SBR or PVA

[Martino]

I no all tilers use SBL over PVA but can someone tell me what the biggest reason for this is?....

I have read that pva is thin and peels but isnt SBL the same?

Im thinking of using the SBL from now on but want to no why...i.e if customers ask?

 

[Gazzer]

Re: SBL or PVA

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

 

[DHTiling]

And it's SBR

 

[afright]

Re: SBL or PVA

SBR always.

 

[Ceramico tiling]

Re: SBL or PVA

Sometimes if you look at the back of a tile in a shower that has had water ingress, you will see the adhesive and then a thin loose coat of pva that has de-bonded from either the adhesive or the substrate(it can be peeled off). Water makes it soft again and it looses its bonding strength unlike other primers

 

[cam_low]

PVA sets as a skin then awakens with tile adhesive being trowelled to the wall. My favourite primer is Ardex p51.