Metal fireplace and chimney repair in Oak Ridge

The damper in a factory-built fireplace

A factory-built fireplace has its own damper, a blade near the top of the firebox worked by a handle on the front face. In one maker's design, pushing the handle up through a keyway frees the weighted blade to open, and pushing it down locks the blade closed.

Bent handles, worn keyways and blades that stick open or closed are repaired with the model's own parts. We check how the damper moves and seals, and add damper work to the estimate only when it is needed.

• Handle and keyway
• Weighted blade
• Open and locked positions
• Seal when closed

A damper stuck open or closed

A damper blade that will not open fully restricts the smoke path, and one that will not close lets cooled indoor air escape up the chimney between fires. In a factory-built unit, the fix depends on the model's own handle, blade and weight parts.

We check whether the trouble is rust, a bent part or a missing piece, then order the matching part. If the damper belongs to an assembly marked not field replaceable, we tell you before discussing other options.

Offsets and elbows in the chimney

Factory-built chimneys can jog sideways with elbows, within limits. Section R1005.7 keeps every piece of a factory-built chimney within 30 degrees of vertical and allows four elbows at most in the run.

One maker's manual adds its own rules for the length of angled pipe between supports and for the straps that carry the weight above an offset. When a chimney has been rerouted, we check it against both before any repair.

Comparing prefab repair quotes

Two quotes for the same prefab repair can differ because one names listed parts and the other names generic replacements. The words to look for are the maker, the model and the part numbers.

Ours names each of them. If another quote uses a universal panel or a pipe section from a different system, ask how it fits the listing, since that question separates a repair from a patch.

• Maker named
• Model and serial number named
• Part numbers listed
• Generic parts flagged