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.
Before
After
Before
After
Before
AfterWhy Leesburg Homeowners Choose Gelco Chimney Cleaning
Leesburg Gelco service for chimney cleaning means staying ahead of freeze-thaw damage and accumulating creosote in both the town’s colonial-era masonry flues and the 1990s prefab systems ringing the historic core. We’re an independent Gelco service provider - not factory-authorized, and we say that plainly - which means we diagnose what’s actually failing in your flue, not what a manufacturer’s warranty manual wants us to sell. If you own a home with a Gelco liner or vent, call (571) 601-3174 and we’ll schedule a camera-scan inspection with a written price before any work starts.
Why Trust Level Two Chimney Leesburg for Your Gelco Chimney Cleaning?
Our crews have pulled, inspected, and reinstalled more Gelco 316L flexible liners, rigid stainless segments, hybrid systems, and pellet vent liners than most Northern Virginia shops will see in a decade. We know the difference between a liner failing from acidic condensate and one failing from an installer who skipped the pull cone. That distinction matters when you’re staring at a $4,800 replacement quote and wondering if the original contractor cut corners.
Corrine Halstead, our owner in Leesburg, trained in building trades and heating systems before spending years working through every flue configuration the Northeast could throw at her. She’s the one who walks customers through the camera footage, pointing to the exact pinhole or kinked seam and explaining what it costs to fix before any paperwork moves. The camera doesn’t lie, and neither does the price she writes down before she starts.
Every Gelco job we do in Leesburg includes the same standard: a documented photo record under Haven Standard Clause 4, a written warranty delivered before work begins under Clause 1, and our 365-Day Done Right Promise. If it’s not right, we make it right. Background-checked, uniformed technicians arrive on schedule - with a text when they’re on the way - and our live phone support answers 24/7.
Common Gelco Chimney Cleaning Problems We Fix in Leesburg
- Pinhole corrosion in Gelco 316L flexible liners after oil-to-gas conversion. When a furnace or boiler switches from oil to gas without a properly sized liner, the cooler gas exhaust creates acidic condensate inside the flue. That condensate eats through thin spots in the 316L alloy within three to five years. We find this regularly in Leesburg neighborhoods like Potomac Crossing and Lansdowne on the Potomac, where homes from the 1990s are hitting their second heating-system replacement.
- Kinked or collapsed Gelco flex liners from improper installation. Flexible liners pulled through offset clay tile without a pull cone develop a seam split or a full kink at the bend. The symptom: smoke rollout on cold starts and CO readings that spike within the first ten minutes. In older Leesburg homes near Balls Bluff, where original clay-tile flues have settled off-axis, this shows up more often than anyone wants to admit.
- Detached insulation sleeves on Gelco hybrid liners. The insulation sleeve separates from the flex core, creating an air gap that concentrates creosote in one spot and creates hot spots on the liner wall. We see this in the 20- to 30-year-old prefab fireplace units throughout Leesburg’s late-1990s subdivisions - Majestic, Heat & Glo, and Superior units whose owners still think they have a relineable masonry chimney.
- Low draft on modern Gelco wood-burning inserts due to overfilled flue diameter. A liner too large for the appliance kills draft velocity. The fire burns lazy, creosote builds fast, and the homeowner gets smoke in the living room every time they open the door. Correct sizing - not just code minimum - fixes it.
- Rust streaks on Gelco 316L liner showing through first inspection. Two years in, rust streaks mean one of two things: either the liner is seeing condensate it shouldn’t, or the steel wasn’t 316L to begin with. We’ve pulled liners in Leesburg that were sold as Gelco but had the alloy stamped of a cheaper 304 blend. We photograph what we pull so you can see the difference.
BeforeAfterGelco Parts & Our Repair-vs-Replace Approach
We source genuine Gelco components when they’re available. But some Gelco liner segments have been discontinued, and for those we use aftermarket 316L and AL29-4C stainless that match or exceed OEM wall thickness. We’ll tell you which one is going in and why, and the price difference lands on the written estimate before anyone starts.
The honest repair-vs-replace line is thickness. When we camera-scan a Gelco liner and find corrosion depth past 30% of wall thickness, we recommend replacement. Patching a liner that far gone is false economy - you’ll be back in our schedule in two years with the same problem, now worse. But a liner with surface rust, an intact seam, and wall thickness holding at 85% or better is a clean, repairable flue. We’ll clean it, coat it if warranted, and write the warranty on what we did.
For Leesburg homeowners staring at a competitor’s written quote, our Free Second Opinion applies. Bring us the paperwork and we’ll camera-scan the same flue and give you our written number. Call (571) 601-3174 to set it up.
