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Downstairs shower: pumped and 15mm pipes or mixer taps and 22mm?

Discussion in 'Plumbing and Central Heating' started by maidbloke, 29 Oct 2020.

  1. maidbloke

    maidbloke

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    I have a downstairs toilet with hot and cold water fed from CW tank in loft and HW tank in an upstairs bedroom in a pretty standard late 60's house.

    Plan is to add shower to downstairs toilet.

    Tanks to shower location pipe run is approximately 8m.

    Would I get away with A or do I have to do B?:

    (A) The easier option. Power shower (pump only does not heat) fed by existing 15mm pipework.

    (B) New 22mm pipes installed from tanks feeding mixer tap shower unit.

    Thanks :)
     
  2. terryplumb

    terryplumb

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    B is pointless.
    A is a good option.
     
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  4. dal5band

    dal5band

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    Try a push on shower hose on the existing basin taps to see what you get - you might find the existing 15mm is enough pressure downstairs, assuming cold tank is inloft. This will be at least 4m head - should be enough. Just upgrade all the valves to full bore.
     
  5. maidbloke

    maidbloke

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    Appreciate the advice, thank you both
     
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