Zinsser B-I-N Shellac-Base Primer is a primer-sealer and stain blocker designed for interior ceilings, walls, woodwork, cabinetry, and other paintable surfaces. Exterior use is limited to spot priming of knots and sap streaks. The formula blocks stains from water, smoke, grease, markers, tannin, rust, asphalt, and many other contaminants while providing a strong bond coat on difficult substrates. Key Features Stain and Odor Blocking: Seals water, fire, smoke, nicotine, ink, marker, and pet odors. Adhesion to Difficult Surfaces: Bonds without scuff sanding on glossy or hard-to-coat substrates. Interior & Spot Exterior Use: Suitable for interior surfaces and exterior spot priming of knots. Seals Porous Surfaces: Fills and binds wood fibers for uniform topcoat coverage. Fast Dry Time: Dries in 20 minutes and can be recoated in 45 minutes. Wide Surface Compatibility: Works on drywall, plaster, wood, metal, vinyl, PVC, fiberglass, and masonry. High-Hiding Formula: Provides excellent enamel holdout for fewer topcoat layers. Cold Application: Can be applied in freezing temperatures. Specifications Specification Details Product Type Shellac-based primer-sealer Recommended Use Interior surfaces; exterior spot priming Surface Compatibility Drywall, plaster, wood, metal, vinyl, PVC, fiberglass, masonry Dry Time 20 minutes to touch; 45 minutes to recoat Stain Blocking Blocks water, smoke, ink, marker, nicotine, rust, odors Tinting Up to 2 oz universal colorant per gallon Zinsser B-I-N Shellac-Base Primer offers strong adhesion, high-hide stain blocking, and fast dry performance for interior surfaces with the option for exterior spot priming.
