Struggling to block stubborn stains? Zinsser Cover Stain primer is a versatile oil-based primer that delivers exceptional stain-blocking power and superior enamel undercoating performance for blemish-free topcoats. It may be used under any solvent-based or water-based topcoat, making it a highly adaptable choice for all your priming needs.

For Interior Projects: Designed to seal tough stains like nicotine and water, Zinsser Cover Stain dries quickly and provides excellent hiding power. Perfect for new wood trim, this primer lets you prime, sand, and topcoat the same day, saving you valuable time and effort.

For Exterior Projects: With a unique formula, Zinsser Stain Block primer penetrates and flexes with the surface, ensuring long-lasting protection on dimensionally unstable wood panelling and trim. It resists cracking, peeling, and blocks bleed from cedar and redwood, outperforming many oil-based primers.

Providing up to 9.8m² per litre of coverage, Zinsser Cover Stain is touch dry within 30 minutes and recoatable in 2 hours. This primer is also available to be tinted, allowing you to customize it to your preferred colour—perfect for bespoke projects. View Zinsser Cover Stain Primer - Colour Match.

Available in 500ml, 1L, 2.5L, and 5L tin sizes, you can choose the perfect amount for any job by using the dropdown menu above.

Key Product Features of Zinsser Cover Stain Primer

• Sticks to all surfaces without sanding
• Seals water, smoke and nicotine stains
• Arguably the best exterior wood sealer
• Blocks cedar and redwood bleed
• Touch dry in 35 minutes, recoatable in 2 hours
• Coverage 9.8m² per litre
• Oil based

Fully cures in 4-7 days depending on conditions

Take a look at our full range of Zinsser Paint & Primers