I am currently building a shower room with a studwork wall.
I intended facing the wall on the shower side with 12mm exterior ply
(instead of plasterboard) and then tiling with a waterproof adhesive and
grout. The bloke in Jewsons, however, suggests I use marine ply at £50 per
Is this really necessary or should I even just go with plasterboard. I
think Wickes do a waterproof version.
Anybody got any suggestions.
I did this earlier this year. I used 3/4" WBP (water & boil proof) ply,
which was around £22/sheet.
The number of times I hear "use marine ply", almost always from people
who really have no idea what marine ply is... There is no need to use
marine ply for this application. The ply shouldn't get wet in the first
place - if it does, WBP is plenty.
Don't forget to prime the ply with PVA before tiling. Use a decent
waterprrof adhesive and grout.
I agree that using normal plasterboard isn't a great idea... if it gets at
all wet it just disintegrates. Although it will be fine if you're confident
it will never ever get wet (ie you have perfectly sealed shower/tiles now
and in the future, which in turn means lots of extra supporting stud work to
ensure the plasterboard forms a completely rigid substrate for tiling on
I'm a big fan of the Wickes stuff ("Aquapanel"), and would certainly
recommend it for use in showers. Think it's about 17 quid for a sheet
900x1200 mm (the only size it comes in); you're supposed to use special
scrim tape and fixing screws with it too. A lot cheaper than exterior ply,
and only marginally more difficult to work with than plasterboard (you can
still 'score-and-snap' it).
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