ZINSSER® Mould Stop Primer

Product Details

Zinsser Mould Stop Primer is a water-based coating that can be used to paint over existing stains left by mould, mildew, moss, fungi and any other fungal organisms. The Mould Stop Primer contains an mildewcide to prevent the growth of mould, mildew and other fungal organisms on the paint film. The Mould Stop Primer also aides in covering residual microbiological and fungal stains.

• Prevents odour causing bacteria on paint film*
• Prime over existing mould and mildew stains
• Great for use under wallcoverings
• Interior/Exterior; water-based/ tintable

*Formulated to resist mildew growth on the paint film

Specifications

Regular (Water-Based) Aerosol Spray (Solvent-Based) Recommended For Use On Interior & exterior non-porous surfaces: drywall, plaster, wood, masonry, attics, basements, bathrooms, subfloors, trim, wall cavities, and commercial facilities (schools, hospitals, warehouses). Same surfaces, but ideal for spot-treatment, hard-to-reach areas, and rapid application on trim, corners, studs, and small patches. Key Feature(s) Water-based primer that blocks and covers stains from mold, mildew, moss, fungi, and resists mold/mildew growth on the paint film. Binds to chalky surfaces & masonry. Solvent-based aerosol designed for quick spot priming. Fast-drying, excellent coverage, and prevents mildew/mold on the paint film. Perfect for detail areas & tight spaces. Interior/Exterior Interior / Exterior Interior / Exterior (spot-priming) Resin Type Styrene Acrylic Solvent-Based Acrylic (aerosol resin blend) Pigment Type Calcium Carbonate Titanium Dioxide / Inorganic pigments Solvents Water, Ethylene Glycol Acetone, Naphtha, Hydrocarbons (typical aerosol blend) VOC Range < 100 g/L Higher VOC (typical solvent aerosol < 550 g/L) Volume Solids (±2%) 38.9% ~35–40% (typical for Zinsser solvent aerosols) Coverage 400–440 sq. ft./gal (37–41 m²) 10–12 sq. ft./can Recommended Film Thickness (mils) Wet: 2.5–5.0 • Dry: 1.0–2.0 Dry: 1.5–2.5 Dry Time (70°F, 50% RH) Touch: 30 min • Recoat: 1 hr Touch: 10–20 min • Recoat: 30 min Full Cure 7 days 1–3 days Application Temp Range 50–90°F (10–32°C) 50–90°F (10–32°C) Application Method Brush, roller, or airless spray (0.017–0.019 tip at 2000–2500 psi). Apply generously. Aerosol spray; hold 8–14" (20–35 cm) from surface. Apply multiple light passes. Clean Up Warm soapy water Mineral Spirits / Xylene • Clear tip by spraying upside down Odour Low Moderate solvent odor Flash Point > 200°F (non-flammable) Extremely flammable aerosol (propellant flash point < −100°F) Mold / Mildew Resistance Resists mold, mildew, fungal growth on the paint film Same — prevents mold/mildew growth on the film, fast-dry for rapid remediation Topcoat Compatibility Any latex or oil-based topcoat • Ideal under Perma-White® Latex or oil-based topcoats once fully dry Best Uses Full rooms, drywall, ceilings, basements, bathrooms, subfloors, attics, commercial interiors. Spot repairs, studs, corners, detail areas, odor/mold patches, behind trim, quick sealing before restoration. Limitations Not for floors, decks, immersion, or new unpainted aluminum/vinyl siding. Fix moisture source first. Not for large areas. Extremely flammable — use ventilation. Not for galvanized metal. Shelf Life 1 year (unopened) 3–5 years (typical for Rust-Oleum aerosols)

 

 

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 TECHNICAL DATA SHEETS

• TDS - Mould Stop Primer