quote:

Originally posted by ubelongoutside:
A painter friend once told me to definitely "prime" but you don't need actual primer on new drywall. He used flat white ceiling paint and said it gave him the best results and was cheaper than the primer. He said he only used true primer when doing a drastic color change or covering water, smoke, or other discoloration.

quote:

Originally posted by sigcrazy7:
Yes, you absolutely need primer on raw drywall. Use a polyvinyl acetate primer. The stuff is cheap, like $8 a gallon, and forms the bonding layer as well as sealing the board. Without the primer, the taped seams will show through more readily. Some people think they’re getting by with using multiple coats of topcoat, since PVA is a base ingredient in all latex paints, but that is simply wasting money. There are ¡¡NO!! professional painters that would apply topcoat to raw wallboard.

BTW, 2 in 1 paints are crap. They increase the PVA content while reducing the solids. They are neither a good primer nor a good topcoat.