Our Gelco Service Process - Step by Step
- 1
Diagnosis. A camera goes down the Gelco liner and records everything. We’re looking for the failure modes above - pinholes, kinks, seam splits, detached insulation - plus creosote class and any water entry at the cap or flashing. You watch the footage with us.
- 2
Repair or replacement. We write the scope: what’s being repaired or replaced, which parts (genuine Gelco or aftermarket 316L/AL29-4C), and the exact price. You sign before we start. Nothing happens without that signed, written number.
- 3
Test. After the work, we run the system and take CO readings at the appliance and at the liner termination. If it’s a wood-burning system, we check draft with a manometer. You see the readings before we leave.
- 4
Warranty. Every Gelco job gets a written warranty under Haven Standard Clause 1, plus our 365-Day Done Right Promise. The photo record becomes part of your permanent file, so next year’s inspection starts with a baseline, not a guess.
Gelco Products We Service & Install in Leesburg
We service and install the full Gelco chimney product range: Gelco 316L Flexible Chimney Liners, Gelco Rigid Stainless Steel Liners, Gelco Hybrid Liners, and Gelco Pellet Vent Liners. We stock common connector sizes and top plates locally for fast turnaround, and for less common lengths we order directly through our supplier network. If you have a Gelco liner installed and want a second opinion on its condition, or you’re considering one for a reline, we’ll walk you through what fits your appliance and your flue - in writing, with a price.
We Also Service These Brands
Gelco isn’t the only liner we work with. We regularly service and install DuraFlex and HeatShield systems, and we’re equally comfortable with masonry relines, cast-in-place systems, and the full range of prefab fireplace replacements found throughout Leesburg’s 1990s and 2000s subdivisions.
FAQs - Gelco Chimney Cleaning Service in Leesburg
No. Rust streaks on a two-year-old Gelco 316L liner are not normal and typically indicate either acidic condensate from an improperly sized flue or a liner that isn’t actually 316L alloy. We’ll camera-scan it, measure wall thickness, and tell you exactly which failure you have. If the liner is compromised, we’ll write a replacement quote before we leave - call (571) 601-3174.
A Gelco rigid stainless liner can sometimes be repaired section-by-section when the damage is isolated - a single corroded joint, a cracked seam, or a mechanical puncture from installation. But in Leesburg’s freeze-thaw climate, section repairs on rigid liners often fail within a few seasons because temperature cycling stresses the repair point. We’ll give you an honest read on whether a section fix will outlast the mortgage or whether full replacement is the only economical answer.
Vibration in a Gelco pellet vent liner at high fan speed almost always points to a loose joint, a disconnected support bracket, or a liner section that’s made contact with surrounding framing. The fix is usually fast - secure the liner, replace a gasket or joint clamp - but it’s worth addressing quickly because a loose pellet vent joint is exactly where exhaust gas can escape into the home. Call (571) 601-3174 and we’ll diagnose it.
Gelco doesn’t publish a manufacturer-specific creosote removal protocol, but for 316L flexible liners we use rotary cleaning with poly brushes sized to the liner diameter, never metal scrapers that can score the alloy and create future corrosion points. After cleaning, we camera-scan the full length to document what came out and what remains. That photo record is part of every job under Haven Standard Clause 4.
Yes. A Gelco liner without a proper top plate and rain cap is a safety problem. The top plate seals the flue from water entry and provides the mechanical anchor for the liner’s upper termination. Caulk alone fails in Leesburg’s freeze-thaw cycling, letting water run down the outside of the liner and into your chimney chase or masonry. We’ve repaired enough caulk-only installs to know they all leak eventually. We’ll pull the old termination, install the correct top plate and cap, and write the warranty.
our Chimney Cleaning & Sweep services for Gelco systems in Leesburg typically run $219 to $389, depending on liner length, creosote class, and whether we’re also doing a camera-scan inspection (which we always are - it’s included under Haven Standard Clause 4, not an add-on). A full replacement of a corroded Gelco liner runs $2,800 to $6,200 installed, and we’ll show you the camera footage that justifies it. Call (571) 601-3174 for a written quote - estimates are free.
Book Your Gelco Service in Leesburg, VA
If you have a Gelco liner or vent in Leesburg, get the camera-scan inspection that tells you exactly what’s going on inside it. Live phone support is answered 24/7. Call (571) 601-3174 for a free estimate and a written price before any work starts.
Written by Corrine Halstead, Owner at Level Two Chimney Leesburg, serving Leesburg and Loudoun County chimney owners since 2009.