Render Cleaning & Softwashing in Kent

Render cleaning prices depend on the size of the property, the amount of algae or staining, access requirements and the type of render. As a rough guide, a typical two-storey semi-detached render clean starts from around £165 per side.

We’re not usually the cheapest option because we don’t just blast the surface and leave. Our render cleaning process uses softwash treatment, gentle rinsing and biocide protection where suitable to clean algae, mould and organic staining safely.

For the most accurate quote, send a few clear photos of the affected walls and your postcode. We can usually give you a fast estimate without needing to visit first.

Render usually turns green or stained because of algae, mould, lichen and organic growth building up on the surface. This is especially common on shaded, damp or north-facing walls where sunlight and airflow are limited. Over time, dirt, pollution, rainwater marks and biological growth can make render look tired, patchy and neglected. Professional render cleaning and softwashing helps remove the staining safely without harsh pressure washing, then biocide treatment can help slow future algae and mould regrowth.

Pressure washing can damage render, especially if the surface is cracked, blown, painted or delicate. High pressure can leave patchy marks, force water behind the render or damage the finish. That’s why we use render softwashing, gentle rinsing and targeted treatment instead of harsh jet washing.

Render cleaning can be carried out year round, but spring, summer and autumn are generally best. Warmer, drier weather helps softwash treatment and biocide protection work more effectively. If your render is already green, stained or covered in algae, mould or organic growth, it is usually better to clean it sooner rather than letting the staining get worse.

We take care around plants, windows, doors, painted surfaces and surrounding areas before applying any render cleaning treatment. Where needed, we pre-rinse, protect and rinse down nearby areas to reduce risk. Render softwashing should always be carried out carefully, especially around delicate finishes, glass, frames, lead flashing and garden areas.

Results depend on the render type, weather exposure, shade, airflow and nearby trees or plants. Treated render usually stays cleaner for much longer than a simple rinse because biocide protection helps slow algae, mould and organic regrowth. Where we clean and treat render for organic growth, it is backed by our minimum 12-month no organic re-growth guarantee and we also offer 6-12 monthly biocide re-applications.