KILZ ORIGINAL INTERIOR/EXTERIOR Primer No. 1008 / 1009 is an oil-based primer, sealer and stain-blocker ideal for heavy stain blocking, sealing multiple interior and exterior surfaces and preparing it for painting. It is especially effective at blocking graffiti, tannin, water, smoke and other bleeding stains. KILZ ORIGINAL INTERIOR/EXTERIOR Primer has excellent adhesion and penetration to bare wood. It also dries quickly and provides a mildew resistant coating. It can be used under water-based or oil-based paint. Not recommended on flooring. No. 1009 is (350 VOC).