hammering

Hi, I managed to push two 15mm pex pipes through the underfloor space of a second floor. They go (on a straight run between two parallel joists) from a hole in the floorboard (18mm thick) under an existing radiator to another hole in the contiguous room's floorboard, ready to attach a new...

Hi, my friend has one of these boilers and for ages it has made loud vibrating noise on both Ch a hw. It also suffers from delayed ignite. She has very low funds and aware that a gas man needs to be called as it's very likely the burner needs replacing. The question is the Hammering and I am...