Tiles falling off 12mm ply....

[Diamond Pool Finishers]

Well i'am with Dean on this one, just can't see the point of using any form of wood/plasterboard and there are even more specialist plasterboards out there for this if you want to go looking for them, as he says you still have to tape and tank joints for a 100% job ( i suppose its the fact that dry -gypsum's worst enemy is moister /water the makes me think like this ) but why go there when you don't have to ? sorry

 

[Aston]

people always assume that if plasterboard is tanked then the problems solved but mould can form on the back of the board due to variations in room temp, condensation from the pipes etc and that can affect its integrity..

its easy to think nah, that wont happen but it does and we are moving forwards in technology and building methods so i'd go for a suitable tile backer board ie wedi / marmox/ dukka / kerdi board in a water sensitive area.

if i was forced into using a plasterboard, then i'd use a foil backed board, mechanically fixed and then tanked using a similar system to what colour rob has mentioned..

 

[widler]

So plasterboard which has been used for decades and everybody who has used it and tiled it with no problems at all have been wrong ?
Sorry i disagree really, yes its junk if it gets wet, but why would it get wet if tiled right?
I knocked one off the other month, not a damp spot in sight!
No mould, been tiled since the 80s, is this just a fluke ?

 

[The D]

So plasterboard which has been used for decades and everybody who has used it and tiled it with no problems at all have been wrong ?
Sorry i disagree really, yes its junk if it gets wet, but why would it get wet if tiled right?
I knocked one off the other month, not a damp spot in sight!
No mould, been tiled since the 80s, is this just a fluke ?

If you think it is ok then you do it and you can give the advice you think is right and I will give the advice I think is right but pleas do not try and tell me that there have been no problems with plasterboard in wet areas we both know that is not the truth

 

[The D]

The same question to you widler so what is the benefit of using plasterboard other than the fact it is cheap

 

[SJPurdy]

tanking plasterboard is good at preventing water damage from water that finds its way through the grout but behind the plasterboard there will be pipes with joints made by plumbers and when these leak the tanking will not prevent the plasterboard being soaked from the back- the plaster board will fail and so then will the tiling and the conclusion will be it is the tilers fault. If however a water unaffected tile backer board is used and the joints sealed then the leak from the pipe will not affect the tiling and if discovered the leak will be blamed on the plumber not the tiler.
The plasterboard may be the cheapest option but add to its cost that of a tanking kit and the time to apply the tanking then it will not be that much cheaper (especialy if you get a leak behind it).

 

[The D]

No one coming in with the big benefits to using plasterboard in wet areas?? no surprise there

 

[DHTiling]

Would i use plasterboard when tanking with a tanking paste and give 100% guarantee ..NO..


Would i use PB when tanking a room with membranes.. YES..

Why .? because i can guarantee it is water proof but with a paste i cannot...

 

[The D]

I just do not see the point if you have a chance to do the job from scratch why the hell would you choose plaster board over all the other materials out there that will do the job 100 times better??????????????????????????????? will some one pleas enlighten me

 

[DHTiling]

Ahh from scratch .. that is different dean .. but if not then membranes do work just fine..

Agreed ?..

 

[Colour Republic]

No one coming in with the big benefits to using plasterboard in wet areas?? no surprise there

Hang on Deano! I haven't abandoned this thread just mearly gone out for dinner, now i'm back I might have had a few so i'll reply in the morning but safe to say i'm not disagreeing with what your preference is in the slightest, just saying what I would do in the OP's situation, to me it's all good debate not who's right or wrong

catch you tomorrow

 

[m3fitter]

Rip the ply out and use Dukka, Aquapanel... its a no brainer... Colour republic, have we met before :lol:....
can we discuss ' The Schluter Kerdi ' option lol :lol:

 

[Perry]

But if you use aquapanel you will need to tank it

 

[m3fitter]

But if you use aquapanel you will need to tank it

Tanking taped or siliconed brickbond knauf aquapanel cement board, really ? its an early debate, are we talking domestic or commercial installation..:hurray:
http://knaufmanual.mcs02.community.net.uk/knauf-systems/page_667/page_692/page_693.html

 

[werner]

One should always put picturs so that people can see / understand what's going on.

Also, if it takes 1 hour time to break down all wrong / old things and do it newly, but 2 hours to discuss in a forum what to do, it's better to do the first.