Level 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.
Olympia Chimney Chimney Cap & Crown in Boulder: What to Know First
We provide independent Olympia Chimney chimney cap and crown service in Boulder, from standard cap swaps on single-flue systems to full crown rebuilds on multi-flue setups. Most Olympia Chimney cap and crown jobs we book in Boulder run $340-$890 depending on whether we’re coating a cracked crown or fabricating a custom cap for an unusual flue arrangement. Every job starts with a camera-scan inspection and a written price before any work begins - no exceptions.
This page is for Olympia Chimney owners in Boulder who need a cap replaced, a crown sealed, or a multi-flue system properly covered. If you’re seeing rust streaks down your chimney chase, water in your firebox, or a cap that’s blown crooked after a Front Range wind event, we can show you exactly what’s happening and what it’ll cost to fix. Call (970) 598-0453 for a free estimate.
How Olympia Chimney Products Fail - and How We Fix Them
- Olympia Chimney stainless single-flue caps (SC-series) - fastener fatigue in Boulder’s freeze-thaw. The SC-series uses 410 stainless with stamped-screw attachment points. After three or four Boulder winters, those screws back out from daily expansion-contraction cycles at 5,400 feet. We see this on homes in Martin Acres and North Boulder especially. We replace with 304 stainless hardware and add a bead of high-temp sealant at the attachment flange, not just torque-and-go.
- Olympia Chimney multi-flue caps (MC-series) - crown wash erosion underneath. The MC-series sits on a concrete crown wash that Olympia Chimney specifies at 1.5-inch minimum thickness. In Boulder’s dry climate, that wash cures too fast and develops micro-cracking within five years. Water gets underneath the cap skirt and rusts the base rail from below. We pull the cap, grind the crown to sound concrete, apply a CrownCoat flexible sealant or pour a new wash, then reset the cap with a proper drip edge.
- Olympia Chimney gelcoated galvanized caps (GC-series) - gelcoat chalking and UV failure. The GC-series was sold as a budget option through 2019. The gelcoat fails at altitude faster than at sea level; we’ve documented complete chalking on south-facing caps in Table Mesa within four years. Once the gelcoat is porous, the galvanized substrate rusts through in two more seasons. We replace with powder-coated 304 stainless or aluminum, depending on flue temperature, and we don’t reinstall gelcoated units - it’s not a repair that holds here.
- Olympia Chimney outside-mount caps (OM-series) - leg corrosion at the brick interface. The OM-series legs are galvanized steel with a painted finish. Where they slot into mortar joints, condensation wicks up the leg interior. In older Boulder homes with soft lime mortar - common in Mapleton Hill and the Hill - the leg expands as it rusts and spalls the brick face. We fabricate replacement legs in aluminum or 304 stainless, and we bed them in butyl rubber rather than driving them into compromised mortar.
- Olympia Chimney crown-forming systems - pour failure at the flue tile interface. Olympia Chimney’s crown forms are designed for a 2-inch gap between flue tile and crown edge. Boulder’s building inspectors enforce that, but DIY pours often bridge the gap or leave no expansion joint. The crown cracks vertically, water runs straight to the smoke chamber, and we find saturated refractory panels on the next sweep. We cut the bad crown out, form to Olympia Chimney spec with a proper flue tile wrap, and pour with air-entrained concrete rated for freeze-thaw.
Our Olympia Chimney Chimney Cap & Crown Process

