Professional-Strength Surface Biocide for Pre-Treatment of Mould, Fungus & Algae

Biokil Crown ACS Mould Wash Concentrate is a powerful, concentrated biocidal cleanser designed to prepare interior and exterior surfaces by effectively removing mould, mildew, algae, and moss before painting or waterproofing. Simply dilute and apply with a brush, cloth, or spray to kill microbial growth at the root and prevent regrowth. Ideal for use on masonry, render, tiles, wood, and painted surfaces.

Key Features & Benefits

• Highly Effective Biocide: Formulated to eradicate mould, mildew, algae, and lichen from porous and non-porous surfaces.
• Prepares Substrates: Ensures contamination-free masonry or render for applying damp-proof or anti-condensation coatings.
• Economical Dilution: Typically diluted at 1:19, a 250 ml bottle makes up to 5 litres of solution—covering up to ~60 m² depending on porosity. 
• Quick Action: Surface dries within 1–4 hours depending on ambient conditions. Heavy soiling may require a second application.
• Safe Surface Use: Suitable for use on internal and external masonry, woodwork, tiles, patios, driveways, and roofs. Not recommended near watercourses.

Technical Specifications

• Pack Size: 250 ml concentrate bottle (makes 5 litres of working solution)
• Coverage: ~50–60 m² per diluted batch (varies with surface porosity)
• Drying Time: 1–4 hours after application
• Dilution Ratio: Standard 1:19 (1 part concentrate to 19 parts clean water); heavier contamination may use 1:9
• Application Method: Apply by brush, sponge, or sprayer—leave to dry before decorating or sealing

Typical Uses

• Eradicating mould, algae, lichen, and fungi from walls, ceilings, patios and tiles
• Surface pre-treatment before applying paint, render, waterproof coatings or condensation control systems
• Ideal for damp-prone conservatory walls, basements, bathrooms, kitchens, and utility rooms
• Part of professional-grade mould control systems when used with Anti-Mould Emulsion or Mould Control Kits