Top-Sealing Damper Installation in St. Augustine, FL
Seal the flue at the top when the fireplace is not in use.
- Family run
- Locally owned
- Licensed and insured
- Same-day service
Get Your Free Inspection
Request Received
Got it, thank you. Expect a call from the family to book your free inspection.
Or call us at (904) 943-7482
Short version
A top sealing damper is a spring-loaded lid that mounts on top of the flue and seals against a gasket when closed. St. Augustine Chimney & Sons installs the chimney top damper at the crown, runs its control cable down to the firebox, and checks that it opens fully and seals tight.
Inspect First, Then Save 10%
Free inspection of the damper and flue. Book within 72 hours for 10% off.
Why Homeowners Call Us Back
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Family run
The company is run by one family, so the people who price the job are the people who answer for it.
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Upfront, honest pricing
The price is on paper before we start. If something changes, we ask before doing more.
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Workmanship warranty
Our workmanship warranty backs every repair we complete.
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Licensed and insured
Licensed and insured, with an experienced crew on every roof and hearth.
How a Chimney Top Damper Works
A top mount damper is a metal lid on a spring, fixed to the flue tile or the crown. A stainless cable runs down the flue to a handle in the firebox. Pull the handle and the lid closes against a gasket; release it and the spring opens the lid fully for a fire.
Because it seals at the top, the whole flue stays closed off from the outside air when the fireplace is not in use. Many models include a screen, so the damper also acts as a cap.
Top Sealing Damper Installation
Top sealing damper installation starts with measuring the flue and the crown. The damper is set on the flue tile or mounted to the crown with sealant and fasteners, following the damper maker's instructions. The cable is run down the flue and fixed in the firebox where it is easy to reach.
Chimney top damper installation is a good fix when the old throat damper is too damaged to repair, or when a fireplace is rarely used and you want it sealed most of the year.
Decorative Gas Appliances and Top Dampers
A fireplace that holds a vented decorative gas appliance must keep its damper fixed open, as that appliance's own instructions require. A top damper can still be fitted in that case, but it has to be locked open. We check what is in the firebox before recommending one.
What We Check For
- Rusted throat damper
- A top sealing damper replaces its job without rebuilding the throat.
- Musty air from the fireplace
- Humid outside air drifting down. A gasketed top damper seals it out.
- Debris in the firebox
- The flue is open at the top. A top damper with a screen closes it.
Parts and Materials We Use
- Stainless or aluminum damper
- Sized to the flue tile or crown.
- Silicone gasket and cable
- Seal the lid and open it from the firebox.
Repair or the Bigger Job
Request a Free Inspection in St. Augustine
- No-charge inspection, priced on paper
- Upfront pricing with no hidden fees
- Family owned and run
Request Received
Got it, thank you. Expect a call from the family to book your free inspection.
Signs This Work Is Due
An old throat damper rusts, warps and lets humid air and insects drift down the flue. A top sealing damper sits on the flue at the crown, closes with a rubber gasket, and opens with a cable that runs down to the firebox. It also works as a cap when closed.
- A throat damper that is rusted, stuck or missing
- Humid air or odor drifting from the fireplace
- Insects or debris coming down the flue
- A damper that never seals completely
What Sets the Price
- Flue size and shape
- Larger or unusual flues need bigger models.
- Crown condition
- A cracked crown may need repair first.
Proudly American
Owned and run by one St. Augustine family. Our experienced crew puts every estimate on paper and backs its repairs with a workmanship warranty.
Call Now (904) 943-7482Seal the Flue From the Top
Repair the old damper or fit a top sealing one? A free visit settles it.