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 Cap & Crown in Leesburg: What to Know First
Gelco chimney cap and crown work in Leesburg runs $340-$1,850 depending on whether we’re replacing a cap, rebuilding a spalled crown, or custom-fabricating for an odd flue size. Most Gelco cap-only jobs are done in one visit; crown work usually takes two because the mortar needs cure time before it sees weather. We’re an independent Gelco service provider, not an authorized dealer, which means we quote the repair honestly, including when an aftermarket part does the job better than OEM. If you own a Gelco cap that’s rusting through or a crown that’s crumbling, call (571) 601-3174 for a written price before anything gets touched.

How Gelco Products Fail - and How We Fix Them
- Gelco stainless steel caps, especially the standard single-flue models, fail at the screen-to-hood seam first. We see it constantly in Leesburg’s older neighborhoods: the spot welds pop loose after 8-10 winters of snow sitting on the hood and refreezing. The cap looks fine from the ground but the mesh is rattling loose. Fix: we remove the cap, re-secure or replace the screen, and reinforce the seam. If the housing is warped, replacement is cheaper than repair.
- Gelco multi-flue caps develop galvanic corrosion where the stainless base meets the aluminum banding. Two dissimilar metals plus Leesburg’s wet spring and summer humidity equals white powder and eventual rust pinholes right at the attachment points. It’s the most common reason a Gelco multi-flue cap that’s only five or six years old gets condemned. Fix: we swap to a same-dimension cap with stainless-to-stainless attachment, or replace the corroded banding if the base is salvageable.
- Gelco galvanized caps rust through at the top seam, not the base. Homeowners assume rust starts at the bottom where water pools. On Gelco’s galvanized line, the top rolled edge is where the coating fails first because that’s where the metal was stretched during stamping. We look there first on any Gelco cap older than five years. Fix: if the rust is surface-level, we can wire-brush and coat it. If it’s flaking through, it’s done. We’ll show you the photo before recommending either.
- Gelco chimney crowns, particularly the poured concrete crowns on their cap-and-crown combos, spall from freeze-thaw cycling. Leesburg gets dozens of freeze-thaw events per winter. Water seeps into hairline cracks, freezes, expands, and pops the concrete surface. What you see is pitting and exposed aggregate. What you don’t see is water working down into the brick below. Fix: we grind out the loose material, apply a polymer crown coat that flexes with temperature swings, and re-slope the surface so water sheets off instead of pooling.
- Gelco caps with adjustable flanges work loose on taller chimneys. The wind loading on a two-story chimney in an exposed Leesburg neighborhood is real, and the friction-fit flanges Gelco uses on some compact models can’t hold. The cap starts to lift, then sits crooked, then the flange warps. Fix: we mechanically fasten the cap to the flue tile with zinc anchors rather than relying on friction. It’s a five-minute change that prevents a call-back.
Our Gelco Chimney Cap & Crown Process

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You call, a person answers. We note the Gelco part, schedule a visit, and text you when our technician is on the way.
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Camera inspection first. We run the camera down the flue to check for damage behind the cap, not just what’s visible from the ground. The cap and crown protect the flue, but the flue condition determines whether the new cap needs special sizing.
- 3
We show you the footage and write the price. You see exactly what we see. We hand you a written scope with the part name, the labor, and the total before any work starts. If a Gelco OEM part makes sense, we use it. If a quality aftermarket unit fits better for a flue size Gelco doesn’t cover, we tell you and price it accordingly.
- 4
The work goes in. Cap and crown jobs are done without scaffolding in most cases. We set the cap, tool the crown, and check the fit with a flashlight and level before calling it done.
- 5
Post-work photo record. We photograph the finished install, including close-ups of the fastening points, and hand you the photos along with a written warranty.
- 6
365-Day Done Right Promise. If anything about the install fails within a year, we come back and make it right at no charge. That’s Clause 5 of the Haven Standard, and it applies to every Gelco job we do.
Before
AfterWhat Gelco Chimney Cap & Crown Costs in Leesburg
Here are the numbers we write on most Gelco quotes in Leesburg:
| Job | Typical Range | What Moves the Price |
|---|---|---|
| Gelco cap replacement (single flue) | $340-$620 | Flue size, roof pitch, accessibility |
| Gelco multi-flue cap replacement | $780-$1,250 | Width of the flue array, custom sizing |
| Gelco cap repair (seam or screen) | $145-$285 | Extent of corrosion, parts needed |
| Crown repair with polymer coating | $575-$950 | Square footage of crown, degree of spalling |
| Full crown rebuild on Gelco combo unit | $1,100-$1,850 | Form-and-pour vs. precast, roof access |
The honest price is written before work starts. Not after we’re on the roof. Not after we find something. Before. If you bring us a written estimate from another Leesburg chimney company, we’ll do a free second opinion and match or beat it when the scope is the same. Call (571) 601-3174 to get your number.
Why Leesburg Homeowners Call Level Two Chimney Leesburg for Gelco Work

Most chimney companies treat a Gelco cap like any other piece of metal on the roof. We don’t, because we’ve done more than 38,000 inspections since 2009 and Gelco products show up enough that we know their specific failure points. Corrine Halstead, our owner, has walked more Leesburg rooflines than she can count, including older homes near the Balls Bluff Battlefield area where the stonework and original clay-tile liners still turn up surprises. She trains every technician to show the customer the camera footage themselves and point out exactly what was found before any paperwork moves. We also work with DuraFlex and HeatShield systems, so if a Gelco cap or crown issue turns out to be a liner problem underneath, we can give you one written quote for the whole repair instead of sending you to another company. Our technicians are background-checked, uniformed, and arrive with their name on the ticket and a license number on the page. Every job gets a documented photo record under Clause 4 of the Haven Standard, written price before work starts under Clause 1, and the 365-Day Done Right Promise on completion.
FAQs
No. We’re an independent Gelco service provider, which means we can repair or replace Gelco caps and crowns, but any manufacturer warranty claim needs to go through Gelco directly. What we do give you is a written warranty on our labor and the parts we install, and we never void a Gelco warranty by using an improper part.
Most single-flue cap replacements are scheduled within a few days and done in one visit of about an hour to an hour and a half. Multi-flue and custom jobs take longer because the cap needs to be fabricated or special-ordered to the exact flue dimensions. Call (571) 601-3174 and we’ll give you a real time window for your specific Gelco model.
If the rust is surface-level or limited to the mesh screen, a $145-$285 repair makes sense. If the hood or the base is flaking through, a new cap costs less than chasing rust every other year. We’ll show you the camera footage and a close-up photo of the rust before you decide, so you’re making the call on evidence, not a salesman’s opinion.
The cap is the metal or mesh cover that sits on top of the flue and keeps rain, animals, and debris out. The crown is the concrete or mortar surface that caps the chimney structure itself and directs water away from the brick. Gelco makes both, and they fail differently: caps rust and come loose, crowns crack and spall. We price them separately so you only pay for the one that’s actually failing.
Have a look at the crown every fall before burning season starts and after any hard freeze. If you see cracks wider than a nickel or pitted, sandy-looking concrete, call us. The camera doesn’t lie, and neither does the price I write down before I start. For the cap, listen for rattling on windy days and check for rust from the ground with binoculars. Catch it early and you’re looking at a repair, not a replacement. Call (571) 601-3174 for a free estimate.
Written by Corrine Halstead, Owner, Level Two Chimney Leesburg at Level Two Chimney Leesburg, serving Leesburg and nearby areas.





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