Cover Stain, Gallon, 100 VOC, Classic Oil Based Specialty Primer, Combines Excellent Adhesion With Flexibility & Stain Blocking Power For Interior & Exterior Surfaces Damaged By Fire, Water & Smoke, Cover Stain Classic Oil 100 Has Excellent Enamel Holdout Which Makes It Ideal For Bare Wood, Sticks To All Surfaces With Sanding, Hides Dark Colors, Penetrates & Seals, Use With Any Top Coat.