- 1
Call and schedule. A live person answers. We ask for the Olympia Chimney model if you know it - SC, MC, GC, OM, or if you’re unsure, we note “unknown cap” and bring a measuring ladder.
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Camera-scan inspection. Our tech runs a chimney camera before touching the cap or crown. We document flue liner condition, smoke chamber, and the crown underside. Clause 4 of the Haven Standard requires this photo record on every job - we’ve done it since 2009.
- 3
Written price and scope. You get a written price, written scope, and written warranty before anyone starts. If the fix is a simple cap swap, we say so. If the crown is failing and the cap is a symptom, we show you the camera footage and explain both.
- 4
Parts decision: OEM or quality aftermarket. We stock Olympia Chimney caps through Haven’s buying network when the job calls for exact replacement. For discontinued GC-series or custom sizing, we fabricate from Gelco or Famco components - same gauge, better coating, and we document what we used so your warranty isn’t voided by mismatched metal.
- 5
Repair and test. Cap or crown work is done, joints are sealed, and we run a water test - simulated rain from a pressurized sprayer at the cap for two minutes, then camera down to confirm no intrusion. The camera doesn’t guess. Neither do I.
- 6
Documentation and cleanup. You receive the photo record, the written warranty, and the 365-Day Done Right Promise stamped on your invoice. We haul the old cap away unless you want it for scrap.
Before
AfterWhat Olympia Chimney Chimney Cap & Crown Costs in Boulder
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Olympia Chimney SC-series cap replacement | $340-$520 | Flue size (6″ vs. 8″ vs. 10″), need for flue tile repair, stainless vs. aluminum |
| Olympia Chimney MC-series multi-flue cap | $580-$890 | Number of flues, crown wash condition, custom mesh size for spark arrestor |
| Crown coating (CrownCoat or equivalent) | $420-$680 | Crown square footage, crack depth, whether flue tile needs re-wrapping |
| Crown rebuild (partial or full) | $890-$1,740 | Accessibility, need for scaffolding, number of flues, brick spall repair |
| OM-series leg replacement / brick repair | $480-$920 | Number of legs, mortar matching, brick sourcing for historic Boulder homes |
These are real ranges from jobs we’ve done in Boulder - from condos near Twenty Ninth Street to wood-burning systems up Fourmile Canyon. Every estimate is free, and every price is written before work starts. Call (970) 598-0453 for an exact quote on your Olympia Chimney system.
Why Boulder Homeowners Call Emberly Chimney Cleaners Boulder for Olympia Chimney Work

We’ve inspected and cleaned more than 38,000 chimneys since 2009, and a growing share in Boulder are Olympia Chimney systems installed between 2015 and 2020 - the years that brand expanded into Colorado through regional distributors. Corrine Halstead and our techs know which Olympia Chimney series were sold here, which have been discontinued, and which aftermarket parts match without causing galvanic corrosion at altitude.
Our background-checked, uniformed technicians arrive with license information, a text when they’re on the way, and the camera already in the truck. If your Olympia Chimney cap or crown job reveals a deeper issue - a failing DuraFlex liner, HeatShield refractory damage, Gelco damper corrosion - we carry those materials too, procured through Haven’s buying network to keep pricing honest. The 365-Day Done Right Promise applies to every repair. And if another company gave you a written estimate that doesn’t make sense, our Free Second Opinion is exactly that: free, and we’ll show you what we see on camera.
FAQs
No. As an independent Olympia Chimney service provider, we use OEM or compatible parts and document everything. Manufacturer warranties on chimney caps cover defects in materials and workmanship - they don’t require you to use the installing dealer for service. We note part numbers and installation methods on your invoice so any warranty claim has the paper trail it needs.
Yes, but we don’t recommend it. The GC-series gelcoat fails predictably at Boulder’s altitude and UV exposure. We fabricate replacements from Gelco or Famco powder-coated aluminum or 304 stainless that outlast the original. If you insist on OEM gelcoat for matching reasons on a historic home, we can source remaining inventory through Haven’s network, and we’ll document the expected service life honestly.
We camera-scan and water-test to find out. A loose cap with sound metal gets new fasteners and sealant. A cap with base rail rust, skirt deformation, or mesh corrosion gets replaced - resealing a failing cap just traps moisture. You’ll see the difference on camera before we quote either option. Call (970) 598-0453 for a free estimate.
Crown coating (CrownCoat or similar flexible sealant) works when the crown has hairline cracks and sound concrete underneath - typically under 1/8-inch crack width, no spalling, no exposed rebar. Crown rebuild is needed when the crown is cracked through, sloped wrong toward the flue, or the concrete is deteriorated. We determine which with a hammer test and camera inspection of the smoke chamber below. Rebuilds cost more but last 20+ years; coatings need refresh at 5-7 years in Bouldon’s climate.
We book inspections within a few days, and most cap and crown work follows within a week once the written estimate is approved. Spring and early fall fill fastest - Boulder homeowners tend to schedule before burning season. We don’t pressure-book; we do recommend addressing crown cracks before the first hard freeze, which in Boulder typically hits by late October. Call (970) 598-0453 to check current availability.
Written by Corrine Halstead, Owner, Emberly Chimney Cleaners Boulder at Emberly Chimney Cleaners Boulder, serving Boulder and nearby areas.





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