Pva Versus Primers | Always Use A Primer When Tiling, And Not Pva - TilersForums.com

[Qun]

What if it says on the adhesive pack to use 1:4 PVA:water solution to prime a wall before tiling?

Sorry for maybe stupid question but I am DIYer not pro.

 

[Mike]

What if it says on the adhesive pack to use 1:4 PVA:water solution to prime a wall before tiling?

Sorry for maybe stupid question but I am DIYer not pro.

the adhesive info is wrong. you should a primer suitable for the substrate but certainly not pva.

 

[Minesacarling]

I was doing a kitchen floor last week on ply. I sent the customer to tiles Uk for the adhesive and grout, and explained to buy primer and defenetly not p.v.a. When he got there they were sold out and the staff convinced him along with other tilers in the store that pva works just aswell. But what chance do customers have when the so called experts at the tile shop don't even know not to use pva

 

[RichieRich]

Thank you so much for this post. I must admit over the years I have only ever used PVA to prime the walls before tiling as that's what I was told to use. I dread to think of all the bathrooms ive tiled what now has tiles hanging on literally to a sheet of PVA glue. I've just ordered some 'proper' priming liquid now and will never ever touch that stuff again. This website has opened my eyes in alot of ways and I cant thank you guys enough.

 

[DHTiling]

Thank you so much for this post. I must admit over the years I have only ever used PVA to prime the walls before tiling as that's what I was told to use. I dread to think of all the bathrooms ive tiled what now has tiles hanging on literally to a sheet of PVA glue. I've just ordered some 'proper' priming liquid now and will never ever touch that stuff again. This website has opened my eyes in alot of ways and I cant thank you guys enough.

There is not a member on here who has not learnt something from Tilers forums.. it is the fact you have read and acted that counts..

 

[user123]

Thank you so much for this post. I must admit over the years I have only ever used PVA to prime the walls before tiling as that's what I was told to use. I dread to think of all the bathrooms ive tiled what now has tiles hanging on literally to a sheet of PVA glue. I've just ordered some 'proper' priming liquid now and will never ever touch that stuff again. This website has opened my eyes in alot of ways and I cant thank you guys enough.

Yep, same here, I know just how you feel

 

[IGTiling]

Thanks for this post.
PVA is a wood glue and belongs in a carpenters toolbox not a tilers toolbox.
I always use Mapei Primer G to prime walls and floors prior to tiling. I know that it adds to my costs but I prefer to adopt belt and braces approach, and on top of that I have never had a tiling job fail on me.

 

[user123]

An example of a PVA disaster... just now, in a mosaic artist group I belong to, this poor mosaic artist, commissioned to do a 24ft! community mosaic had this happen to her mosaics 2 days after it was installed - she used exterior ply (wrong), primed it with pva, (so so wrong) and then used a cement adhesive and grout - this is the result. Yes, I have given the lecture... have given it several times before but it's horses to water, isn't it... and it doesn't help that most mosaic books on the market still say, "prime with pva solution".. bladibla..

 

[Ian]

Brilliant post G, pictures really are better than a thousand words

 

[Eduardo]

If I are allowed,Olympic swimming pools have isolated using both variants,I think the most dependent on experience,are authorized by Mapei and Schlüter Systems.However, trying to stop water, but it is impossible in the long term.