A chimney top damper fitted properly in Overtown
We show you how to open it before a fire and when it is safe to close it afterward.
- Owned and run locally
- Available for same-day service
- Fully licensed and insured
- Family owned and run
Signs a top sealing damper could help in Overtown
- Leaves or nesting on the smoke shelf
- Handle bracket loose in the firebrick
- Old damper plate stuck part-way
- Unclear open and closed positions
Jump to
From flue check to working damper in Overtown
Adapters for round flues and liners
Many top dampers are made for square or rectangular clay tiles. Round tiles, stainless liners and some solid-pack metal chimneys need an adapter to give the damper a proper base. Makers sell adapters for exactly those cases.
The adapter has to match both the damper and the flue. We measure the flue, identify its type and check the maker's list of compatible parts. The adapter appears on the estimate as its own item. On a lined flue, we also check the liner maker's instructions before anything is added to its top.
Screens and spark protection on damper caps
A top damper with its own cap may carry a mesh screen around the lid. That screen catches embers while the damper is open and keeps birds out. Some models ship with a stainless cap for exactly that reason.
The Florida Building Code has rules for spark arrestor mesh and cleaning access on masonry chimneys, and a damper cap's screen is checked against them. If you prefer a damper without a screen, we explain what that means for sparks and animals while the lid is open.
Corrosion on the frame and hardware
Top dampers are made from metals chosen to resist weather, often stainless steel or aluminum, but hinges, springs, fasteners and cables can still corrode over time. Corrosion at the hinge makes the lid stiff, and a rusted spring may not lift it fully.
We check each moving part on an existing damper. Where one component has corroded and the rest is sound, a replacement part may be enough. The estimate names the part and its source. If corrosion has spread through the frame, a new damper is the practical answer.
Damper cap or damper plus separate cap
You can often choose between a damper that includes its own cap and a damper that sits beneath a separate cap. A combined unit is one part to maintain. A separate cap may let you keep a sound cap you already have.
The right choice depends on the flue, the existing cap and the space above the tile. We look at all three and explain the tradeoffs. The estimate shows the route we recommend and what happens to the current cap, whether it stays, is adjusted or is replaced.
Looked at during a free damper inspection
- Product restrictions checked against the fireplace
- Crown condition around the flue
- Old hardware and debris hauled away
- Written record of the damper work
Top sealing damper FAQs for Overtown
Will a top damper lower my cooling or heating bills?
One maker's instructions say a closed damper keeps conditioned air from escaping up the flue. We do not promise a savings figure, because that depends on the house and how the fireplace is used. We recommend a damper for fit and function.
Does the damper also work as a chimney cap?
Some models include a cap and screen, while others are made to sit under a separate cap. We tell you which type we are proposing and whether your existing cap stays, comes off or needs replacing.
Can a top damper keep animals out of the flue?
When it is shut, the lid and gasket close the opening that animals use. It must not be fitted over an animal already inside, so we check the flue first. If something is living there, removal comes before the damper.
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Our team will contact you to arrange your inspection.
Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo