Description
Zinsser Cover Stain is a professional-grade, oil-based primer, sealer and stain blocker engineered for demanding interior and exterior projects. Renowned for its exceptional hiding power and adhesion, it provides a reliable foundation for long-lasting decorative finishes on a wide variety of surfaces.
Product Description
Zinsser Cover Stain is a high-performance, fast-drying primer designed to seal porous surfaces, block persistent stains and ensure excellent adhesion of subsequent paint coats. Its advanced oil-based formulation permanently locks in stains while creating a tough, uniform base suitable for virtually all decorative topcoats, including water-based and solvent-based paints.
This versatile primer is ideal for both new construction and renovation work, delivering consistent, professional results even on difficult or problem substrates.
Key Features & Benefits
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Outstanding stain blocking – Permanently seals water stains, smoke damage, nicotine, grease, ink and tannin bleed from woods such as cedar and redwood.
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Exceptional adhesion – Bonds firmly to a wide range of surfaces, including glossy finishes and dense substrates, often without the need for extensive sanding.
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Fast drying – Touch dry in approximately 30 minutes and recoatable in as little as 1–2 hours, reducing downtime on projects.
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Multi-surface compatibility – Suitable for wood, MDF, plaster, drywall, masonry, metal, concrete and previously painted surfaces.
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Interior and exterior use – Provides durable performance in both indoor and outdoor environments.
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Universal topcoat compatibility – Can be overcoated with any decorative paint system.
Typical Applications
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Sealing stained or damaged walls and ceilings
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Priming bare or previously painted timber, trim and joinery
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Blocking knots and resin bleed in wood
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Preparing masonry, plaster and drywall for finishing
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Renovation of smoke- or water-damaged surfaces
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Exterior woodwork such as doors, fascia, soffits and railings
Coverage & Application
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Coverage: Approximately 9–10 m² per litre, depending on surface porosity and application method
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Application methods: Brush, roller or spray
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Clean-up: Mineral spirits or paint thinner
Why Choose Zinsser Cover Stain
Zinsser Cover Stain is trusted by professional decorators and serious DIY users for situations where standard primers fail. Its ability to combine priming, sealing and stain blocking in one product saves time, reduces material usage and ensures a high-quality, durable finish on even the most challenging surfaces.
