Replastering and retiling bathroom

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Hi, Our shower/bath is leaking in a very odd place. There is a leak behind the tiles from the wet plasterboard, you can hear it dripping onto the floorboards and see it too.

The tiles on the wall are natural stone and are pourous so we have got some natural stone waterproof additive and sealant and painted all the tiles and grout but unfortunately the wet is still getting through to the plasterboard behind. We have also resealed the bath with new antimold sealant.

A) Is there anything else we can try to save the walls before we detile, replace plasterboard with aqua resistant green plasterboard and retile?

B) If there are no other options, what would I be expected to pay for boards, high gloss white tiles and labour in Teesside?

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Vapin' Joe

Formerly known as Smokin Joe
I would remove the tiles to let the plasterboard dry out. I would also replace the tiles with panels, looks neater and no problem with water seeping in through failed grouting. In my experience any type of sealing is only ever a temporary measure, sooner or later it will let water through again.

Not too difficult a DiY job, but I would do it sooner rather than later to avoid expensive damage.
 

screenman

Squire
We ripped our tiles out within 3 months of fitting and replaced with panels. Wickes grout it seems was not water proof, not my choice but that of a useless timer.
 

Mugshot

Cracking a solo.
Nope, once it's leaking you're basically done, the chances of finding the hole/holes is slim to none. Rip it out and start again. While you're at it ditch the natural stone, looks great but far too much maintenance, it looks like travertine which will suck up more water than a sponge.
 
Last edited:
Location
Cheshire
Hi, Our shower/bath is leaking in a very odd place. There is a leak behind the tiles from the wet plasterboard, you can hear it dripping onto the floorboards and see it too.

The tiles on the wall are natural stone and are pourous so we have got some natural stone waterproof additive and sealant and painted all the tiles and grout but unfortunately the wet is still getting through to the plasterboard behind. We have also resealed the bath with new antimold sealant.

A) Is there anything else we can try to save the walls before we detile, replace plasterboard with aqua resistant green plasterboard and retile?

B) If there are no other options, what would I be expected to pay for boards, high gloss white tiles and labour in Teesside?

View attachment 152733 View attachment 152734
About £8.50 in Teeside...£400 everywhere else, no but seriously tiles look like travertine and you can seal easily gi to proper tiling shop for it. Make sure all edges are well masticed then no way water can get through. Good luck.
 

Levo-Lon

Guru
If its got wet behind the tiles......its not likely to dry..
you could try above...but its a job for the future im affraid..
You get what you pay for, sadly you have bought expensive tiles and they were fitted cheaply.

learn from this and do your home work next time..
 
If it's wet the plasterboard behind you are probably buggered. Until it dries out the tiles wont stick to the adhesive, and that's if it's not to far gone.
 
OP
OP
bikingdad90
It was like that when we moved in. The bathroom was done by rubbish tradesmen.
 

PeteXXX

Cake or ice cream? The choice is endless ...
Location
Hamtun
If you remove the tiles, the wet plasterboard is likely to come off in chunks with them.
Are you sure the water ingress is through the tiles in the shower or is it possibly a leak from behind?
How long after using the shower can you hear the dripping?
 
OP
OP
bikingdad90
If you remove the tiles, the wet plasterboard is likely to come off in chunks with them.
Are you sure the water ingress is through the tiles in the shower or is it possibly a leak from behind?
How long after using the shower can you hear the dripping?

It is definitely not a leak from behind the shower as pipework runs along the bath and then down to the boiler below. The only pipework going up is from the tap to the showerhead but it is not plumbed in at the wall, just a metal hosepipe thingy. The dripping starts after the shower has been on for about 5 mins but only does it when the tiles are splashed with water. Bath times are 100% leak free.
 
I used multiboard in mybathroom, foam sandwitched between fibreglass reinforced cement. Waterproof, insulatig and can be cut and shaped by hand. It is dimpled for attatching tiles or plaster skim.
 

Globalti

Legendary Member
If there's enough leakage that you can hear drips, be prepared for a stinking gopping mess when you open it all up. I'm afraid that you'll find the water damage is far worse than just some damp board... guess how I know this?

Get it all rebuilt then fit shower board by Mermaid or similar. It doesn't leak.
 
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