Tanking systems for showeroom/wetroom - necessary?

Jun 11, 2017 15 Replies

I was wondering if there was any point in these?



The scenario is a wetroom on solid screeded floor (on celotex then concrete then DPM).



All walls are brick and there's a floor drain.



I'd rather not have to deal with another "device" in there if at all possible.



Assume all tiling will be done with water proof adhesive and grout and the wall/floor joint will be sealed with something flexible.


Wet rooms? No. Awful things. Put in a large walk-in shower.

That's not up for debate - the design is committed.

Anyway, this won't be awful - UFH and generous floor slopes will keep it dry and the shower is at the far end, bog and basin near door.

Trust me, this *will* work :)

The UFH + wetroom is based on my observation of the Forest of Dean cabins - warm floor dries very fast.

Move house. Or get a different wife.

Surely a large enough walk-in shower *is* a wet room?

No and it's my idea.

Now can we get back to the question as asked :)

Depends if there's anything in it other than a shower and ancillaries.

You are correct and he is talking usual crap.

IF your tiling is sound and you put plasticiser in the grout there is no reason not to have ordinary plasterboard walls.

These are masonry walls.

The question is - Do I need a tanking membrane?

I'm kinda veering to the "probably not" as there's nothing to go wrong if a little bit of water bleeds through - walls will dry from the other side and the screed might get damp but there's nothing in it that can rot - except maybe the ali foil coating on the celotex - not sure about that. That could corrode away in the presence of damp alkaline cement.

No tiling remains uncracked forever. Without a membrane it will leak in time.

Hopefully you have a dehumidifier ready too.

NT

I bet that would love regular condensation.

NT

If you have UFH and decent insulation there will be no regular condensation

Bring back Swap Shop and update it a bit:-)

I have a similar issue in attempting to future proof the new residence. My idea is to arrange space for a wheelchair in a room too small for an

800x1200 shower enclosure plus toilet and washbasin. I intend to use shower board, underfloor heating and lots of extract. The only plasterboard is the ceiling. >

The US normally uses membranes.

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