DIY Doctor UK DIY Forums

Hi, I'm currently doing as stated above. I'm installing a steam shower cubicle and sink. I'm going to be fitting a 1.5 bar pump also. My question is is 15mm qual-pex barrier pipe ok to use for this?(offer enough flow?) the temp rating is ok(2Bar@92c). currently there is 22mm pipe going to all taps. Also can I connect the hot water tap in the kitchen to this without there being a pressure drop in the bathroom?

I have concrete floors downstairs so having to bring pipe under floor upstairs, can i cut holes in joists to run pipes through? If so what sort of clearance is needed for expansion of pipes? 17mm or best to do 22mm?

Thanks in advance Paul

See our project on notching joists.