- Blocks stain from water, smoke and fire damage
- Seals knots and sap streaks
- Blocks odours permanently and completely
- Works over or under any topcoat
- Interior use (and exterior spot use only)
Rust-Oleum B-I-N® is the original shellac-based primer-sealer stain-blocker. It is formulated to seal, prime and block out tough stains on previously painted or new work. Any oil or latex paint can be applied over it.