Jase Posted February 20, 2021 Posted February 20, 2021 Hi folks doing the bathroom out upstairs only loo and sink in there at the mo so having a bath fitted with a mixer type shower now the room been made bigger . questions is can the bath be 15mm or does it have to be 22mm for flow rate etc. We have a new combi boiler fitted now. So hot tanks gone. Regards Jason.
Conor Posted February 20, 2021 Posted February 20, 2021 15mm is fine for a bath because your combi wouldn't be able to produce hot water fast enough to need larger pipe. That's exactly what I did when renovating our bathroom, ripped out the old 3/4" copper and replaced it with 15mm plastic pushfit. Took ages to fill a bath but that was because of the boiler, not the pipework.
Nickfromwales Posted February 20, 2021 Posted February 20, 2021 4 minutes ago, Conor said: 15mm is fine for a bath because your combi wouldn't be able to produce hot water fast enough to need larger pipe. That's exactly what I did when renovating our bathroom, ripped out the old 3/4" copper and replaced it with 15mm plastic pushfit. Took ages to fill a bath but that was because of the boiler, not the pipework. +1. 15mm will be ample.
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