Zinsser Mold Killing Primer is a protective, water-based coating that can be applied directly over existing mold, mildew and odor-causing bacteria. Featuring a proven, registered and approved antimicrobial-fungicidal agent, it not only covers over associated stains but also kills all pre-existing fungal organisms. Use it directly on nearly any dry, debris-free, non-porous, interior or exterior surface with minimal pre-cleaning in just about any residential, commercial or industrial environment: homes, offices buildings, retail establishments, schools, hospitals, factories and more. And though this primer is compatible with any topcoat product, it pairs perfectly with Zinsser PERMA-WHITE Mold & Mildew-Proof™ paints. To fully cover over and obscure heavy stains, particularly those caused by water leaks, a second primer coat with a tailored, stain-blocking product may be required. In such scenarios, BIN and Cover Stain primers are highly recommended.

Why customers choose this product

• Paint directly over mold, mildew and stains.
• Kills existing mold, mildew and odor-causing bacteria.
• Protective, water-based formula for interior and exterior use.
• Binds to chalky siding, masonry, metal, plaster and more.
• Ideal for residential, commercial and industrial environments.
• For extensive stains, pair with a Zinsser stain-blocking primer.