Sodium Hypochlorite For Soft Washing 14% to 15%

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It is commonly used as part of a controlled softwash process on patios, driveways, roofs, cladding, render and other compatible hard surfaces where organic staining, black lichen and weather-related contamination are present. Supplied as four 5 litre containers, giving a total of 20 litres. Key Benefits Professional strength sodium hypochlorite, typically 14% to 15% Suitable for softwashing and exterior cleaning applications Useful for patios, driveways, roofs, cladding, render and compatible hard surfaces Can help remove organic staining and black lichen when used correctly Can be mixed with Clever Wash surfactant to improve cling and dwell time Supplied as 20 litres in four 5 litre containers Who Is This Product For? Softwashing contractors Pressure washing businesses Roof cleaning professionals Render cleaning specialists Driveway and patio cleaning companies Competent users who understand chemical handling and safe application Suitable Applications Patio cleaning Driveway cleaning Roof tile cleaning Render cleaning Cladding cleaning Hard surface softwashing Black lichen treatment on suitable surfaces Organic staining removal from compatible exterior surfaces Always carry out a small test patch before full application to confirm surface compatibility. Why Use Sodium Hypochlorite for Softwashing? Sodium hypochlorite is widely used in exterior cleaning because it reacts quickly with organic staining and can provide visible colour change during application. When used correctly, it can be highly effective on suitable hard surfaces affected by biological staining, black lichen and weather-related contamination. It must be handled responsibly. Correct dilution, surface testing, PPE, runoff control and rinsing are essential. Using with Clever Wash Surfactant Sodium hypochlorite can be used with Clever Wash surfactant to improve cling, wetting and dwell time on vertical or textured surfaces. This can help the solution stay in contact with the surface for longer, particularly on render, cladding and uneven surfaces. Technical Information Specification Detail Product Type Sodium hypochlorite exterior cleaning chemical Typical Strength 14% to 15% Pack Size 20 litres total, supplied as four 5 litre containers Common Use Softwashing and exterior cleaning of compatible surfaces Maximum Suggested Mix Guide 1 part sodium hypochlorite to 3 parts water, subject to surface and task assessment Surfactant Compatibility Can be used with Clever Wash surfactant Storage Store cool, dark, sealed and secure Mixing and Application Guide General Softwash Mixing Guide Assess the surface, contamination level and surrounding risks before mixing. Remove loose debris from the surface where practical. Prepare your sodium hypochlorite and water mix at a suitable strength for the surface. Add Clever Wash surfactant where improved cling and dwell time are required. Apply evenly using suitable softwash equipment. Allow appropriate dwell time while monitoring the surface. Do not allow the solution to dry out on sensitive surfaces. Rinse thoroughly with clean water where required. Important Surface Notes Do not assume all surfaces are suitable for sodium hypochlorite. Always test first before treating a full area. Protect plants, lawns, ponds, metals, painted surfaces and sensitive materials. Some surfaces may require lower strength solutions or alternative cleaning methods. Black lichen and heavy staining may require agitation, repeated application or additional dwell time. Results vary depending on surface type, porosity, contamination level and weather conditions. Safety and Responsible Use Always read the product label and Safety Data Sheet before use. Wear suitable PPE including gloves, eye protection and protective clothing. Use respiratory protection where required by your risk assessment. Do not mix sodium hypochlorite with acids, ammonia or incompatible chemicals. Protect surrounding vegetation and rinse before, during and after where appropriate. Prevent solution and runoff from entering surface water drains. Store securely, upright, cool and away from direct sunlight. Keep away from children, animals and unauthorised users. Important Regulatory Information Sodium hypochlorite solutions above 6% available chlorine are classified as reportable poisons under the Control of Explosives Precursors and Poisons Regulations 2023. Buyers must be aged 18 or over and may be required to complete age verification before purchase. Suspicious transactions may be reported in accordance with legal requirements. Purchase is permitted for legitimate use, but buyers are responsible for safe storage, handling and use. Delivery and Packaging This product is supplied as a 20 litre pack consisting of four 5 litre containers. Products are packaged for safe transport and should be inspected on arrival before storage or use. Frequently Asked Questions What strength is this sodium hypochlorite? This product is typically supplied at 14% to 15% strength. How much product is supplied? The pack contains 20 litres in total, supplied as four 5 litre containers. Can I use sodium hypochlorite on all exterior surfaces? No. Suitability depends on the surface material, condition, contamination level and dilution. Always test a small area first. Can I use this with Clever Wash? Yes. Clever Wash surfactant can be added to help improve cling, wetting and dwell time. What is the strongest mix I should use? A common maximum guide is 1 part sodium hypochlorite to 3 parts water, but the correct strength depends on the surface, level of staining and risk assessment. Should I rinse after application? Rinsing is often required, particularly around plants, metals, painted surfaces, glass, windows, doors and areas where residue or runoff could cause problems. Can I store mixed solution? It is best to mix only what you need. Sodium hypochlorite strength reduces over time, especially once diluted. How should I store the product? Store sealed, upright, secure, cool, dark and away from direct sunlight and incompatible materials. Is age verification required? Yes. Because sodium hypochlorite above 6% available chlorine is a reportable poison, buyers must be 18 or over and may be required to complete age verification. Need Professional Softwash Training? If you want to understand sodium hypochlorite use properly, including dilution, surface assessment, PPE, COSHH, runoff control, application methods and professional softwashing practice, SoftWash UK provides specialist training for exterior cleaning contractors. View SoftWash UK Training Courses Product Documentation Sodium Hypochlorite SDS Sheet: Click here to view the Safety Data Sheet UK Government Regulatory Information: View official guidance on explosives precursors and poisons Show more