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 Chicago Loop, IL | Sandstone Chimney Sweep
We provide independent Gelco chimney cleaning, inspection, and repair service across the Chicago Loop, and our work here centers on commercial boiler flues, rooftop exhaust stacks, and restaurant grease ducts, not residential fireplaces. What makes our Gelco service different in the Loop is that we schedule around building-management access windows and routinely work off-hours, because that’s the only way to touch a flue system in a downtown high-rise. Call (833) 589-7835 to book an independent Gelco inspection with Norm Sobieski’s team at Sandstone Chimney Sweep. We are a Chicago-based Gelco sales & service provider, not a manufacturer arm, and we answer to the building owner, not the brand.
Why Chicago Loop Residents Choose Us for Gelco Service
We have cleaned and inspected Gelco sales & service systems across the Loop’s commercial towers and restaurant stacks for years, so we know how these units actually fail in a high-rise, grease-vapor and freeze-thaw environment. As an independent service provider, we diagnose and service Gelco equipment on its own merits. No manufacturer authorization, partnership, or warranty endorsement is implied, and we will tell you when a Gelco component is fine to repair in place and when it has reached the point where replacement is the safer call. Norm Sobieski, our owner, learned the mechanical trade through the HVAC and building systems program at Truman College and spent years doing residential and commercial chimney work across Chicago’s near-downtown and northwest neighborhoods before starting Sandstone. That background matters in the Chicago Loop, where every flue job has a code book attached and every roof access has a sign-in sheet.
Styles & brands we work with
Common Gelco Chimney Cleaning Problems We Solve in Chicago Loop
- Liner joints loosening or corroding on boiler flues. The Loop’s lakefront freeze-thaw cycle drives heavy condensation inside brick boiler stacks. Gelco stainless liner joints that see daily hot exhaust and nightly cold soak often loosen at the seams, and we re-seal or replace them before spalling in the surrounding masonry gets worse.
- Gelco chimney caps degrading on exposed rooftops. Rooftop caps in the Chicago Loop take brutal wind, rain, and thermal cycling. A multi-flue cap that detaches or corrodes lets rain and snowmelt straight down the flue, which worsens draft problems and accelerates liner condensation. We replace failing caps with Gelco-compatible units matched to the stack’s material and heat load.
- Creosote and soot compounded by grease vapor. In mixed-use Loop buildings with street-level restaurants, grease vapor migrates into shared venting and makes creosote and soot stick to flue walls far faster than in a residential chimney. This is a fire-code issue, not just a maintenance nuisance, because vertical ducts run through occupied floors.
- Damper and insert components seizing in intermittently used setups. Gas and wood-burning inserts in commercial or mixed-use Loop buildings often sit idle for months. Dampers rust, firebox components seize, and when the unit finally runs, draft is poor and the mechanism fights the operator. Gelco insert and damper parts are a routine repair call for us downtown.
- Obstructed draft from rooftop mechanical exhaust interference. Loop rooftop equipment rooms are crowded. A Gelco flue termination placed too close to a mechanical draft exhaust or fresh-air intake can lose draw, and we are often called to inspect and re-position or shield the termination to restore proper venting.
Gelco Service in Chicago Loop: What Local Conditions Mean for Your Equipment
Here is the thing most chimney-service pages miss about the Chicago Loop: there are almost no residential fireplaces here. The Loop is overwhelmingly commercial high-rise and institutional space, roughly bounded by the river on the north and west, Congress Parkway on the south, and Lake Michigan on the east. A Gelco chimney job in this ZIP code almost never means a wood-burning fireplace in a bungalow. It means rooftop boiler flues, mechanical-draft exhausts, and vertical restaurant grease ducts governed by Chicago’s building and fire codes. We schedule Loop work around building-management access rules and off-hours windows, because a vertical duct running through occupied floors cannot be opened during the lunch rush. The Gelco units we service here are typically tied to DHW boilers, kitchen exhaust, and building heating plants. Lakefront wind loads on State Street and Wabash Avenue stacks accelerate cap and termination failure, and the freeze-thaw condensation problem is worse in the Loop than in most of the city because of the lake’s humidity. So when we spec parts for a Loop job, we spec for marine-grade condensation, not a suburban fireplace’s occasional smoke load. A Gelco liner that would last two decades on a North Side home chimney may need joint work and re-sealing in less than half that time on a Loop boiler flue.
