Can you buy PVA sealant from any hardware stores in the Adeje area. Since moving to Tenerife and doing a bit of decorating, in the house and patio areas, I have found that either emulsion or wall plaster are on occasions tricky areas. The plaster used over here is either very porous or powdery, making emulsioning near imposible (the roller or brush being covered in old emulsion or bits of plaster). Would PVA help with the type of plaster used over here?