Soft wash roof cleaning is a low-pressure cleaning method used to remove moss, algae, lichen and organic staining from roof tiles and slates. Where required, moss is first removed manually before a professional biocide treatment is applied to clean the surface and help prevent rapid regrowth, without the risks associated with high-pressure washing.

Pressure washing uses controlled water pressure to remove dirt, moss and surface build-up, while soft washing uses low-pressure application with professional cleaning solutions and biocide treatments. The most suitable method depends on the roof type, its condition and the result required.

Soft washing is suitable for most roof types, including tiles, slate and metal roofing. It can also be used on many other exterior surfaces such as render, walls, facias, soffits and other building surfaces. The method and cleaning solution are always adjusted to suit the material and condition of the surface.

This depends on the roof type, surrounding environment and weather conditions. Factors such as nearby trees, shade, moisture and the roofing material itself, including concrete tiles, clay tiles or natural stone, can all affect how quickly organic growth returns. Every roof is different, but in many cases a professional soft wash treatment can help keep the roof cleaner for up to around 5 years. After this time, algae and light organic staining may gradually begin to reappear, with moss developing again over time.

When carried out correctly, soft washing is safe for the surrounding property and landscaping. We take precautions such as pre-wetting and rinsing plants, protecting sensitive areas and carefully controlling the application of cleaning solutions. Each property is assessed individually so the treatment can be applied safely and appropriately.

Soft washing improves the appearance of your roof by removing algae, lichen, moss and organic staining. It also helps keep the roof cleaner for longer, reduces the build-up of organic growth and moisture on the surface, and can make future maintenance easier. A clean roof can also significantly improve the overall appearance and kerb appeal of the property.