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.
Gelco Chimney Cap & Crown in Pasadena: What to Know First
We provide independent Gelco chimney cap and crown service throughout Pasadena, typically scheduling within a week and completing most jobs in a single visit. Every Gelco job starts with a camera-scan inspection and ends with a written warranty, and the price is put in writing before any work begins. This page is for homeowners who already know they have a Gelco cap or crown and need to know what’s actually wrong, what it’ll cost, and who’s qualified to fix it without voiding whatever warranty remains. Call (213) 459-6058 to book or ask a specific question about your model.
How Gelco Products Fail - and How We Fix Them
- Multi-Flue Caps (Series A and B): The 304 stainless mesh on older Series A units develops pinpoint corrosion at the weld points where Pasadena’s marine layer settles, especially on north-facing flues in the Bungalow Heaven area and other neighborhoods below the San Gabriel foothills. The mesh looks intact from the ground but pulls apart under light pressure. We source replacement mesh panels through our Haven buying network and reweld with 316L marine-grade wire, or fit a compatible Gelco Series B cap if the frame itself has warped from thermal cycling.
- Single-Flue Caps with Overhang (Model 1212 through 1818): The stamped-steel lid on these economy-line caps traps condensation against the flue tile when Pasadena’s winter temperature swings hit - 45 degrees at dawn, 75 by noon. The resulting rust streaks down the flue face and stains masonry. We remove the cap, assess whether the flue tile has spalled, and typically upgrade to a Gelco stainless lid or a compatible aftermarket cap with a 1-inch standoff to break the condensation bridge.
- CrownSeal Coating on Gelco-Protected Crowns: Gelco’s CrownSeal is a flexible membrane coating, but when applied over active cracks without proper surface prep, it delaminates in sheets after two to three Pasadena summers. We’ve peeled back intact-looking CrownSeal on crowns in the Madison Heights neighborhood to find the original crack had widened underneath. Our fix: mechanical scarification of the old coating, hydraulic cement for structural cracks, then either fresh CrownSeal or a poured concrete crown rebuild depending on what the camera shows below.
- Top-Mount Damper Caps (Pre-2015 Units): The cast-aluminum throat plate on early Gelco top-mount dampers corrodes where the rain lip meets the flue wall, particularly on fireplaces that see occasional summer use when Pasadena’s humidity peaks. The damper won’t seal fully, and the homeowner smells smoke on startup or feels a draft. We inspect the throat plate with a borescope, replace with current Gelco hardware if the frame is sound, or convert to a new top-mount damper from our DuraFlex or HeatShield inventory if the frame has distorted.
- Custom Copper Caps: Gelco’s custom copper line develops green verdigris that’s mostly cosmetic, but the solder joints at the corner miters fatigue after 15-plus years in Pasadena’s UV exposure. We’ve re-soldered miters on copper caps above Altadena-border homes and replaced others where the copper had thinned to the point of pinholing. We match the patina with reclaimed stock when the homeowner wants visual continuity, or switch to stainless if they’re tired of the maintenance cycle.
Our Gelco Chimney Cap & Crown Process

