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

[enduro]

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

Very good dh, hopefully people will read and learn, and not read and weep when they have used pva and all the tiles fall off.

 

[devonmark]

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

regarding pva on fresh plaster, many decorators coat new plaster in the stuff to seal, all they are doin in effect is sealing in moisture as it takes a good 4wks for the plaster to dry thoroughly. Fresh plaster should be primed/sealed with contractors emulsion 50/50 with water when decorating.

just a bit of useless information that may come in handy.

 

[DHTiling]

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

Cheers lads ...just thought this article was ideal for the pva versus primer argument that keeps cropping up....

 

[brian c]

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

top man Dave

 

[Varley]

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

Good thread Dave

 

[Jeffrey4670]

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

Hi, This is very interesting! In the past I have used PVA, but not any more. Over the past few jobs I have used BAL Bond and with a bit of luck the floor tiles will stay down!!! Jeff
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Hi, Please could I ask you this question! I have read that you must seal the underside/joints of ply overlay. Why is is this so? for dampness? Is it ok to use PVA? Jeff

 

[DHTiling]

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

You prime to minimise moisture absorption.. so pva wont suffice as primer.......

 

[anne0411]

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

Great thread thanks!

 

[barriesheene]

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

Have to be honest that this came as a surprise to me on the BAL course I sat. I had been told so many times over the years as a tile salesman by RESPECTED tiler's that there was no need to, and i quote " use that overpriced " when pva will do !! :happy:

 

[DHTiling]

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

it is pricey stuff barrie mate.. but cheaper than a re-tile if they fall off...lol lol...

 

[Matty A]

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

I was looking in tile suppliers near where i live and asked only this morning how much a bottle of primer was now of course they had the dreaded pva but also sold everbuild SBR and i was wondering if the sbr is ok as a primer as it is only £11 + vat for 5ltr bottle cos i have a large job next week that all needs priming.

Cheers
Mat

 

[DHTiling]

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

some sbr's are just bonding agents for plaster and cement screeds etc and not primers as well.. read the bottle and see what it say's...........dave..

 

[Matty A]

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

That'll dink dank do for me

cheers
mat

 

[leblanc]

I have just read this after coating horizontal wood framing around a bath with Evostick waterproof PVA. I also went part way up the wall to cover a repaired area of lath and plaster. Should I remove it, and how?

 

[reaper72]

Always said pva should be outlawed as a primer.........