sbr on top of pva

[davebates]

hi guys starting a job the weekend just spoke to the customer who informs he's already primed the walls with pva and its had 5 coats :mad2: !!!! idiot... can I go in and prime with sbr im thinking theres no way of getting it off and hoped the sbr would penertrate through the pva and seal it off, the walls are rendered concrete just wondered what you guys would do many thanks in advance !!!

 

[kilty55]

hopefully hes used neat pva and you can peel it like an orange mate

 

[davebates]

unfortunately not I think it was mixed with water ....

 

[Aston]

id give it a quick go with the sander pads and then sbr it.

 

[White Room]

I would damp with warm water and use a sharp blade to scrape off, if not give it a course sanding.

 

[DHTiling]

Wet it and see what happens first.. and not just one wetting, wet it 3 or 4 times then it should scrape away..

 

[Turkish tiler]

I found this if helps
You can remove dried polyvinyl acetate (PVAc)--a rubber-like synthetic polymer used in adhesives--from a variety of surfaces, such as plastic (wood-effect) doors, wood and laminate flooring, using white spirit, vinegar or paint thinner. The PVAc is also water-soluble, so you can remove it with several water-based products, including simple, solutions like warm, soapy water. Interestingly, PVAc is itself used as a dried PVAc glue remover when it has been solubilised and can also act to remove emulsion-based paint. According to The Furniture Industry Research Association, joints fixed with PVAc wood glue can resist 30kg forces over extended periods of time.

 

[davebates]

cheers guys don't think its going to be easily removed as its render concrete and the finish on it is quite course would tear a sponge to bits in seconds, maybe a brush would do it but the waters got to go some where and don't want it soaking into the plyfloor before the vinyl goes down. nightmare !!!! why do people mess ive told him to take the three tubs of tubbed addy back to the shop .....

 

[Perry]

what is render concrete? never heard of it but only been in the building trade 30 years