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Top Sealing Damper Cap Installation and Repair for Your Home
Seal the top of your flue with an energy saving damper that keeps heat in, cold drafts out, and rain and animals off your chimney. We install and repair top mount damper caps for homeowners across New York City and Long Island.
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Licensed and Insured
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Free Same Day Estimates
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Lifetime Warranty
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Emergency Service 24/7
OVERVIEW
A Tight Seal at the Top of Your Chimney
A traditional throat damper sits low inside your fireplace and rarely closes tight, so warm air escapes up the flue all winter and cool air leaks out all summer. A top sealing damper solves that. It mounts at the very top of the chimney with a durable gasket that presses shut when you close it, giving your home an airtight seal and a lower monthly utility bill. That single upgrade is why so many homeowners describe a top mount damper as an energy saving damper first and a chimney accessory second.
Because it caps the flue, a chimney damper cap also does the job of a standard chimney cap. It keeps rain, snow, debris, leaves, birds, squirrels, and other animals out of the chimney while it is closed, and it opens just as easily when you want to enjoy a fire. That protection matters in New York City and Long Island homes, where wind driven rain and nesting animals are two of the most common causes of chimney damage and indoor odors.
Think of a top mount damper as three products in one: a weather tight cap, a year round energy saving damper, and an animal guard. When it closes at the top of the flue rather than at the throat, it stops the constant flow of conditioned air that a low mounted flap can never fully block, which is exactly why it lowers heating and cooling costs season after season.
- 20+ Years in Business
- 1,000+ Projects Completed
- Free Same Day Estimates
- 24/7 Emergency Service
WHEN YOU NEED IT
Signs You Need a Top Sealing Damper Cap
A top mount damper solves several problems at once. These are the reasons homeowners call us for one.
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You want to lower heating and cooling costs
A top mount damper seals the top of the flue so the conditioned air you pay for stays in your home instead of drifting up the chimney.
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Your existing top damper has failed or leaks
If the seal no longer closes tight, it is time to replace it with a new energy saving damper that shuts completely.
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You feel a cold draft from the fireplace
A tight top seal stops cold air from pouring down the chimney and into the room, so the space near the hearth stays comfortable.
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You smell smoke, soot, or a musty odor
Odors travel down an open or leaking flue. A chimney damper cap that closes airtight blocks that path and keeps your living space fresh.
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You want a cap and a damper in one
A single top sealing damper closes off the flue and keeps out rain and animals, so you do not need a separate chimney cap on top.
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You hear or find animals in the chimney
When a top mount damper is closed, it seals the opening that birds, squirrels, and raccoons use to get in and nest.
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Your damper opens but will not seal
When the gasket or the control cable on a top damper has worn out, we repair the mechanism and restore a full, airtight close.
OUR PROCESS
How We Install and Repair Your Damper Cap
01
Free Same Day Estimate
We visit your home, look at the current damper, and give you clear up front pricing with no surprises.
02
Measure and Assess
We measure the flue, inspect the crown and the existing seal, and confirm whether a single flue or multi flue damper cap is the right fit for your chimney.
03
Prepare the Right Parts
We select and prepare a correctly sized damper cap and gasket matched to your flue so it delivers a proper, weather tight close.
04
Install or Repair
We protect your roof and hearth, mount or repair the damper, run the control cable down to the firebox, and keep the work area clean from start to finish.
05
Test and Clean Up
We open and close the damper with you, confirm the seal is tight, tidy the work area, and show you how to operate it before we leave.
COMPLIANCE
Installed Right and Documented for You
CODE
Certified Technicians
Installed or repaired to code by certified, licensed technicians.
TESTED
Full Open, Tight Close
Tested on site to confirm a full open and a tight, airtight close.
CERTIFICATE
Issued With Your Warranty
Documented with your certificate and a lifetime warranty for your peace of mind.
WHY US
Why Homeowners Choose Us
Sized to Your Exact Flue
Every top sealing damper we install fits right and seals tight for years.
Free Same Day Estimates
Clear up front pricing, so you know the cost before we begin.
Same Day Appointments
And 24/7 emergency service when you need help fast.
Certified, Licensed, and Insured
Technicians who treat your home with care.
We Protect Your Home
We cover your roof, hearth, and floors and leave the work area clean.
Lifetime Warranty
And a certificate of cleanliness and functionality after every job.
WHO WE SERVE
Homes We Work On
We install and repair top sealing damper caps for homeowners in every kind of home, from classic brownstones to newer condos. Whatever your chimney looks like, we have a chimney damper cap solution that fits.
