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Hello all, Does anyone have previous experience of noisy Potterton boilers (Promax Ultra Combi 28 ErP)? Intermittently this will let out a deafening long howl after it reaches temperature (immediately prior to the howl it sounds like an aeroplane descending). This can come and go during times...

Hi all, I'm just in the process of replacing some patio doors on a 1950's house. I'm unsure as to whether or not the outside course of bricks require a lintel installing after removal of old door frame. There is already a concrete lintel in place on the inside skin, which appears to span the...