Painted Surfaces

Previously painted surfaces should be thoroughly abraded to improve adhesion and to remove any weak or loose material.


Plaster, render, brick and concrete surfaces

New plaster, render and concrete should be allowed to dry out and then brushed thoroughly to remove any loose material. We recommend priming bare, porous surfaces with one coat of Watco Universal Sealer. This will reduce porosity and therefore improve the coverage and appearance of the Watco Wallguard. As an alternative to Watco Universal Sealer, dilute the first coat of Watco Wallguard with 20% water and subsequently apply two full coats.

Metals

Watco Wallguard should not be used on bare metals. Remove loose rust from iron and steel and coat it with Watco Primebase, a solvent free metal primer.