Old houses show off their chimneys, and in a village with so many seventeenth-century buildings the stacks are part of the street. They are also the most exposed thing on any roof. They stand proud of the ridge, take every wind from every direction, and the line where a stack meets the slope is a place where rain gets a way in.
Q2.1What does a stack in trouble look like?
Mortar sanded away between the stones or bricks, a visible lean against the sky, white salts blooming on the masonry, and a damp patch on the chimney breast indoors. Any one of those says water is getting into the stack. A cracked flaunching, the sloping mortar crown that sheds rain and grips the pots, is the commonest culprit and the least costly cure.
Q2.2Can only the top of a stack be rebuilt?
Yes. When the lower courses are sound, we take the top section down to solid masonry and rebuild it in the same stone or brick, with new flaunching and, where required, fresh lead flashings and a tray. The house keeps its profile and you avoid the expense of a total rebuild.
Lead is a craft in its own right. It has to be dressed into the joints instead of stuck onto the face, and its weight, called the code, has to suit its position. Our chimney repairs page walks through the choices.
Removing the breast that serves a flue, inside the room, is an altogether different job. Building Regulations approval is always required, and a shared breast also brings in a notice to the neighbour under the party wall rules. Ask us and we will explain the sequence.
A stack sits high, so access matters. Whichever firm you ask about chimney work, find out whether its quote includes VAT and scaffolding.
If the house is listed, we check what the work touches before it starts, so that a chimney repair never becomes a consent problem.