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 Haverhill: What to Know First
Gelco chimney cap and crown work in Haverhill usually runs $320 to $680 for a standard cap replacement, and $480 to $1,150 when the crown itself needs rebuilding. We’re an independent Gelco service provider, not a factory shop, which means we tell you straight when a part can be salvaged and when it can’t. Most Gelco jobs take one visit, two to three hours, and you’ll have the camera footage to see exactly what we saw.

If you own a Gelco cap or crown somewhere in Haverhill, from Bradford to Riverside, this page is for you. Call the shop at (978) 724-7935 and you’ll get a live person. Might be Wendell himself.
How Gelco Products Fail - and How We Fix Them
Gelco builds solid caps and crowns. But every brand has its habits, and we’ve been on enough Haverhill rooftops to know what Gelco owners run into. Here’s what we see most, model by model.
- Gelco Draft King caps and the northeast wind. The Draft King line has a fixed hood design that’s great for down-drafting until a nor’easter drives rain sideways for three days straight. The hood’s mounting tabs take the brunt of it. We see tab fatigue on caps that are only six or seven years old, especially on chimneys near the Merrimack where wind comes off the water with nothing to slow it down. The fix is usually a tab reinforcement and re-seal, not a whole new cap. We’ll show you the wiggle on camera before we touch a bolt.
- Gelco Multi-Flue caps and mortar crown erosion. Multi-flue caps sit on a wider footprint, which means the crown underneath carries more load, and Haverhill frost cycles do the rest. When the crown’s top edge starts spalling, the cap’s corner brackets lose their grip. You’ll hear it first: a light metallic rattle in a windstorm. We rebuild the crown edge, reset the cap, and seal the bracket seats. Nobody from a national outfit is going to get up there with a caulk gun and explain why this happens. We will.
- Gelco stainless mesh and creosote glaze. Gelco uses a fine stainless mesh on many of their caps. Good for sparks, bad if you burn green wood or haven’t swept in a few years. The mesh loads up with creosote, restricts draw, and your fireplace starts smoking back into the living room. The cap isn’t broken. It’s clogged. We clean the mesh, check the flue, and tell you if you’re burning something that’s gumming up the works. In a lot of Haverhill homes with older fireplaces, the mesh needs a soak and scrub every fall. Not a replacement.
- OEM vs. aftermarket parts on Gelco work. Gelco’s warranty language gets touchy if a non-Gelco replacement part is used. We’re careful about this. For caps that are still under factory warranty, we quote OEM Gelco components and keep the paperwork clean so your warranty isn’t voided by a shortcut. For out-of-warranty caps, we’ll quote a quality aftermarket part when it’s genuinely as good or better. You’ll see the difference in the quote, and we’ll tell you which one we’d put on our own house.
- Gelco stainless crowns and the Bradford squirrel problem. It’s not in the manual, but it’s real. Gelco’s stainless crown caps have a seam where the mesh meets the base plate. Squirrels in the Bradford and Kingsbury neighborhoods have figured out they can pry that seam just enough to get a toehold, and once one gets in, it’s a nesting site. We re-crimp the seam and add a stainless band where needed. Simple fix, but only if the sweep actually looks at the seam instead of glancing at the cap from the driveway.
Our Gelco Chimney Cap & Crown Process
Here’s what happens when you call us about a Gelco cap or crown in Haverhill.
- 1
You call and talk to a person. Wendell or one of the crew answers. You describe what you’re seeing or hearing. We give you a straight price range over the phone, no games.
- 2
We walk the roof and the flue, then show you the camera footage. Before we touch anything, we photograph the cap, the crown, and the top section of flue. You see what we see. No “trust me” moments.
- 3
We make the parts call together. If the cap is under Gelco warranty, we quote OEM. If it’s out of warranty, we’ll lay out OEM versus a good aftermarket option and let you choose with real numbers in front of you.
- 4
The repair happens the same visit whenever possible. Most cap and crown jobs are one trip. We carry common Gelco mounting hardware and crown materials on the truck, so we’re not rescheduling you because we forgot a bracket.
- 5
We clean up and test. Cap seated, crown sealed, mesh clear. We test the draw with a smoke pencil while we’re up there, then sweep up whatever came off the chimney. The only sign we were there is the fixed cap.
- 6
You get the 90-Day Done Right Promise in writing. Every Gelco job gets the same guarantee as everything else we do. If it’s not right, one call brings Wendell back, no charge.
What Gelco Chimney Cap & Crown Costs in Haverhill
Straight numbers, the way we work:
- Gelco cap replacement (standard single-flue): $320 to $480 installed, depending on model and roof access.
- Gelco multi-flue cap replacement: $520 to $760, including bracket reseating.
- Crown repair (minor spalling, crack fill, re-seal): $180 to $300.
- Full crown rebuild with form and pour: $700 to $1,150. This is where a crown has gone past patching and needs to be re-formed.
- Mesh cleaning and cap re-seal: Usually included with a cleaning, around $120 to $160 on its own.
What moves the price? Roof pitch and chimney height, whether the crown needs a small patch or a full rebuild, and whether we’re using OEM Gelco parts or a quality aftermarket part. You’ll get the exact number before a single tool comes off the truck. Call (978) 724-7935 for a free estimate. No trip charge inside our service county.
Why Haverhill Homeowners Call Top Hat Chimney for Gelco Work
We’ve been climbing Haverhill roofs since 1999, long enough that plenty of homeowners know Wendell by name and plenty more know the truck. We’re not a franchise that rotated in last spring and won’t answer the phone when the first freeze hits. We put our license number and our address on the work. You’ll run into us at the hardware store on Washington Street. That changes how a job gets done.
Every Gelco cap and crown repair carries the 90-Day Done Right Promise in writing. If it’s not right, one call brings Wendell back. That’s the whole promise. We also work with DuraFlex and HeatShield for liner work, so if a Gelco cap repair turns up something deeper in the flue, we can handle it that same visit instead of handing you a referral to someone you’ve never met.
And if the job doesn’t need doing, we’ll tell you that too.
FAQs
No. Gelco’s warranty covers manufacturing defects, not who installs or services the cap. What can void a warranty is using non-Gelco parts on a cap that’s still under factory coverage. That’s why we quote OEM Gelco components on in-warranty work and keep the paperwork straight. On out-of-warranty caps, we’ll show you an aftermarket option when it saves you money without costing you quality. Call (978) 724-7935 if you’re unsure what your cap’s warranty status is. We’ll help you figure it out.
Common Gelco mounting hardware, brackets, and hardware kits are usually in our truck or at the supplier the same week. Obscure model-specific pieces can take a week to ten days. If your cap has failed and the part is backordered, we’ll give you a straight answer about whether a temporary fix is safe and worth doing, or whether you should wait for the right part.
Plenty of Gelco caps get repaired, not replaced. Mesh cleaning, seam re-crimping, tab reinforcement, and re-sealing the base are all honest repairs that add years to a cap. We replace when the metal is fatigued past the point where a repair will hold, or when the cost of labor to patch it outweighs the price of a new cap. We’ll show you the camera footage and let the evidence make the call.
Water gets in. Water in the flue mixes with creosote and turns acidic, which eats at the flue liner and the mortar joints. A cracked crown lets water sit on the brick shoulders of the chimney, and Haverhill’s freeze-thaw cycles turn that water into a masonry problem that costs thousands. A $400 cap replacement beats a $4,000 rebuild every time. Call (978) 724-7935 for an exact quote. Estimates are free.
Written by Wendell Pike, Owner, Top Hat Chimney at Top Hat Chimney, serving Haverhill and nearby areas.





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