Zinsser Coverstain Primer 3.78 Litre White SKU: 359822 MODEL: 76801 Error. try again later You've successfully joined the club $ 59 .98 each Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants Oil based primer. Blocks stains and hides dark colours. Features and benefits Best exterior wood sealer. Blocks cedar and redwood bleed. Dries in 1 hour. Cleans up in mineral spirits (paint thinner). Seals in stains, adheres to non-porous surfaces.