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 Cleaning in Catonsville, MD | Level Two Chimney Ellicott City
Chimney Cleaning & Sweep in Catonsville for Gelco systems runs $189 to $329 for a standard sweep with a Level 2 camera inspection included, and we’re the independent crew that does it right. The one thing that separates our Gelco work here: before we touch a brush, we put a camera down the flue and show you exactly what we found. That matters more in Catonsville than almost anywhere else in Baltimore County, because the tree canopy hides problems you can’t see from the ground. Call (443) 363-5262 for a written quote before any work starts.
We service Gelco sales & service equipment throughout the 21228 and surrounding zip codes. Level Two Chimney Ellicott City is an independent Gelco service provider. We are not manufacturer-affiliated. We are not an authorized dealer. What we are is a crew that has pulled apart enough Gelco terra cotta liners, rope dampers, and chase covers in this town to know exactly where they fail and what it costs to fix them.
Why Catonsville Residents Choose Us for Gelco Service
Corrine Halstead built this crew in Howard County, but the calls from Catonsville started coming years ago and never stopped. The housing stock here is different. The trees are different. The freeze-thaw on the Patapsco ridge is different. A sweep who knows Ellicott City stone foundations does not automatically know what a 1930s Frederick Road bungalow chimney does in February. We learned by doing the work.
Every Gelco job in Catonsville gets the same treatment: a named tech assigned before the day of service, a text when we’re on the way, and a camera run before any cleaning starts. If the liner has shifted at the joints or the damper is seized, you’ll see it on the screen before we quote a repair. That’s Clause 1 of the Haven Standard: written price, written scope, written warranty, before anyone picks up a tool. We also hold a Free Second Opinion policy. Bring us any competitor’s written estimate and we’ll tell you plainly whether the work they quoted is necessary.
Common Gelco Chimney Cleaning Problems We Solve in Catonsville

- Shifted terra cotta flue liner joints. Original Gelco liners from the 1920s and 1930s crack and shift at the mortar joints after a century of Patapsco ridge freeze-thaw. The gap lets flue gas and heat reach combustible framing. On Frederick Road bungalows, we regularly find interior plaster staining near the second-floor ceiling from exactly this.
- Seized or rusted Gelco rope-operated top-mount dampers. Maryland humidity and snowmelt corrode the hinge and tension spring over time. The damper either sticks half-open, which pulls heated air out of the house all winter, or the rope snaps and the damper drops into the throat. We replace these with exact-fit stainless aftermarket units when the OEM part is discontinued or weeks out.
- Rust-through on Gelco multi-flue chase covers. Leaf litter from Catonsville’s dense canopy sits on flat-top chase covers and holds moisture against the metal. On shaded Edmondson Avenue lots, we see rust pin holes along the cross-break within 10 to 15 years. A pinhole chase cover lets water into the chase, which eventually stains ceilings below.
- Clogged Gelco custom caps from canopy debris. Fine-mesh custom Gelco caps collect maple and oak leaves from Catonsville’s tree cover. A packed cap strangles draft, pushes smoke back into the house, and accelerates creosote buildup. We remove and upgrade to debris-resistant designs where it makes sense.
- Creosote buildup from low-draft conditions. The combination of a partially clogged cap and humid Maryland air means creosote forms faster here than in drier, more open suburbs. Class II and Class III creosote are common findings on our Catonsville sweeps, and Class III in particular is a fire hazard that needs mechanical removal, not just brushing.
Before
AfterGelco Service in Catonsville: What Local Conditions Mean for Your Equipment
Along the Frederick Road National Historic District, our inspections routinely document the same defect: original Gelco terra cotta flue liners installed in the 1920s and 1930s have shifted at the joints from a century of Patapsco ridge freeze-thaw, leaving open gaps that no smoke test from the roofline will catch. A Level 2 camera inspection shows them immediately. Here’s the connection most people miss: Catonsville sits at roughly 400 to 600 feet elevation on the ridge west of Baltimore. That means more snow, more ice, and more freeze-thaw cycles than the city gets. Each cycle pushes moisture into the mortar joints between liner sections. Water freezes, expands, and cracks the joint. Repeat that a few thousand times over 90 years and the liner sections physically separate. You can have a perfectly intact chimney crown and still have a liner with finger-width gaps three feet below the roofline. That’s not a hypothetical. We’ve photographed it on Edmondson Avenue, on Frederick Road, on the side streets off Ingleside. If you own a pre-1950 home in Catonsville with its original Gelco liner, this is the single most likely finding on your inspection. The good news: shifted joints can often be re-cemented or stabilized without a full liner replacement, if we catch them before spalling gets severe.
Last winter on Edmondson Avenue near the 800 block, our tech pulled a Gelco top-mount damper that had rusted through at the hinge, leaving a quarter-inch gap that let snowmelt drip into the firebox and stained the hearth. We replaced it with a stainless aftermarket unit and re-pointed the first three courses of flue liner where Catonsville’s freeze-thaw had opened a mortar joint to a finger-width gap. The owner’s follow-up Level 2 camera run looked cleaner than a new masonry checklist.
Gelco Models & Products We Service in Catonsville

