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.
Famco Crown Repair: The Boulder Owner’s Guide
Famco chimney crown repair in Boulder typically runs $340-$780 installed, depending on whether we’re sealing hairline cracks or pouring a new cast-in-place crown over a Famco flue system. We stock Famco-compatible crown sealants, stainless steel drip edges, and forming materials on every truck, and most repairs are completed in a single visit. Boulder homeowners usually discover crown trouble during their first pre-burning-season inspection, when water staining on the firebox back wall or white efflorescence on the exterior brick tells the story the crown has already been leaking for a season or two.
Which Famco Models This Applies To
Famco manufactured chimney caps, chase covers, and venting accessories across several product lines, and their crown-adjacent components often integrated with round metal chimney systems common in 1980s-2000s Boulder construction. We regularly encounter Famco caps and collars on homes in Table Mesa and North Boulder, where galvanized chase covers were spec’d heavily during that building period.
To identify your Famco component, look for stamped model numbers on the cap skirt or chase cover flange - typically a format like “FCO-##” or “Famco Series X.” The critical measurement is the flue tile outer diameter, since Famco caps were sized to overhang standard 8×8, 8×12, or 13×13 flues. A common gotcha: some Famco chase covers were built with a 1-inch overhang standard, while later replacement caps need 1.5 inches minimum to shed Boulder’s wind-driven snow properly.
We source OEM Famco hardware where it’s still available, and when it’s not, we specify Gelco or Olympia Chimney stainless equivalents through our Haven buying network - never a generic big-box cap forced to fit. The decision hinges on whether your existing chase framing is square and true; if it’s racked from years of freeze-thaw, a custom-fabricated Gelco chase cover with proper counterflashing is the honest recommendation.
Signs Your Famco Crown Repair Is Failing

- Water stains on the firebox ceiling or back wall. The crown’s concrete or sealant layer has cracked, allowing meltwater from Boulder’s spring freeze-thaw cycles to migrate down the flue. In homes near Chautauqua with mature tree canopy, leaf decomposition acids accelerate the concrete deterioration.
- White powder (efflorescence) blooming on exterior brick below the crown. This is mineral salt left behind as water evaporates through the masonry - proof that water is entering at the crown level and traveling through the brick rather than being shed outward. The crown’s slope or drip edge has failed.
- Spalling or flaking brick faces in the top 2-3 courses below the crown. Water trapped behind the crown freezes overnight in Boulder’s 30-degree temperature swings, expanding and shearing off the brick face. By the time you see this, the crown has been compromised for multiple seasons.
- Rust streaks down a metal chimney chase. Famco chase covers use galvanized steel that eventually pinholes at the corners where standing water collects. Once rust appears, the underlying wood chase framing is likely wet and may need inspection.
- Damper corrosion or operation stiffness. Moisture dripping past a failed crown lands on the damper plate and throat frame. In older Mapleton Hill homes with original Famco components, we’ve found dampers frozen solid after a single wet winter with crown leakage.
Before
AfterReplacement Cost & What’s Included
| Service | Price Range | What’s Included |
|---|---|---|
| Crown sealant / minor crack repair | $340-$480 | Surface prep, flexible crown coat application, drip edge verification, photo documentation |
| Partial crown rebuild (formed pour) | $580-$780 | Forming, reinforced concrete pour, proper slope to shed water, stainless drip edge, photo record |
| Chase cover replacement (Famco/Gelco/Olympia) | $520-$890 | Custom-measured stainless cover, storm collar, counterflashing, written warranty |
What drives the range: access difficulty (steep roof pitch, multi-story), extent of hidden water damage to framing, and whether the flue tile itself needs resetting. We deliver a written price before any work starts - Haven Standard Clause 1 - and that price includes all materials, labor, and the documented photo record required under Clause 4. Every crown repair carries our 365-Day Done Right Promise.
DIY or Call Us?

Here’s what you can safely check yourself: from ground level with binoculars, look for visible cracks in the crown surface, missing chunks at the edges, or rust on a metal chase cover. If you’re comfortable on a ladder and the roof is walkable, you can measure your flue tile outer dimensions to start the parts conversation.
Where DIY goes wrong: crown coating products sold at hardware stores are formulated for mild climates, not Boulder’s 5,400-foot altitude with intense UV and 40-degree daily temperature swings in shoulder season. The application requires clean, dry concrete and proper slope forming - we’ve been called to redo homeowner crown jobs where the sealant trapped moisture underneath and accelerated spalling. Working at roof edge on a chimney stack is genuine height hazard; our crews are equipped with proper fall protection and carry workers’ compensation.
Call (970) 598-0453 and we’ll quote the repair in writing before we start - no charge for the assessment, and you’ll see the camera footage yourself.
FAQs
A properly formed concrete crown with stainless drip edge lasts 15-25 years in Boulder’s dry climate, though the intense UV at altitude can shorten sealant-only repairs to 5-8 years. We use UV-stable flexible crown coatings for minor repairs and specify reinforced concrete pours with proper slope for permanent solutions. Call (970) 598-0453 for an exact quote - estimates are free.
Hairline cracks under 1/8 inch with no underlying spalling can be sealed; anything wider, or any crown that has lost its positive slope toward the edges, needs a formed rebuild. The camera doesn’t guess. Neither do I - we show you the footage and quote both options when both are honest. Call (970) 598-0453 for an assessment.
Most sealant repairs are completed in 2-3 hours; a full formed pour requires a return visit after the concrete cures, typically a two-day process. We schedule to minimize disruption and text when the technician is en route. Call (970) 598-0453 to book.
We carry Famco-compatible crown sealants, forming materials, stainless drip edges, and custom chase cover measuring tools on every Boulder truck. For specific Famco hardware that must be ordered, our Haven buying network sources through Famco, Gelco, or Olympia Chimney with typical 2-3 day turnaround. Call (970) 598-0453 - most repairs are completed same-day or next-day.
Written by Corrine Halstead, Owner, Emberly Chimney Cleaners Boulder at Emberly Chimney Cleaners Boulder, serving Boulder and nearby areas.





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