About Zinsser® B-I-N® Shellac-Base Sealer Primer Looking for a “silver bullet” primer that covers everything unwanted? Use the one contractors keep in their vans: Zinsser® B-I-N® Primer. As the original pigmented, shellac-based, stain-killing primer-sealer, nothing is better at permanently blocking stains, odours and wood knots. Great under all top coats.
Shellac-base primer-sealer For interior and spot exterior use Greatest stain sealer Seals knots and sap streaks Seals pet, smoke and musty odours Sticks to all surfaces without sanding Lightning fast dry - recoat in 45 minutes For Best Results Use indoors or for spot exterior use. Works with any top coat. For spray paint “Apply Outdoors”.