We work on the full Gelco chimney product line that shows up in Catonsville homes: the unglazed terra cotta flue liner in standard 13×13 and 8×13 sizes you’ll find in pre-1950 masonry, stainless steel top-mount dampers with tension-spring and rope operation, multi-flue chase covers in galvanized or stainless flat-top with cross-break, and custom square and rectangular chimney caps with bird-screen mesh in aluminum or stainless.
Our Catonsville Chimney Repair policy is simple and we state it up front: for Gelco components, we always propose a functional repair first. Re-cementing a shifted liner joint. Replacing a seized rope damper with an exact-fit aftermarket stainless unit. We recommend OEM Gelco parts only for custom caps and chase covers where third-party dimensions rarely match. Otherwise, a quality aftermarket part beats a discontinued OEM one for longevity and cost. We stock the common sizes and configurations for fast Catonsville turnaround, so you’re not waiting on a factory shipment from out of state.
Gelco Service Pricing in Catonsville
A standard Gelco chimney cleaning and Level 2 inspection in Catonsville runs $189 to $329 for most single-flue homes. That includes the camera run, the cleaning, a written report with photos, and our documented photo record under Clause 4 of the Haven Standard. Multi-flue systems and larger custom caps run higher. Damper replacement, liner joint re-cementing, and chase cover repair are quoted separately after we show you the camera footage. You’ll know the exact price before we touch anything. A creosote buildup does not care how recently you had the flu, and neither do we. Call (443) 363-5262 for a free estimate, and ask about our Free Second Opinion if you already have a written quote from someone else.
Serving Catonsville, MD - Our Local Coverage Area

We’re based in the Catonsville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Gelco Chimney Cleaning in Catonsville
Because the crown is not what’s failing. Catonsville’s ridge elevation and freeze-thaw cycles attack the mortar joints between terra cotta liner sections from the inside of the flue, over decades. The crown can be perfectly sound while the liner joints below it have opened to finger-width gaps. Only a camera inspection catches it. If yours has shifted, we’ll show you the footage and quote a repair before any work starts. Call (443) 363-5262.
We replace the damper. A seized rope damper is rarely salvageable once the hinge or tension spring has corroded through, and a rebuilt OEM-unit costs more than a stainless aftermarket replacement that fits the same throat. Installation is straightforward and we stock common sizes. Call (443) 363-5262 for a written quote.
Neither, not until we’ve looked at it. Soaking packed leaf debris traps water against the metal and accelerates rust, especially on flat-top chase covers. Chipping at it can tear the mesh. We remove the cap, clear it properly, and check the underlying chase cover for pinhole rust before deciding whether to clean or replace. Call (443) 363-5262 and we’ll schedule it.
No. Our Level 2 camera inspection is included in the standard sweep price, and that price is the same whether we’re in Catonsville, Ellicott City, or Woodlawn. What changes is what we tend to find: Catonsville’s tree canopy and ridge climate produce more liner joint shift and more debris clogging than lower-elevation neighbors. The inspection cost doesn’t change. Call (443) 363-5262 for the current rate.
No. Gelco does not require OEM caps to maintain warranty coverage on your liner or other components, and most Gelco chimney warranties have expired anyway on the 20-plus-year-old systems we service in Catonsville. What matters is fit and material. We recommend OEM only where third-party dimensions don’t match; otherwise, a correctly sized aftermarket stainless cap at a lower cost is the better call. We’ll show you both options in writing.
Service Areas Near Catonsville

We cover Catonsville service area homes throughout 21228 and nearby neighborhoods. Our crews also work regularly in Gelco service in Woodlawn where the post-war ranchers have their own liner issues, and Gelco service in Ellicott City for the stone-foundation homes along the Patapsco. We take calls from Columbia, Milford Mill, and Randallstown as well.
Book Your Gelco Service in Catonsville Today
We’re booking Catonsville chimney cleanings and Level 2 inspections now, and we run a real calendar with named techs, not a call center. Call (443) 363-5262 and you’ll talk to a live person who can schedule a sweep, answer a parts question, or send a written estimate for your Gelco system before the canopy drops another winter’s worth of debris down your flue.
Written by Corrine Halstead, Owner at Level Two Chimney Ellicott City, serving Catonsville since 2009.





Before
After
Before
After