rust-through from years of snow sitting on a low-grade galvanized unit. We remove the old cap, inspect the flue top for spalling or liner damage that the previous cap concealed, and install a replacement that fits correctly. Most replacements run $160-$380. If your flue liner is cracked or the flue top has deteriorated, we’ll document it with photos and explain whether Chimney Liner & Rebuild in Boulder needs to happen first.
Crown Repair
Crown repair addresses cracks, spalling, and edge deterioration before water reaches the brick below. In Boulder, we see crowns that failed prematurely because they were poured without proper overhang, slope, or reinforcement for our freeze-thaw cycle. Minor crack sealing and resurfacing runs $280-$450. More extensive rebuilds where the crown has separated from the brick or the wash layer has washed out entirely range from $480-$850. We pour to a minimum 2-inch thickness at the edge with proper drip edge and slope, using professional-grade crown mix, not bagged concrete from a hardware store.
Crown Coating
Crown coating buys time on a structurally sound crown that has minor cracking or surface porosity but hasn’t failed. We use HeatShield’s crown coating system or equivalent professional-grade flexible sealants that bridge hairline cracks and shed water without trapping moisture. Coating application runs $220-$380 in Boulder and carries the same 90-Day Done Right Promise as our rebuilds. It’s not a permanent fix for a crown that’s crumbling, but it’s a square deal when the condition warrants it.
Multi-Flue & Custom Caps
Homes in Mapleton Hill and the University Hill area often have multiple flues or non-standard flue spacing that rules out stock caps. We measure on-site and order custom stainless or copper caps from Copperfield and Famco that cover properly without crowding. Custom multi-flue caps typically run $420-$780 installed. Lead times are usually 5-7 business days, and we don’t collect full payment until the cap is on and you’re satisfied with the fit.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Boulder
We work exclusively with professional-grade materials: DuraFlex for liner and venting components, HeatShield for crown coating and resurfacing systems, and Famco and Copperfield for caps and termination hardware. No builder-grade substitutes, no hardware-store specials that rust through in three seasons. We stock the common cap sizes for Boulder’s prevalent flue dimensions, so most replacements don’t wait on shipping. When a custom order is necessary, we handle the measurement, the order, and the installation start to finish. The brands we use are the same ones specified by chimney professionals nationwide because they hold up to real conditions, including the ones Boulder throws at them.
Common Chimney Cap & Crown Problems We See in Boulder Homes
- Wind-lifted caps from Chinook events. Boulder’s documented 100+ mph downslope gusts routinely tear off poorly anchored caps, especially on homes near the foothills and in exposed ridges above town. We find the damaged cap, assess whether the flue top survived, and reinstall with proper wind bands and fasteners rated for the load.
- Crown cracks from rapid freeze-thaw cycling. Boulder’s elevation means daytime winter highs above freezing followed by overnight lows in the teens. Water enters crown cracks, expands, and repeats until the crown separates from the brick courses. We see this most in 1960s-70s ranch homes in Table Mesa and Baseline where original crowns were thin to begin with.
- UV-degraded crown wash on south- and west-facing chimneys. At 5,430 feet, Boulder’s UV intensity is significantly higher than sea level. The thin cement wash many builders applied in the 1970s and 1980s chalks and erodes faster here, leaving the concrete crown underneath exposed. We re-pour with proper slope and overhang, or coat with UV-stable sealants where appropriate.
- Historic chimney crowns with no reinforcement. The Victorian and Craftsman homes in Mapleton Hill often have original crowns that are little more than a sloped mortar cap over the brick. These weren’t designed to last 140 years, and most haven’t. We rebuild with modern crown mix and steel reinforcement while preserving the exterior appearance that historic preservation guidelines require.
Pricing for Chimney Cap & Crown in Boulder, CO
| Service | Typical Range in Boulder |
|---|---|
| Single-flue cap installation (stainless) | $180-$320 |
| Single-flue cap installation (copper) | $340-$420 |
| Cap replacement (standard size) | $160-$380 |
| Multi-flue or custom cap | $420-$780 |
| Crown coating (minor cracks) | $220-$380 |
| Crown repair / partial rebuild | $280-$450 |
| Full crown rebuild | $480-$850 |
| Level-2 inspection with photos | $89-$150 |
What moves you within these ranges? Flue height and accessibility, whether scaffolding is needed for steep roofs, the condition of the brick courses beneath a failed crown, and whether liner damage is found once the cap is off. We give you the full number before we start, not a lowball that grows. Our $89 Seasonal Tune-Up includes a basic cap and crown visual assessment. Seniors and veterans receive a standing 5% discount. And if you’ve got a written estimate from another company, we’ll give you a free second opinion.
Call (844) 803-1545 for an exact quote on your chimney. Estimates are free, and we don’t charge to show up and look.
We Also Serve Cities Near Boulder
Our technicians live and work along the northern Front Range, so we’re regularly in Boulder, Louisville, Lafayette, Erie, and Broomfield without the travel-time markup you’d pay from a Denver-based outfit. If you’re in unincorporated Boulder County or one of the mountain communities above town, call and we’ll confirm routing. Same live answer, same upfront pricing, same single-visit completion when possible.
Serving Boulder, CO - Our Local Coverage Area
We’re based in the Boulder area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Chimney Cap & Crown in Boulder
We typically schedule cap and crown work within 1-3 business days, and same-day service is often available for wind-damaged or leaking caps during our busy season. Call (844) 803-1545 and a live person will check today’s availability for your Boulder address.
Yes. We work throughout Boulder including Mapleton Hill, Newlands, Chautauqua, Table Mesa, Baseline, and the University Hill area. Our technicians are familiar with historic preservation guidelines in designated districts and take care to match exterior appearance when rebuilding crowns on protected homes.
An exposed flue is an emergency if rain or snow is entering, or if birds or squirrels have begun nesting. Boulder’s sudden spring and fall storms can dump significant water into an open flue in a single night. We answer calls 24/7 and will prioritize same-day dispatch for active water intrusion or blocked flues.
Boulder’s elevation, freeze-thaw severity, and historic housing stock mean crowns here often need more extensive rebuilding rather than simple patching. A $220 coating in Lafayette might be a $480 rebuild in Mapleton Hill because the original crown was never reinforced and has finally failed after 80 years. We price for the actual condition we find, not a flat rate that assumes every chimney is the same.
Every job carries our 90-Day Done Right Promise in writing. If the cap leaks, the coating fails, or the crown crack reopens within 90 days, we return and make it right with no paperwork and no argument. Beyond that, materials carry manufacturer warranties: Famco and Copperfield caps typically carry 10-year to lifetime warranties against defects, and our workmanship warranty extends to proper installation. The promise is simple. If it’s not right, we come back.
Ready to stop worrying about what’s sitting on top of your chimney? Call Hearthstone Chimney Co. at (844) 803-1545 for a free estimate. We’ll look at your cap and crown, show you photos of what we find, and give you a number that doesn’t change. Done right, and we stand behind it.
Written by Russell Haines, Owner at Hearthstone Chimney Co., serving Boulder since 1984.