Zinsser BIN is a Shellac based primer, sealer and stain killer and sticks to all surfaces. BIN is ideal as an internal primer for new wood, drywall, plaster, masonry, metal, PVC and more. BIN blocks and seals stains from fire, water and smoke damage and also seals knots in wood and sap streaks. BINs shellac base works as an odour block for fire smoke, pets and musty damp odours. Zinsser BIN sticks to all surfaces without sanding, and dries in only 45 minutes. Approximate coverage is about 10M sq per Litre.