Priming walls and exterior surfaces seals the area and prolongs the wet edge of finished coats, reducing lap marks and ensuring a uniform color and luster.
There is a common myth that priming walls – especially those that have been painted before – isn't necessary. But many layers of latex paint can actually result in a surface that is very absorbent and requires priming.
It is usually not necessary to apply primer to sashes, trim and doors that already have an enamel finish. If extensive repair work has been done, however, you should apply a primer to these areas.
Interior & Exterior Paint Primers
For patched wall surfaces, spot prime with Regal First Coat® or Fresh Start® (023) interior paint primers. For new drywall, we recommend using a latex primer.
When applying primer to previously painted drywall, use Moore's® Alkyd Enamel Underbody, Moore's Alkyd Primer Sealer, Regal First Coat, or Fresh Start.
For walls and ceilings with a porous, flat finish, use Regal First Coat or Fresh Start.
For interior or exterior wood surfaces that are unpainted or that have been previously painted and sanded, use Moore's Alkyd Enamel Underbody or Fresh Start.