additives

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Does anyone know if I can use pva in a sand and cement mix alongside other additives such as waterproofer or rapid hardener?
Thanks for your time fellas
 
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Whatever your using it for, use an SBR additive if it’s waterproofing you want; conventional PVA isn’t water proof, remains water soluble & will re-emulsify if it gets damp.
 
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Well pva to add to bond strength and help adhere to background and the waterproofer or frost proofer to do there job.
 
Well pva to add to bond strength and help adhere to background and the waterproofer or frost proofer to do there job.
As I said in my previous post, conventional PVA will always remain water soluble so why risk it? Use a waterproof SBR bonding agent, there are plenty of them about; waterproof & bond in one go so you'll kill 2 birds with one stone ;)

Unibond now actually supply what they call "waterproof PVA" but I’ve yet to find out exactly what’s in it. It may be an SBR based formula but then I can’t see the point in calling it a waterproof PVA :confused:
 
For external render I ment could I use external grade pva and an other additive like rapid hardener/ frost proofer.

If I use an sbr additive instead of waterproofer can I use a frostproofer as well?
 

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