This fast drying, virtually odorless, Zero V.O.C. primer/sealer is highly recommended for use on all new or old interior surfaces and previously painted exterior surfaces in sound condition. Its super adhesion plus its uniform holdout & easy application make it superior to most interior latex primers. It’s especially effective on porous and uneven substrates such as drywall, tape joints, plaster and plastered spots. This primer is suitable for use under oil, alkyd or latex topcoats.