When demolition is the right call
A chimney with severe structural movement, extensive brick failure, or one that's become genuinely dangerous is sometimes beyond economical repair, and taking it down safely is the more responsible choice.
Doing it safely
Demolishing a chimney means working at height around a structure that's already unstable, so controlled, methodical removal — rather than pulling it down — is essential to protect the roof and property below.
Making good afterwards
Once the stack is down, the roof needs proper making good — matching tiles or slates, flashing the old opening, and ensuring the roofline is watertight where the chimney used to be.