Gelco Models & Products We Service in Chicago Loop
We service the full range of Gelco product lines that show up in Loop buildings: Gelco stainless steel flexible chimney liner kits and liner components used inside boiler flues and vertical grease-duct retrofits; Gelco multi-flue and custom chimney caps and chimney caps with animal and rain guards, which we see on older brick stacks and rooftop terminations all over the Loop; and Gelco fireplace inserts and venting components in the handful of mixed-use and ground-floor commercial spaces that still burn wood or gas. We fit Gelco-compatible OEM parts where they are available and specify quality aftermarket liners, caps, and dampers when OEM is discontinued or overpriced, always matching material grade to the flue’s actual heat and condensation load. For most of the Loop we keep common liner-joint hardware, cap assemblies, and inspection-scope equipment on the truck, so a diagnostic visit usually ends with a repair plan, not a second appointment.
See the difference
Before
After
Before
After
Before
AfterGelco Service Pricing in Chicago Loop
Gelco chimney cleaning and inspection in the Chicago Loop typically runs from $250 to $600 depending on the stack height, the number of flues, and how much creosote, soot, and grease residue has accumulated. A Level 2 inspection with camera scope work is usually $200 to $400 when we are already on the roof for an access window. Cap replacement with a Gelco-compatible stainless multi-flue cap commonly runs $350 to $900 installed, and liner joint re-sealing starts around $300 to $600 per joint depending on access from the roof or chase. Lofted labor, building sign-in procedures, and after-hours or weekend scheduling all factor into the quote, and we give a flat price before any work begins. Call (833) 589-7835 for an exact quote, and we will put it in writing.
Serving Chicago Loop, IL — Our Local Coverage Area
We’re based in the Chicago Loop 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 Chicago Loop
Because restaurant exhaust is a completely different environment than a residential wood-burning flue, and in the Chicago Loop the vertical grease ducts run up through occupied floors. Grease vapor condenses on the Gelco liner walls, mixes with soot, and forms a fuel layer that is precisely what Chicago’s fire code targets for inspection and cleaning. A suburban fireplace might go a year or two between sweeps. A Loop restaurant duct that exhausts fryers or grills eight hours a day may need cleaning two or three times a year. Call (833) 589-7835 and we can review your kitchen’s hours and menu volume to set a schedule that keeps you ahead of code, not behind it.
Yes and no. A properly installed stainless Gelco cap is built for weather, but the Loop’s freeze-thaw cycle will test the mounting hardware every winter. The failure we see most often is not the cap body itself but the fasteners and the joint where the cap seats against the flue tile or liner. Lake-effect humidity and rooftop ice put constant stress on that connection. A cap that is re-seated and re-fastened every couple of years will outlast one that never gets looked at, and an annual fall inspection before the first hard freeze is the cheapest insurance on a Loop roof. A Gelco cap that is failing should be replaced before snowmelt starts running down the flue.
It depends on where the condensation is forming and how much of the liner’s joint or wall has been eaten. We can often re-seal loosened joints, replace corroded connector sections, and restore draft without pulling the whole liner, and we will say so plainly when that is the safe call. But if corrosion has thinned the liner wall across a long section or the flue itself has spalled behind the liner, patching it is not a repair, it is a delay. We will put a camera on it and show you exactly what we are seeing, then quote repair or replacement based on that evidence. Call (833) 589-7835 and we will schedule the scope work around your building’s rooftop access.
Yes. A large share of our Chicago Loop service area work happens before the morning rush or after the last table leaves. We coordinate directly with building engineers and property managers, handle access sign-ins, provide proof of insurance, and log the job for fire-code records when required. If your building requires an engineer escort or elevator lockout for the roof, we schedule for that from the first call. Off-hours and weekend work is routine for us in the Loop, not an upcharge. Call (833) 589-7835 and we will work from your building’s access sheet, not our convenience.
You ask us to do a Level 2 inspection and then you look at the camera footage with us. Repair is the right call when the Gelco component is structurally sound and the problem is a joint, a fastener, a warped cap, or a localized hot spot. Replacement is the right call when the liner wall has thinned from corrosion, the cap has separated from the flue, or the component is no longer safe under the heat and condensation load of your specific Loop system. The Loop’s rooftop boilers and grease ducts push less margin for error than a residential fireplace, so we lean conservative on anything that carries heat vertically through an occupied building. For a free estimate and a straight answer, call (833) 589-7835.
Service Areas Near Chicago Loop
In addition to our Chicago Loop service area, we provide Gelco service across Gelco service in Lincoln Park, as well as the Near North Side, Near South Side, and Gelco service in West Town. If your building sits a few blocks off the Loop proper, we still cover it as part of our downtown route, and we schedule the same way, around building access, never against it.
Book Your Gelco Service in Chicago Loop Today
If you have a Gelco flue, cap, liner, or insert in the Chicago Loop that needs an independent eye, call Norm Sobieski’s team at Sandstone Chimney Sweep. We will schedule the access, scope the system, and give you a flat quote before any work begins. Call (833) 589-7835 for a free estimate.
Written by Norm Sobieski, Owner at Sandstone Chimney Sweep, serving the Chicago Loop since 2002.