Zinsser CoverStain Primer Sealer 10 Litre Bucket combines universal application, fast-drying, and convenient paint thinner clean up. It is a high performance all surface oil based primer sealer that offers outstanding adhesion and stain killing power. CoverStain Primer Sealer can be used with any top coat and is ready to recoat in 1 hour. Seals water, smoke and nicotine stains Sticks to surfaces without sanding Blocks cedar and redwood bleed Ready to recoat in 1 hour On interior surfaces, Cover-Stain dries quickly and has great hiding power providing outstanding stain killing and enamel undercoating performance. Stains of all kinds are permanently sealed so topcoats are blemish free.Cover-Stain is especially effective on nicotine and water stains. New wood trim can be primed, sanded and top coated the same day, saving the professional time and money. On exterior surfaces, Cover-Stain has an unique whole house formulation that delivers full penetration and flexibility on all surfaces, especially dimensionally unstable wood siding and trim, where few oil-based primers can succeed. Cover-Stain seals redwood and cedar bleed, resists cracking, checking and peeling and is compatible with all finish paints. No other oil based primer can do what Professional Duty Cover-Stain can.