Dave

Nick....can you tell us if PVA stops the formation of Ettringite between cement and gypsum...we know Acrylic primers do but can you show us some literature that shows PVA does as well....?

Also can you show us some literature that states that PVA impregnates a substrate and not just sit on the face of it...?

I and quite a few members would like to see this.....in writing...