Andrew Pae
Hi Dean, as most chimneys exit through the roof, I would strongly recommend you advertise your job in the Roofer category. A roofer will have the experience and Health and safety for working at heights, also the access equipment required, and finally, to re-cover the void left by the original now removed chimney. The roof requires the correct materials to match existing, and they also require to be fitted correctly. Hope this helps. Andrew.