plasterboarding shower cubicle


Postby scottz » Tue Apr 01, 2008 6:09 pm

can i use standard plasterboard in the shower cubicle area or do i need to use the aqua board. Would pva'ing normal plaster board be ok? The wall will be tilled after.
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Postby DUDE DIY » Wed Apr 02, 2008 8:29 am

Really need to use aqua board mate. Cheers
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Postby chris_on_tour2002 » Thu Apr 03, 2008 3:22 pm

you can use normal plasterboard, yes pva or even better latex first. better still tank it! provided that the tiles and grout are sound (use a GOOD QUALITY tile adhesive and a separate grout such as balgrip, specially designed for showers) and silicone seal including up the join where the walls meet and you should be ok.
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Postby scottz » Fri Apr 04, 2008 6:03 pm

thx guys but some plasterer suggested using half inch plywood! wot do think??
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Postby chris_on_tour2002 » Sun Apr 06, 2008 8:42 am

make sure its marine ply or at the very least wbp. give a few good coats with pva before tiling.

whichever option you go with, provided you use a decent waterproof tile adhesive, decent grout and silicone where its needed you should have no problem. if its watertight it shouldnt matter.
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Postby macten » Sat Apr 26, 2008 9:43 pm

Hi, I'm a tiler by trade. Please don't use PVA on substrates that are to be tiled. If priming is required use a suitable acylic based primer.
PVA becomes 'live' with water contact and can eventually lead to tile failure.

As has been said before - tank the plasterboard prior to tiling. No adhesive or grout is waterproof (some can be water resistant but that just means it doesn't breakdown in the wet) and tanking is the only way to protect water sensitive substrates like plasterboard.

One last time plasterers - Do NOT use PVA for tiling!!
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Postby macten » Sat Apr 26, 2008 9:44 pm

Hi, I'm a tiler by trade. Please don't use PVA on substrates that are to be tiled. If priming is required use a suitable acylic based primer.
PVA becomes 'live' with water contact and can eventually lead to tile failure.

As has been said before - tank the plasterboard prior to tiling. No adhesive or grout is waterproof (some can be water resistant but that just means it doesn't breakdown in the wet) and tanking is the only way to protect water sensitive substrates like plasterboard.

One last time plasterers - Do NOT use PVA for tiling!!
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Postby smashngrab » Sun Apr 27, 2008 4:42 pm

OK Macten we get the message :D
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Postby stevenc1603 » Mon Apr 28, 2008 2:28 pm

I've just had a shower room done. The joiner used greenboard plasterboard to make up the 2 new walls, however the other 2 were left as they were.

Once the wall was up I used a Dunlop tanking kit that you can get from Screwfix and is very easy to use. This creates a waterproof barrier between the plasterboard and the tiling.

If you are using a shower tray make sure you fill the gap between the walls and the tray with silicon before you tile. Once you have tiled again silicon seal the joint between the shower tray and the bottom of the tiles. Also as mentioned further up, silicon the vertical wall joints.
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Postby rosebery » Tue Apr 29, 2008 5:21 pm

[quote="macten"]Hi, I'm a tiler by trade. Please don't use PVA on substrates that are to be tiled. If priming is required use a suitable acylic based primer.
PVA becomes 'live' with water contact and can eventually lead to tile failure.

As has been said before - tank the plasterboard prior to tiling. No adhesive or grout is waterproof (some can be water resistant but that just means it doesn't breakdown in the wet) and tanking is the only way to protect water sensitive substrates like plasterboard.

One last time plasterers - Do NOT use PVA for tiling!![/quote]

Thanks macten. I was starting to think I was a lone voice in the wilderness on this subject here.

Cheers
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