Rendered walls give your home a clean, modern silhouette — until the render itself starts turning green, streaked or blotchy. Whether you have traditional sand-and-cement, K-Rend, monocouche or a modern silicone system, our render cleaning service brings the finish back to how it looked the day it was applied, using hot steam rather than pressure or aggressive chemistry.
What's actually involved
Render is fragile. It's designed to shed water, not to be blasted with it. Our render cleaning process uses a professional hot-steam system: temperature does the work instead of pressure, killing algae, moss and mildew on contact and lifting the biological staining as we go. Heavily soiled areas may need a second pass, but we don't crank the pressure up to finish faster — steam is the whole point.
The right method for your render
Different renders demand different approaches. Silicone and self-cleaning renders (K-Rend, Weber, Parex) are cleaned with the steam system tuned to protect the hydrophobic surface. Traditional cement or pebbledash render tolerates a firmer pass. Painted render is treated with the paintwork in mind — we test a small area first and adjust before committing to the full elevation. In every case, the goal is the same: remove the biological growth, protect the finish, and leave the render evenly clean rather than patchy.
What to expect on the day
We'll cover plants, decking and windows before we start and rope off the working area for your safety. Most semi-detached houses are completed in a single day; larger detached properties or houses that need scaffolding for high gables may run to two. The render is visibly clean by the time we pack up — you're not waiting weeks for a chemical to finish the job.
Aftercare and how long the results last
A properly steam-cleaned render typically stays clean for 2–4 years before it's worth revisiting — north-facing walls, walls under trees, and coastal properties re-soil faster. A light annual maintenance visit massively extends the interval between full cleans.
Common issues we solve
- Green algae streaks running from window sills, drip edges and gutter joints
- Black spotting and mildew on north-facing elevations
- Red-brown iron staining from old fixings or gutter runoff
- Patchy, uneven weathering that leaves the render looking blotchy
- Fresh renders that have never been cleaned and are beyond a quick rinse
Fully insured, backed by our 12-month satisfaction guarantee, and specialists in K-Rend and silicone systems. Ask us for a free written quote and we'll come and inspect the render before recommending anything.