- Single family homes
- Townhouses and condos
- Brownstones
- Row houses
- Multi family homes
- Historic homes
- Apartments
- Vacation homes
Schedule a Free Estimate
Serving Brooklyn, Manhattan, the Bronx, Queens, Staten Island, and Long Island.
OUR WORK
Recent Damper Cap Projects
- Venting and Exhaust Fans
Chimney Exhaust Fan and Electrical Installation
A rooftop chimney exhaust fan with its own electrical supply line, run in weather-resistant conduit and mounted cleanly to the masonry.
- Crowns and Caps
New Chimney Crown, Clay Flue Extension and Cap Installation
A new weather-resistant crown, an extended clay flue and a stainless steel cap to keep water, debris and animals out of the chimney.
REVIEWS
What Our Clients Say
Mike S.
Chimney Professionals did a terrific job cleaning my two wood burning fireplaces in a Manhattan brownstone. They came within one day. Their equipment is state of the art, and it was all done in less than 30 minutes. Everything kept spotless. The price was right too.
1 Mar 2026
M. J.
Not only did they answer right away, they had Rod at my door first thing Monday morning and sourced a hard to find part same day when others could not. They beat every other quote I got and had our system back up and running in under an hour.
27 Oct 2025
Bruce S.
The chimney in my 115 year old brick rowhouse had a badly deteriorated terra cotta lining. Michael gave me a fair price, was punctual, and while spending more time than he expected, stuck to the original price. Kudos to Michael for getting a tricky job done.
2 Nov 2025
Jim S.
Mike and his team are phenomenal. Very quick to respond and schedule and then more importantly, absolute professionals. Deep cleaned the chimney and made sure they cleaned any residual dust around the area.
13 Nov 2025
Ryan L.
Our building needed three new liners for each apartment. They did a great job with the removal and new installation. Mike was very easy to work with, and very responsive with any follow ups.
10 Aug 2025
Donna L.
Chimney Professionals were prompt, professional and neat. We would recommend them to anyone looking to get their fireplaces cleaned. A pleasure to work with.
3 Dec 2025
Alan H.
We asked them to inspect our roof and chimney before an upcoming home inspection. They explained every detail clearly, helped us understand what needed fixing, and even assisted with budgeting.
10 Dec 2025
Baktiar M.
Same day service, quick and efficient. Used drones to check the chimney and provided a report. Definitely recommend.
25 Feb 2025
Kara T.
They were able to come out next day and fix our gas fireplace issue. They listened to all of our concerns and addressed any questions we had while thoroughly explaining the work that needed to be done. The price was fair and upfront.
15 Nov 2024
Brandon G.
Mike set up an appointment for the next day to clean our dryer vent. He maintained good communication the whole time. The technician who arrived was professional and did a thorough job. The price was reasonable too.
23 Aug 2025
FAQ
Damper Cap Questions, Answered
It is a damper that mounts at the top of your chimney instead of down in the firebox. A gasket lets it close airtight, so it seals far better than a traditional throat damper and works as an energy saving damper year round.
A throat damper is a metal flap low in the fireplace that rarely closes tight. A top mount damper seals at the top of the flue, which stops air loss and keeps out rain and animals.
Yes. By sealing the flue when the fireplace is not in use, an energy saving damper stops heated and cooled air from escaping, which reduces your monthly utility costs and pays for itself over time.
No. A chimney damper cap works as a cap and a damper in one. When closed, it blocks rain, debris, birds, and animals from entering the flue.
Yes. If the gasket or the control cable has failed and the damper will not seal, we repair the mechanism and restore a full, airtight close instead of replacing the whole unit.
Common signs are a cold draft near the fireplace, higher heating or cooling bills, rain or animal noise in the flue, or a damper that opens but will not close all the way. Any of these is a good reason to have us take a look.
The number of flues, the size and shape of the flue, whether you need a new installation or a repair, roof access and chimney height, and the condition of the crown and flue. We walk you through all of it during your free same day estimate.
Open it fully before every fire and close it only once the fire is completely out and cool. Have your chimney inspected once a year so we can check the gasket, clean the seat where the damper closes, and confirm the seal is still airtight.
With an annual inspection and a simple gasket check, a quality top mount damper lasts for many years. We back our work with a lifetime warranty for your peace of mind.
Most residential damper cap installations are completed in a single visit. We confirm the timing during your free same day estimate.
Ready to Seal the Top of Your Chimney?
Get a free same day estimate on a custom top sealing damper cap, installed or repaired by our certified technicians.