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Geberit or Grohe concealed cisterns for our new build?

Discussion in 'Plumbing and Central Heating' started by RigidRaider, 5 Apr 2020.

  1. RigidRaider

    RigidRaider

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    I've just discovered yet another leaking bottom flush pipe seal on a concealed Geberit cistern, which is especially annoying as we are about to market this house and I think I may have to break through the plasterboard behind the pan to replace it. Luckily I bought spares last time it happened in the downstairs WC.

    Google says this and the blistered silicon flush piston seal is common and it also says Grohe pans suffer the blistered flush seal problem (easily replaced) but it doesn't mention the leaky flush pipe seal with Grohe cisterns. Is the Grohe flush pipe seal better designed than the Geberit seal? Which is the better cistern?
     
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  3. Elkato531

    Elkato531

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  4. duffin

    duffin

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    For some reason, geberit grey seals blister, but the newer clear ones dont. Go for the fluidmaster one as previous post.
     
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  5. RigidRaider

    RigidRaider

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    Bad news.... the new clear ones do blister. I've just changed one.
     
  6. ReJect

    ReJect

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    That is disappointing! First I heard that the new Geberit silicone rubber seals blister. At least they are easy to replace.
    The older type rubber seals blister because they are a sponge type rubber and absorb water.
    If you simply use a pin to burst all the wee blisters, the washer will seal again fully and do as a temporary fix.
     
  7. JohnD

    JohnD

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    boxed-in plumbing apparatus is a source of much unhappiness.
     
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