Pro Block Primer Spray
For optimal performance this primer must be topcoated with a latex or alkyd oil coating on.

Pro block primer spray. Problock problock now has improved maximum stain blocking and sealing performance for resistant odors and stains such as smoke from fire damage pet odors water stains tannins wood knots and more. To avoid this prime the entire surface rather than spot priming. Now available in gray with an easier spray tip. Assures uniform appearance and adhesion of the topcoat to slick glossy surfaces.
Oil based primers are recommend when you have or need one of the following. Tip 015 017 inch application tips when spot priming on some surfaces a non uniform appearance of the final coat may result due to differences in holdout between primed and unprimed areas. Problock primer an alkyd primer by sherwin williams problock primer by sherwin williams is an alkyd primer which is basically an oil based primer.

























