How to Prepare Drywall for Painting Hunker Run a microfiber cloth over the drywall as a final guard against dust, which will diminish the quality of your painting efforts. Additionally it is low cost and seals great. One of these is when you are painting over stained or water-damaged drywall.
Primers are the undercoat used for paints, and a drywall primer is just one thats formulated specifically for applying to sheetrock. The Best Drywall Primers For New Drywall - DIY Painting Tips What Is A Drywall Primer. Ways to Prepare Drywall for Painting The most common method of priming drywall is to apply a coat of primer-sealer designed for drywall. Different manufacturers make some prideful claims as to why their primers are the best, but essentially they are all pretty much the same. A PVA primer goes onto new porous sheetrock and seals the pores and creates a soft even coat over the top of the sheetrock.
The purpose of priming drywall is to cover the paper and mud in an even coat so that your paint, when you apply it, will not absorb differently into the various surfaces.
Drywall primer-sealers are simply inexpensive forms of wall paint with a somewhat unusual level of stickiness.