Plasterboard in bathroom

ictmad

i work in a builders merchants and we sell moisture resistant plasterboasrd a bit expensive but does the job

ictmad

Moneymaker wrote:

You mean "silicone" sealant. "Silicon" is a hard element used to make computer chips!

megagrip is the best sealant sticks anything rock hard in seconds

cargo

Plasterboard as been used for years in these areas,yes if not sealed correcty you can get problems but in general it is fine.
I have read the post about pva and tiling.
But in practice on renovation jobs I have been on in the past year all the tilers have pva'd the walls first?
I am a Plasterer and from time to time do a bit of tiling and also pva,never had a comeback yet.
This is not to say I am right just my experiance.

nelly_2

Yes you can batton the wall to bring it out to the correct depth.

Plasterboard , aqua board or plywood are all adequate surfaces as long as the tiling is done corectly.

BobProperty

cargo wrote:

Plasterboard as been used for years in these areas,yes if not sealed correcty you can get problems but in general it is fine.
I have read the post about pva and tiling.
But in practice on renovation jobs I have been on in the past year all the tilers have pva'd the walls first?
I am a Plasterer and from time to time do a bit of tiling and also pva,never had a comeback yet.
This is not to say I am right just my experiance.

You are quite likely right in that it doesn't often happen or that to some extent it is "got away with". I have been involved where a partition for a shower area was made from ply and it was PVA's then tiled. I don't know if it is still OK, I suspect it is. If you have a look at the link I posted ( previous link) you will see that it can go wrong in a big way. Now I don't want to take this chance with either my own work or anything I do for a customer. Alan M, who wrote that article, has looked into this problem over the years. It seems that using PVA has somehow got into being used for this purpose and it is difficult to re-educate some sections of the construction industry that it isn't best practice.

BobProperty

Gewens wrote:

Thanks for all the replies, yes the bathroom is bery old, and the tiles were on render. Their is a shower above the bath. A friend has surgested using plastic tung and gruve.This looks ok and would sort out my problem i think. It is fully waterproof ect. Does any body have any experiance of using this, it is available in B&Q.

Yes, I have used it once, years ago. Sealing it at the bottom edge will be the big problem, I think I just siliconed it very carefully.

pcyumjb

If you are putting any sort of boarding up in the bathroom, especially tongue and groove cladding it is a good idea to tack a vapour barrier to the wall first. This only has to be cheap polythene which can be bought from most merchants and just stapled to the timber frame.

cargo

BobProperty wrote:

I have been involved where a partition for a shower area was made from ply and it was PVA's then tiled. I don't know if it is still OK, I suspect it is.

Hi Bob
I must admit I have never used ply and pva,I may have mis read the thread starter as I thought we were taliking about fixing plasterboard and eventually tiling.
Yes I did read your link ages ago when you first posted it in another post.
Yes I also agree it is hard to re educate,when you have been doing odd tiling jobs for many years.
Also working around tilers "on & off" and every time pva is applied "Plastered walls"
You only re evaluate your working practices if you are getting problems with the work you leaving behind,so if the tiles are staying on your not going to change your ways.

This said I mean no harm by my response.
I am only talking from my experiance and as said before I can't comment on plywood.
I would take your advice on that.

Regards
cargo

BobProperty

As I said previously, Alan M has looked into this in some depth and I think he claims that putting tiles on ply is not compliant with Building Regulations as of up to 10 years ago. Something to do with the moisture and/or thermal stability of the background. Like you say, in a number of cases, probably the majority, contractors and DIYers haven't had a problem over the years and have "got away with it".

ozskin

Bob although i would have to check the specific techs I think grohe and gerberit suggest either the use of plasterboard or ply when using the wall hung frame systems. but does this then contravene building regs. I am interested to know