A primer or undercoat is a preparatory coating put on materials before painting. Priming ensures better adhesion of paint to the surface, increases paint durability and provides additional protection for the material being painted.
Screen Goo Premier Primer is a non-toxic, 100% acrylic, water-based coating. It is suited for priming all porous surfaces such as drywall, plywood, plaster and masonry. Its principal advantage over conventional primers is its 100% acrylic base. The vast majority of water-based primers include a class of budget medium/extender called PVA which is substituted for a pure acrylic base for cost reasons. PVAs, however, are very susceptible to yellowing when exposed to UV light and will eventually discolour and compromise the performance of Screen Goo.
Please note that Screen Goo Premier Primer is NOT a replacement for Urethane Modified Acrylics (UMA) for non-traditional and solvent-based surfaces. It is NOT to be used on metal, fiberglass etc. For that we suggest UMA by XIM.