Masonry repair
Sweep & inspection
Caps & crowns
Flue relining
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.
Gelco Crown Repair: The Pasadena Owner’s Guide
Gelco crown repair in Pasadena typically runs $325 to $875 installed, depending on whether we’re sealing hairline cracks, filling eroded sections, or rebuilding the full crown. Our trucks carry Gelco-compatible crown repair materials, and most repairs are done same-day once we’re on site. The way owners usually find us is they look up during a rainstorm in January, see a dark stain spreading across the hearth ceiling, or they notice crumbling mortar dust collecting on the chimney cap after a Santa Ana wind event. That’s the crown failing. It’s the concrete slab at the top of your chimney that sheds water away from the flue, and when it goes bad, water gets behind the brick and starts doing what water does.
Which Gelco Models This Applies To
Gelco manufactured chimney covers and crown systems for residential masonry fireplaces, and their crown products were designed around standard flue tile dimensions, not proprietary sizes. What that means for a Pasadena homeowner: if your chimney has a standard 8×8, 8×12, or 12×12 clay flue tile, we can spec the correct Gelco-compatible crown repair without tracking down a discontinued part number. The crown is built on the existing chimney top, not bolted on like a cap, so exact model specs matter less than a field measurement of your chase width and flue projection. We measure on site, then build to fit.
One compatibility gotcha that catches people: Gelco crowns are not interchangeable with their caps. A cap sits on top of a crown; a crown is the slab itself. If your Gelco cap is fine but the crown under it is crumbling, you don’t need a new cap. This is the most common misdiagnosis we see when competing bids come in Pasadena, someone quotes a full cap-and-crown replacement when only the crown needs work.
We stock Gelco-compatible crown repair mortar and sealant in our trucks, along with DuraFlex and HeatShield products for related chimney work. Flint Chimney Co Pasadena is an independent service provider, not affiliated with Gelco, which means we recommend what fits your chimney, not what a brand rep wants us to push. If a crown repair calls for a different material because it’ll hold better in Pasadena’s hot-dry-then-wet cycling, we’ll say so and put that in writing.
Styles & brands we work with
How Much Does Gelco Crown Repair Cost in Pasadena?
Here’s the straight answer. A crown repair in Pasadena falls into three buckets, and we quote a flat written price before any work starts.
- Seal and patch hairline cracks: $325 – $450. This covers cleaning the crown surface, routing out small cracks, filling with a flexible crown sealant that holds in Pasadena’s freeze-thaw and heat cycles, and a water test.
- Partial rebuild where sections have eroded: $450 – $650. We form and rebuild the damaged portion, reset the crown edge to proper overhang and drip edge, and seal the full surface.
- Full crown rebuild with proper form and cure: $650 – $875. We remove the old crown, build a new one with the correct thickness and expansion joint around the flue, and seal everything. This is the permanent fix.
What drives the range is chase size, access, and how much of the old crown is salvageable. A second-story chimney with a steep roof takes more time than a single-story ranch in Bungalow Heaven. Every job gets the same written price delivered before work starts, and the number on that page is the number on the invoice. No surprise upcharges.
Every Gelco crown repair we install carries our 365-Day Done Right Promise: if the repair fails within one year from the service date, we come back and fix it at no charge. Second visit, free, no argument. That’s the same guarantee we’ve run since Hank Delano started doing this work in the San Gabriel Valley.
Signs Your Gelco Crown Repair Is Failing
- Crumbling edges you can see from the ground. The crown overhang should extend at least two inches past the chimney chase, with a drip edge underneath. If the edges look jagged, rounded, or missing, the overhang is eroding. That drip edge is what keeps water from running back under the crown and down the brick face. Once it’s gone, every rain event in Pasadena pushes water into the masonry.
- Efflorescence, the white chalky staining on the brick. This is dissolved salt and mineral being carried out of the mortar by water. It’s not a cosmetic issue. It’s the marker of ongoing water penetration, and on a chimney it almost always traces back to a failing crown letting water in at the top.
- Water staining on the ceiling near the fireplace. The crown sheds water away from the flue. When it cracks, water channels down along the outside of the flue tile and finds its way into the house. By the time you see the ceiling stain, the crown has been compromised for a while.
- Visible cracks wider than a quarter inch. Fine hairline cracking is normal on an older concrete crown in Pasadena’s heat. Cracks you can fit a nickel into are not normal. Those let water in during the first ten minutes of rain, and every wet-dry cycle the crack widens.
- Flaking mortar dust at the base of the chimney or in the firebox. The crown is breaking down above, and gravity does the rest. If you sweep up reddish-brown dust from the firebox floor and you haven’t burned anything in a week, that’s crown and flue material coming down.
The flue either draws or it doesn’t. Let’s find out which.
See the difference
Before
After
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After
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AfterDIY or Call Us?
There’s a safe line here, and we’ll be honest about where it is. From the ground, you can check for visible edge crumbling, cracked bricks near the top, and water stains in the ceiling by the fireplace. Those tell you something is wrong. What you cannot safely do is get on a ladder and start stuffing sealant into crown cracks, especially not on a second-story Pasadena chimney with clay tile roof access. Crown repair is not a beginner ladder job. It requires bringing the right mortar, forming the edge correctly, understanding expansion joint placement around the flue tile, and knowing how the sealant bonds to old concrete that’s been baking in California sun for two decades. A bad DIY crown patch will fail inside eighteen months and then you get to pay for the repair twice.
If you want someone to climb up, assess it, and give you a written number before any work starts, call (626) 657-5513. Free estimate. The person who answers is a real human, not a voicemail tree.
FAQs
A properly built chimney crown in Pasadena should last 20 to 30 years before it needs full replacement, though hairline sealing is often needed every 5 to 8 years as the concrete goes through seasonal expansion and contraction. Sun exposure on the south-facing side of the chimney will age the crown faster than the rest. If yours is showing multiple deep cracks and edge erosion, don’t wait for water to find the inside of your house. Call (626) 657-5513 for a free assessment.
Most crowns can be repaired without a full rebuild. We assess the depth and pattern of cracking; if the crown is structurally sound, we clean, route, and seal. If the overhang and drip edge are gone or the crown has separated from the flue, a partial or full rebuild is required. The decision comes down to what’s left to bond to. Call us for a straight answer and a written price.
Most Gelco crown repairs in Pasadena take one service visit, about two to three hours from setup to final seal. A full rebuild may require a return visit to strip the old form after cure, depending on weather. We’ll tell you the timeline in writing before work starts. Call (626) 657-5513 to book a day that works for you.
Yes. Our trucks carry Gelco-compatible crown repair mortar, flexible sealant, and forming materials on every job. We also stock related products from DuraFlex and HeatShield for a full chimney repair, so we don’t have to schedule you across multiple visits just because the truck was empty. One call to (626) 657-5513 and you’ll know exactly what we need to bring.
Ready to Get the Crown Fixed Right?
If you’re in Pasadena and your chimney crown is cracking, crumbling, or leaking, we’ll come out, assess it, and put the price in writing before any work starts. The tech sent to your house is background-checked and uniformed, the materials are pro-grade, and the repair carries a full one-year written guarantee. Call (626) 657-5513 today and get a real person on the line.
Written by Hank Delano, Owner, Flint Chimney Co Pasadena at Flint Chimney Co Pasadena, serving Pasadena and nearby areas.