Pva Versus Primers | Always Use A Primer When Tiling, And Not Pva

[nealgrove]

Re: P.v.a. Versus Primers......

I am tileing over old ceramic tiles,was told to unibond pva over old ones first,Wrong??????

 

[Gazzer]

Re: P.v.a. Versus Primers......

I am tileing over old ceramic tiles,was told to unibond pva over old ones first,Wrong??????

How did you apply the unibond ?

 

[Rainbow]

Re: P.v.a. Versus Primers......

Hi
I have a recently plastered en-suite which has a 50/50 emulsion primer on it.
I want to tile the whole room and am going to use BAL Rapidset adhesive - do I still need to use a primer such as BAL primer??
Any help would be gratefully received.
Thanks

 

[nudge]

Re: P.v.a. Versus Primers......

I am tileing over old ceramic tiles,was told to unibond pva over old ones first,Wrong??????

yep! - just wash the old tiles down propery & use something that will bond direct to the. i like Mapei Kerabond plus/isolastic50 - been using & recomending it now for 15 years without 1 single problem - easy!

 

[doug boardley]

Re: P.v.a. Versus Primers......

Hi
I have a recently plastered en-suite which has a 50/50 emulsion primer on it.
I want to tile the whole room and am going to use BAL Rapidset adhesive - do I still need to use a primer such as BAL primer??
Any help would be gratefully received.
Thanks

yes Rainbow, especially if it's a gypsum type plaster

 

[Rainbow]

Re: P.v.a. Versus Primers......

yes Rainbow, especially if it's a gypsum type plaster

Hi Doug
No idea if it's Gypsum based but will Prime it with BAL anyway...
Thanks for the advice.
:8:

 

[coxy]

Re: P.v.a. Versus Primers......

just new to this was gonna use pva thanks for the advice:8:

 

[Stephen@Weber]

Re: P.v.a. Versus Primers......

I think it depends entirely on the surface you're sticking to and what you're sticking to it. There must be a reason that every single manufacturer says that PVA isn't suitable, I mean I'm sure they're not sitting round a table (In an evil lab) saying lets lie to all the tilers out there. They all say the same reasons as well, reactivates with water, sits on the surface, not strong enough.

I mean epoxy primer seems to sit on the surface but defo gives a strong enough bond, perhaps we should just believe all the people in the industry, tile manufacturers, adhesive manufacturers, tilers, chemists and except that tiling needs some specialist products.

You never know these chemists could devise products that allow tiling in every room of the house rather than just solid floors and walls.

 

[mikethetile]

Re: P.v.a. Versus Primers......

your right in what you say penkhull

the problem is misinformation

i havent been into a diy shed to read the tubs of addy for a while so they may have changed it

but the instructions for unibond addy tell you to prime plaster with their pva product:yikes:

tiling is traditionaly part of the plastering trade and city and guilds plasterers learnt tiling

and a lot of plasterers use pva as some kind of cure all magic potion

even advising their customers to seal the new plaster before painting ,which is correct

but when the customers asks what to use they say dilute some pva it will stick the paint to the wall:yikes:

one job i looked at recently everything got confused and she mixed the pva through the paint:yikes::yikes:

 

[guil.rocha]

Re: P.v.a. Versus Primers......

thats good advice, i just bought some pva for a job on monday where i ply the floor. I guess i need to get some primer instead. Whats the best priced primer out there? I'm new to the trade and so far only used Nicobond for everything.

 

[DHTiling]

Re: P.v.a. Versus Primers......

For ply you want SBR..

 

[guil.rocha]

Re: P.v.a. Versus Primers......

thanks again Dave!

 

[Gazzer]

Re: P.v.a. Versus Primers......

Good SBR [DLMURL="http://www.tradetiler.com/acatalog/siliconing_tiles.html"]Here[/DLMURL]

 

[doug boardley]

Re: P.v.a. Versus Primers......

http://www.tilersforums.com/tile-adhesive-grout-substrate-preperation/2511-p-v-versus-primers.html

 

[doug boardley]

Re: P.v.a. Versus Primers......

feel free to get your boss to log on and show him this, it's all there, then watch him rub his chin and go oooh and aaah
http://www.tilersforums.com/tile-adhesive-grout-substrate-preperation/2511-p-v-versus-primers.html