- 1
Camera inspection first. We run a chimney camera before touching anything. Corrine Halstead started this practice in 2009, and it’s now Clause 4 of the Haven Standard. The camera doesn’t negotiate - it just shows what’s there.
- 2
Written price, written scope. You get a single-page document with the diagnosis, the exact work, the parts source, and the total cost. No work starts until you sign it. Haven Standard Clause 1.
- 3
Parts decision with options. We stock common Gelco hardware and source through our Haven buying network from DuraFlex, HeatShield, and others. If OEM Gelco is back-ordered or discontinued, we quote a quality aftermarket equivalent and explain the warranty implications.
- 4
The repair. Crown work gets weather-monitored scheduling - we don’t pour or coat in rain. Cap installs include proper fastening to the flue or crown with stainless hardware rated for Pasadena’s wind loads.
- 5
Post-repair camera verification. We run the camera again to document the finished condition, especially on crown rebuilds where the flue wall interface is critical.
- 6
Cleanup, documentation, and warranty. You receive a photo record, the signed scope, and a 365-Day Done Right Promise stamped on the invoice. If it’s not done right, we make it right.
Before
AfterWhat Gelco Chimney Cap & Crown Costs in Pasadena
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Gelco cap installation (single flue, standard size) | $340 - $580 | Flue height, need for flue tile repair, stainless vs. galvanized |
| Gelco multi-flue cap replacement | $620 - $1,100 | Flue count, frame condition, mesh grade (304 vs. 316L) |
| Crown repair with CrownSeal coating | $480 - $780 | Crown square footage, crack depth, whether old coating must be removed |
| Crown rebuild (poured concrete) | $1,400 - $2,400 | Crown dimensions, chimney height/roof access, flue wall condition |
| Top-mount damper cap repair or replacement | $560 - $920 | Throat plate condition, frame integrity, liner compatibility |
These are 2024-2025 ranges for the Pasadena market based on our actual invoiced jobs. A cap on a straight 12×12 flue with sound tile runs at the low end. A crown rebuild on a two-story chimney with spalled flue tile and poor roof access runs higher. We don’t guess - we inspect, then write the exact price. Call (213) 459-6058 for a free estimate.
Why Pasadena Homeowners Call Level Two Chimney Pasadena for Gelco Work

We’ve inspected over 38,000 chimneys since 2009, and a significant share of those have been Gelco caps and crowns in Pasadena’s varied housing stock - from 1920s craftsmans with oversized flues to 1990s rebuilds with standard sizing. Corrine learned the trade through Queensborough Community College’s building maintenance and HVAC programs, then spent years on rooftops before founding this company. She and her crew know which Gelco series shipped with which weak points, and they don’t recommend replacement when repair is honest.
Our background-checked, uniformed technicians carry license information on every page and every truck. You get a text when your tech is en route. Calls are answered live, 24 hours a day. And if another company has given you a written estimate for Gelco work, we’ll provide a Free Second Opinion - no charge, no pressure, just the camera footage and our number.
FAQs
No - as an independent Gelco service provider, we use warranty-safe practices and document everything, but Gelco’s original manufacturer warranty expired based on purchase date, not who services it. We provide our own 365-Day Done Right Promise on all labor and installed parts. Call (213) 459-6058 if you need help determining your original purchase window.
Yes, for most pre-2015 Gelco lines. We maintain salvage inventory and source through our Haven buying network from Olympia Chimney, Famco, and Copperfield. When OEM Gelco is truly unavailable, we quote a dimensionally compatible aftermarket equivalent with the same or better material spec. Call (213) 459-6058 with your model number for a parts check.
We decide after the camera inspection. Crown repair with CrownSeal coating is honest when cracks are superficial and the crown structure is sound. Full rebuild is necessary when the crown has settled, separated from the flue wall, or developed through-cracks that allow water into the smoke chamber. We show you the camera footage and explain which category you’re in before quoting either option. Call (213) 459-6058 to schedule the inspection.
Most cap installations and crown repairs are completed in a single visit of two to four hours. Crown rebuilds require a return trip for cure time - typically poured on day one, sealed on day two or three depending on weather. We schedule around Pasadena’s rain patterns and never rush a cure. Call (213) 459-6058 for availability.
Water enters through the crack, freezes in Pasadena’s occasional sub-40 nights, and expands the crack further. Within one to two winters, the damage typically reaches the flue liner and smoke chamber, turning a $600 crown repair into a $2,000-plus rebuild with liner work. The camera shows the progression clearly - we don’t recommend urgency without evidence. Call (213) 459-6058 for a free inspection and honest timeline.
Ready to know what’s actually happening with your Gelco chimney cap or crown? Call (213) 459-6058 for a free estimate. We’ll run the camera, write the price, and let you decide - no deposit, no pressure, no work until you sign the scope.
Written by Corrine Halstead, Owner, Level Two Chimney Pasadena at Level Two Chimney Pasadena, serving Pasadena and nearby areas.





Before
After
Before
After