Clarify what you are expecting of them.
JBL were quick to respond to smoke backing up the chimney - we have one open fire. They suggested to replace the cowling on the open chimney with a cherry picker. When I got the bill, they'd replaced all 4 including 3 disused chimneys. Total bill £1000. My advice, check what they are planning to do before you let them loose.

Reply from JBL Roofing & Building Maintenance Ltd






