The final step of any painting prep should be priming the surface before you paint. Some surfaces are slick and pose adhesion problems for paint; others, like new drywall, have varying porosities. To seal the porosity of drywall and provide a uniform surface for paint, use PVA primer. PVA stands for polyvinyl acetate, the resin system used in the primer. PVA drywall primer was designed for new drywall. This type of primer wets the surface of the wall very well and seals the surface too. It wets the surface of the wall better and is easier to re-coat. PVA primer will not act as a stain blocking primer.
Up to 300 sq. ft. per gallon on non-porous surfaces. Coverage figures do not include spray loss, loss due to surface irregularities and porosity, nor material loss when mixing.