to prime or not to prime!!!

[smokey1234x]

pva is and has been used for years in plastering and tiling,dont use it much myself,but i know of older tilers than myself who hav been tiling for 30-35 years who only hav ever used pva with no probs

 

[bigandy]

i got to admit i have always used pva (old school i suppose) and never had any come backs but i read on another thread that if not used correct primer then it can invalidate my insurance so pva no more!!!!!!

 

[smokey1234x]

i got to admit i have always used pva (old school i suppose) and never had any come backs but i read on another thread that if not used correct primer then it can invalidate my insurance so pva no more!!!!!!

is it possible to tell if pva or the proper primer is used?

if tiles started fallen out that is

 

[Andy S tile]

Bit of a thread hyjack this, but its not worth starting a new one for, i,ve a kitchen floor to do tomorrow 9 sqm, ceramic on concrete, i have various makes of adhesive left over from other jobs, can i prime the whole floor in one make of primer or would it be better to maybe just brush and damp the floor with water, and this is gonna be a hassle but should the different adhesives not come into contact with each other to avoid any adverse chemical reactions?
Thanks Andy

 

[White Room]

I've used different addy never had problem but I don't make a habit out of it, Try to stick to one brand.

 

[grumpygrouter]

Bit of a thread hyjack this, but its not worth starting a new one for, i,ve a kitchen floor to do tomorrow 9 sqm, ceramic on concrete, i have various makes of adhesive left over from other jobs, can i prime the whole floor in one make of primer or would it be better to maybe just brush and damp the floor with water, and this is gonna be a hassle but should the different adhesives not come into contact with each other to avoid any adverse chemical reactions?
Thanks Andy

Any specific reason why you want to prime concrete?

 

[Andy S tile]

When i went to see the job it looked a bit shiny i think there had been some lino down, just making sure it was ok, but i won,t bother primeing it or any concrete job ever again!! Less work is good for me Grumps!!

 

[grumpygrouter]

When i went to see the job it looked a bit shiny i think there had been some lino down, just making sure it was ok, but i won,t bother primeing it or any concrete job ever again!! Less work is good for me Grumps!!

One function that priming would help on concrete is to lock in any residual dust.

 

[sWe]

One function that priming would help on concrete is to lock in any residual dust.

And/or to prolong the open time and curing time of the adhesive.

 

[Rab78]

plaster board and ceramic and ceramic adhesive is okay not to prime.
plaster board and porcelain/marble etc, you use cement based adhesive (has to be mixed) the yes bond neat with pva, or at least 1:2parts water.