We had an extension done about 11 years ago and have just found out that the boiler was wrongly installed on the boundary wall. the vent slightly overhangs into neighbour s property which is about 1metre away from their wall and the steam blows around near their door. The neighbours after all these years have decided to complain now..
Are the installers responsible? Surely, even after this time it is their fault due to it being fitted not inline with guidelines. Any help would be appreciated.