Sweep & inspection
Caps & crowns
Flue relining
Masonry repair
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 Chimney Cleaning in Lemay, MO
We provide independent Gelco service across Lemay, and the one thing that sets our work here apart is what we find on the roofs: pre-war brick bungalows with exterior chimneys that the sun and freezes have worn down for decades before anyone thinks to look up. If you need a Gelco cap or damper checked, repaired, or replaced, call (866) 596-7310. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday. We’re an independent chimney specialist, not affiliated with or authorized by Gelco, and our technicians have up to 12 years of experience with this kind of product. We know how each cap, damper, and component behaves in the real world, not from a sales script.

Why Lemay Residents Choose Us for Gelco Service
Gelco products come in four main forms we handle: stainless steel multi-flue caps, top-mount damper assemblies, single-flue chimney caps, and rain caps with spark arrestors. We’ve worked with enough of them to recognize the failure patterns on sight. On a Lemay bungalow, a cap that loosened at the mounting legs tells us something the homeowner can’t see from the ground: the crown underneath is probably spalling.
Because we’re an independent shop, we recommend the correct Gelco part for your flue without being pushed toward a one-size manufacturer answer. Your 1920s clay flue is not the same as a modern liner, and the fit matters. We match the failing component with genuine Gelco replacement parts when the cap or damper is still serviceable, and we use quality stainless aftermarket hardware only where it fits better on an irregular old brick crown.
Scheduling is straightforward. We book the sweep or inspection, show you what we find with camera evidence, and write a flat-price estimate before any repair begins. That’s our process across Lemay, from the dense pre-war grids to the newer edges of town.
Styles & brands we work with
- Sweep & inspection
- Caps & crowns
- Flue relining
- Masonry repair
- Gas fireplace service
Common Gelco Chimney Cleaning Problems We Solve in Lemay
Most Gelco issues we see in Lemay trace back to the same forces: sun, freeze-thaw, damp off-seasons, and 70-year-old clay flues that were sized for coal, not modern part-time wood or gas burning.
- Pitted, streaking stainless caps on south and west faces. Lemay’s exterior chimneys take the worst of St. Louis summer sun and winter freeze-thaw, and a stainless Gelco cap on those exposures pits, streaks, and loosens at the mounting legs over time.
- Seized top-mount dampers. Long damp off-seasons let a Gelco top-mount damper bind or seize, especially on fireplaces converted from wood to gas that rarely exercise the linkage. What worked last winter may not move this fall.
- Rusted or torn cap screens. Acidic, soot-laden condensate in an oversized or undersized 70-year-old clay flue eats cap screens, and once they tear, birds and rain get straight into the liner.
- Corroded fasteners and flashing collars. Where a Gelco cap meets spalled brick and a crumbling mortar crown, the fasteners and flashing collar corrode, and the cap stops sealing the flue.
- Water intrusion disguised as a draft problem. A cap that no longer seals lets water in, and that water works into the mortar and brick. A draft that won’t pull is often a cap problem in disguise.
Gelco Service in Lemay: What Local Conditions Mean for Your Equipment
Here’s the local reality that shapes Gelco work in Lemay. In the dense pre-war bungalow grids, the exterior brick chimney is usually the most weather-beaten element on the house. South and west faces spall, mortar joints crumble, and crowns crack from decades of summer sun and winter freezes. That means the Gelco cap or damper on top is often already failing by the time anyone looks up there. A homeowner notices water staining on the firebox or a draft that won’t draw, and an inspection typically finds a Gelco-style cap whose screen has rusted through and whose mounting legs have loosened on a spalled, crumbling crown. The usual cause is freeze-thaw and acidic soot condensate attacking the cap and mortar at the same time, made worse by an original clay flue oversized for modern part-time burning. A qualified local pro typically pulls the old cap, repoints or coats the crown, and installs a correctly sized Gelco replacement cap with fresh stainless fasteners and flashing sealed to the brick. That’s the kind of full-system work we do, and it’s why we inspect before we recommend anything.
Gelco Models & Products We Service in Lemay
We service the four main Gelco product types in Lemay: stainless steel multi-flue caps, top-mount damper assemblies, single-flue chimney caps, and rain caps and spark arrestor caps. When a cap is still sound, we repair it. When corrosion has reached the mounting legs, or the liner below needs relining anyway, we replace the assembly. We choose quality parts that fit your specific flue and crown, not whatever’s closest to hand. If your flue is oversized for modern use, the cap and damper need to match that reality, and we size accordingly. Our Gelco work stays honest to what your chimney actually needs.
See the difference
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AfterGelco Service Pricing in Lemay
We don’t publish a flat price list, because every Lemay chimney is different. A free estimate is what sets your final price, per job. What drives the cost: whether the cap can be repaired or needs full replacement, condition of the crown and brick, whether the liner needs relining, and how accessible the chimney is. A single-flue cap replacement typically costs less than a multi-flue cap on a chimney with two flues. Repointing a spalled crown adds to the job. When a cap is still serviceable, repair costs less than replacement, and we’ll tell you plainly when work can safely wait. Nothing gets recommended without camera evidence you can see for yourself. Call (866) 596-7310 for an exact quote; estimates are free.
Serving Lemay, MO – Our Local Coverage Area
We serve Lemay and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – Gelco Chimney Cleaning in Lemay
My Lemay bungalow has a Gelco cap that’s rusted and loose on a crumbling crown – can it just be resealed? Not usually. When the mounting legs are loose on a spalled crown, resealing alone won’t hold; the crown needs repointing or coating first, then the cap needs new stainless fasteners and sealed flashing. We’ll inspect and tell you whether the cap is still serviceable. Call (866) 596-7310 for an exact quote; estimates are free.
Why does my Gelco top-mount damper stick every fall in Lemay? Long damp off-seasons let the linkage bind, especially on fireplaces converted from wood to gas that rarely move it. We free, service, or replace the damper depending on its condition.
Is a Gelco multi-flue cap worth it on an older Lemay chimney with two flues? Yes, when both flues need protected coverage from one assembly. It simplifies sealing and keeps rain and birds out of both. We size it to your flues and crown.
My clay flue is oversized for my gas logs – does that affect which Gelco cap I need? It can. An oversized flue draws poorly and collects acidic condensate, so the cap and damper need to match the flue’s real behavior, not its original coal-era size. We’ll inspect and recommend the right fit. Call (866) 596-7310 for a free estimate.
How often should a 70-year-old Lemay chimney with a Gelco cap be inspected? Once a year is the baseline, and more often if you burn heavily or notice water staining or a weak draft. Older clay flues and sun-and-freeze-beaten caps fail slowly, so an annual look catches problems before they spread.
Service Areas Near Lemay
We serve homeowners across Lemay and the surrounding south St. Louis County communities, including St. Louis, Mehlville, Affton, Webster Groves, and Clayton. If you’re in one of these areas and need Gelco service, we can help.
Book Your Gelco Service in Lemay Today
If your Gelco cap or damper needs attention, or your Lemay chimney is overdue for its first real inspection, call (866) 596-7310. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday. Estimates are free, and we’ll show you what we find before recommending anything.
Written by the team at Hawk Chimney Sweep.