Chimney damper replacement in Avalon Park

Metal-to-metal and gasket seals

A cast-iron throat damper closes metal against metal. When both castings are flat and clean, that seal is good, but it rarely closes airtight. Many top-sealing dampers close against a gasket instead.

If air leakage between fires is your main complaint, tell us. Our damper pros explain what each style can realistically do on your fireplace, without promising more than the hardware delivers.

Whatever the style, a clean seat helps. Soot and debris on the seat keep any damper from closing well. We clean the seat during every damper visit and explain how to keep it clear between visits.

What happens to the old damper under a top damper

When a top-sealing damper is added, the old throat damper below still sits in the fireplace. It may be left open, fixed open or removed, depending on its condition and how the new damper is controlled.

We explain what will happen to the old plate before any work starts, so nobody in the house later closes a forgotten handle that no longer matters or leaves a loose plate to rattle. The plan goes in writing.

If the old throat damper is removed, the opening is checked and any rough edges are dressed. If it stays in place, we make sure it cannot swing shut by accident. Either way, you will know what the fireplace has and how to use it.

Finding the model of a factory-built fireplace

Factory-built fireplaces carry a rating plate with the maker and model, often on the inside of the firebox, behind a louver or on the smoke shield. The owner's manual lists the same details.

If you can find either one, tell us when you call. It speeds up the parts search for your damper. If you cannot, our technician finds the plate during the free inspection without pulling panels you cannot easily put back.

The model number also tells us how the damper is built into the unit, which affects how the part is replaced and what access we need. Knowing it in advance saves time on the repair day.

How a throat damper replacement goes

A throat damper replacement follows a steady order. We protect the room, remove the old plate and frame, prepare the seat in the throat, set the new damper and connect the control.

Then we test it, relay any firebrick that was disturbed and clean up the soot. Your written estimate lists these steps before you approve the work, and the handover sheet confirms them afterward.

Each step is done with care to protect the firebox and the room. If something unexpected turns up, we stop and explain it before continuing.

• Room and hearth protected
• Old plate and frame removed
• New damper set, connected and tested
• Soot cleaned and operation shown to you