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  • Anyone know anything about concealed cistern units?

    I'm planning on completely redoing my ensuite bathroom after discovering the bouncy shower pan was not a fun design feature but was caused by the chipboard support for the shower pan having been dissolved by a leak. Project creep means that fixing the shower has turned into a total refit.

    I'm hoping to use a concealed cistern behind boxing and a floor mounted back-to-wall pan. However, the house is wood-framed, so the wall behind the cistern is effectively a stud wall. I can't use one of the metal stands as the soil pipe runs horizontally behind the pan, where the feet of the stand would go.

    So my plan is to attach a sheet of, say, 19mm/3/4" ply to the wall behind the bonzo, screwed firmly into the timbers in the wall, and then bolt a wall-mounted cistern onto that. Genius plan, or stupid idea doomed to a splishy splashy leaky conclusion?

  • I wall mounted a concealed cistern, boxed it in and connected it to a floor mounted pan and it hasn't exploded into a shitty fountain yet. Vertical soil pipe in this case which was a mega pain in terms of positioning but eventually just about found a combo that worked.
    The cisterns have a spec explaining how much drop there needs to be to the pan etc. Double check all your measurements. I fucked up a bit but managed to get away with it so far. I have photos I can dig out if you like.

    I am not a plumber.

  • I wall mounted a concealed cistern, boxed it in and connected it to a floor mounted pan and it hasn't exploded into a shitty fountain yet. Vertical soil pipe in this case which was a mega pain in terms of positioning but eventually just about found a combo that worked.
    The cisterns have a spec explaining how much drop there needs to be to the pan etc. Double check all your measurements. I fucked up a bit but managed to get away with it so far. I have photos I can dig out if you like.

    Good to know. I'm really after reassurance that a 19mm sheet of ply is enough to hold a cistern with 6 litres of water in it in place. I should probably ask my father, given that he's an architect so should probably know about these things. He does however tend to have an alarmingly laid-back 'it'll be fine' attitude to most structural things. Benefits of being retired, I suppose.

    I am not a plumber.

    You and me both. But hey, how hard can it be?

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