Chamber repair above the damper for homes in Weston

Lines a chamber repair estimate should show

A chamber repair estimate that states only a single figure tells you little about the work. Look for these lines, which show what the price covers and make proposals easier to compare.

Anything outside these lines, such as damper, firebox or flue work, is listed separately. Conditional items, such as brick that may prove loose once cleaned, are marked as such. Every line carries its own price before you approve anything.

• Cleaning of soot and glazed deposits
• Resetting loose or missing brick
• The refractory product and areas covered
• Smoke shelf repair and curing guidance

Rain landing on the smoke shelf

When the flue has no cap, rain falls straight down onto the smoke shelf and chamber walls. Guidance suggests the shelf helps keep that water out of the firebox, but the water still reaches the masonry above it.

Wet deposits on the shelf and staining on the chamber walls can point to an open flue. We explain what we see and whether a cap would help. Cap work is quoted separately, and chamber repair holds up better once the flue is covered.

What the chimney top shows of the chamber

Most chamber assessment happens from the firebox. Where the roof can be reached safely, a look down the flue adds a second view. It can show the lowest flue tile from above, debris sitting on the shelf, and how the flue meets the top of the chamber.

The view from the top does not replace the view from below, and it is not possible on every roof. We say which views we had and what each one showed. Anything neither view reached is listed as unseen rather than presumed to be in good order.

From a wide opening to a narrower flue

The building code sizes a fireplace flue against the area of the fireplace opening. The flue is much smaller than the opening, and the smoke chamber makes the change between them. Its sloped walls gather smoke from the width of the firebox into the flue.

Because the chamber handles that transition, its shape and surface affect how smoothly smoke is gathered. A chamber that meets the flue off center, or with a ledge at the top, can disturb that flow. We describe how your chamber meets its flue and whether parging can improve the joint.