preping new ply walls for tiling

[Rich]

Plasterboard will hold a greater weight and if you read through the link I put up in my last post you will see that ply is very problematic. I am trying to answer all of your questions, if I was looking to make something out of wood I would take your advice, take ours on this. Now that the ply is in place and it is not in a shower area I would recommend buying yourself some keraquick with latex plus, should be fine

 

[widler]

just a quickie mate,i tiled 3 bathrooms in the same house not so long ago,in quite expensive tiles. the joiner boarded the bathrooms out in ply,saying about the strenth factor ect how he has seen this done sooooooo many times ect (ive only been in the trade 26years,so obviously,i know nowt).
long story short,i reboarded 2 in plasterboard,dident do the last one,the owner wouldent let me,so i tiled them all(in flexi adhisive),the wood one dident take but the plasterboard walls are and always will be fine,as solid as my head. ply is not good to tile on,maybe im just unlucky though

 

[doug boardley]

No it's fine and a good help, but try to explain to any woodworker why you should use plasterboard in favour of ply, (ie, plasterboard adds nothing to the structure but ply does), and you may understand my indesision? and what can be done to rescue the situation, yeah.

You guys give dam good advise, but sometimes it needs to be tempered with a little of bit of DIY leeway, if that makes sense, yes you guys are looking at potential liability, (understandable), me? just a good, safe not litigation proof adequate job

..but we have to get it right everytime .....reputations and all that.

 

[cyclonebri1]

Hi, I have to agree with the gents above to be honest and I cant understand why you would ever "have" to use ply, a cement backer board would have been a far better choice from scratch and I would strongly recommend using a similar board. As said above, ply is really not a very good substrate to tile onto for many reasons. Have a read through the link below, the post is regarding plywood on floors but is the same for walls


Plywood floors...



As with regards to the PVA as a primer, have a look through this link


read: P.V.A. Versus Primers


If you still decide to tile straight onto the ply, then I would use a 2-part adhesive like Mapei keraquick with latex plus, this is available from tile giant but would still be happier over boarding. Hope this is some help.

Thanks chap, and to everyone else. The advice has been great, the walls have stripped and patched, (plaster on block from new), the floor which is 1/2 floorboarded/1/2concrete has been over boarded in no more ply fixed per recomendations and tiled. You lot sold me on that stuff some time back and yes it is solid.

The rest of the job being low level and most tiles effectively will have fixing bolts through for sanitary ware and accessories so will have to stick with the ply this time, 2 part flex to be used.

Hadn't heard about the PVA thing, the advice seems critical, but, although I'm not a proffesional plasterer I can plaster to a very acceptable standard, learnt simply by watching pro's. But what I can say that even recently all 3 or 4 have used PVA on plasterd or painted walls prior to reskimming, even knowing walls are to be tiled????. Maybe some thing to bear in mind for you guys?

 

[kilty55]

cyclone bri,pva is fine for plastering in fact its needed yes

it is not for tiling

pva is needed for plastering,plaster skim can hold tiled weights up to 20 k a sq metre so really only good for ceramics so thats fine

its just not fine to then re apply pva on top of the skim coat before tiling

 

[Rich]

As above.

PVA is fine for plasterers, a HUGE no no in the tiling game.

 

[Mike]

As above.
PVA is fine for plasterers, a HUGE no no in the tiling game.

game :yikes::yikes::yikes:

 

[widler]

cyclone bri,pva is fine for plastering in fact its needed yes

it is not for tiling

pva is needed for plastering,plaster skim can hold tiled weights up to 20 k a sq metre so really only good for ceramics so thats fine

its just not fine to then re apply pva on top of the skim coat before tiling

i think on over skimmed walls the weight is reduced a lot,no where near as strong as new plaster or plasterboard skimmed

 

[widler]

game :yikes::yikes::yikes:

if we don't treat it as a game,we don't have fun mike:lol:

today im playing 'which of my 2 lads can grout with black groutthe best:smilewinkgrin:'

 

[Mike]

if we don't treat it as a game,we don't have fun mike:lol:

today im playing 'which of my 2 lads can grout with black groutthe best:smilewinkgrin:'

hope you're supplying gloves for them! i hate black, takes so long to clean, even with the washboy

 

[cyclonebri1]

Ah becoming clearer all the time.
Without wanting to prolong this thread forever, what about tiling on previously emulsioned walls, ie plaster and skim on block walls that have been painted with emulsion?

Actually I wont wait for the reply, it's obvious with a little thought:iamwithstupid: and I've just realised how easy and dust free it is to remove with a wall paper steamer.

 

[Dan]

Just bumping some of the older popular (sometimes not so popular) threads. Probably wont be current discussion these days but I just need to do it. So just ignore the thread if it's not current for you.