Professional Moss Removal & Roof Cleaning
Across Swanley, Sevenoaks & Croydon & South London
Restore your roof's kerb appeal with safe, soft-wash biocide treatments. Kevington Roofing and Building LTD brings 25 years of local expertise.

Every roof requires a specific approach depending on the age and condition of the materials. We never use aggressive, high-pressure washing systems that can strip the protective granular finish off concrete tiles or dislodge fragile slate. Instead, our highly trained team follows a meticulous, safe, and highly effective soft wash and manual scraping process.Initial Assessment: We begin with a thorough inspection of your roof's condition to identify broken tiles, weak mortar, or areas of water ingress.Manual Scraping: Our roofers carefully remove thick moss and debris by hand, using bespoke profiling tools designed specifically for your tile shape to ensure no damage occurs.Biocide Treatment: Once the heavy moss is cleared, we apply a premium, environmentally responsible biocide treatment. This targeted soft wash kills remaining lichen and algae spores at the root, preventing rapid regrowth and keeping your roof cleaner for years to come.Gutter Clearing: As part of the service, we thoroughly clear your roofline, ensuring that all dislodged moss is removed from your UPVC fascias, soffits, and guttering to leave your drainage system flowing perfectly.Looking to assess your roof's condition safely before work begins? Ask about our drone roof surveys for a crystal-clear aerial view of your property.

Investing in routine roof maintenance offers significant long-term benefits for your home. Moss acts like a sponge, absorbing rainwater and holding constant moisture against your roofing materials. During the freezing winter months, this moisture expands, which can crack, lift, or completely break clay and concrete tiles. By removing this threat, you are actively extending the lifespan of your roof.Beyond tile protection, professional cleaning stops loose moss from washing down into your gutters during heavy downpours. Blocked gutters are a leading cause of damp penetrating external walls. Furthermore, a clean, dry roof significantly improves your home's thermal efficiency, as damp materials transfer cold into your loft space much faster than dry ones. Whether you are preparing to sell your property and want to boost kerb appeal, or simply protecting your forever home, our expert algae treatment and roof cleaning service provides ultimate peace of mind.Need help with ongoing drainage issues? Explore our gutter cleaning and repairs services to keep your property fully watertight.

Working at height requires strict adherence to health and safety regulations, and this is where our 25 years of experience truly matters. As a fully registered UK company (No: 12676001), Kevington Roofing and Building LTD handles all safety compliance, access requirements, and scaffolding arrangements on your behalf. We ensure that your moss removal project is carried out in total compliance with UK building regulations and local authority guidelines, giving you complete reassurance.We directly employ all our staff, meaning you will never have unknown subcontractors turning up at your home. Every member of our team is fully covered by comprehensive public liability insurance. We respect your property, protecting your driveway, windows, and surrounding gardens from falling debris during the cleaning process. When you choose us, you are choosing a compliant, trustworthy local expert who prioritises safety just as much as a high-quality finish.If we spot any underlying damage during the clean, our team is fully equipped to handle emergency roof repairs swiftly and safely.

Frequently Asked Questions About Roof MaintenanceIs roof moss actually damaging my property?Yes. While a small amount of moss might look harmless, it retains a vast amount of water. This constant dampness degrades your roofing materials, leads to frost damage in winter, and increases the weight load on your timber roof structure.Do you use pressure washers on roofs?No, we strongly advise against high-pressure washing for most pitched roofs. Jet washing can force water under the tiles, strip their protective coatings, and cause interior leaks. We use safe manual scraping combined with an effective biocide soft wash.How long will the biocide treatment keep my roof clean?Our professional-grade biocide treatment continues to clean your roof for months after application by breaking down stubborn black lichen and green algae. Depending on your property's surroundings, such as overhanging trees in rural Sevenoaks or Swanley, it can protect your tiles from regrowth for several years.Will the cleaning process cause a mess around my home?Not at all. We place protective sheeting over your patios, conservatories, and lawns to catch any falling debris. Before we leave, we conduct a complete tidy-up and ensure your gutters and downpipes are clear and running freely.