Despite everything seeming to drain away well, and even though external drains were clear, a mysterious drains smell kept appearing intermittently in the bathroom.Several suggestions about the probable cause of it were made over a few weeks by people such as builders, engineers and a bathroom fitter. However Bob and Paul identified the actual source of the problem and cures for it within an hour.I was really grateful for their experience, friendliness and honest advice about how I could tackle the problem and keep costs down.Bob was recommended to me and I would wholeheartedly recommend him to others. read more