Why render becomes discoloured
Exterior render can develop algae and surface staining, particularly in shaded or damp areas. Cleaning should be planned around the type of render, the growth present and the condition of the finish.
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Refresh the walls. Respect the finish.
Render & K-Rend Cleaning
Render and K-Rend cleaning for homes and businesses across Basingstoke, Hampshire, Berkshire, Surrey and Oxfordshire. Discuss algae, surface staining and a method suited to your walls.
K-Rend full clean & treatment
£5–£8 per m²Includes the full clean and specialist treatment. Price depends on algae build-up, render condition and access.
Guide prices only. The scope and final price are confirmed before booking.
Understand your clean
What the service involves.
K-Rend needs suitable care
K-Rend is a render brand, rather than a name for every rendered wall. Its maintenance guidance includes suitable algae treatments. Let us know which system you have, if known, so the appropriate approach can be discussed.
Our K-Rend cleaning process
We brush a specialist treatment formulated for K-Rend onto the surface, leave it to work on the algae, then rinse it off. We never use pressure washing on K-Rend.
Specialist treatments
Our specialist treatment is selected specifically for K-Rend and allowed time to work on the algae before rinsing. We’ll discuss access and arrangements around nearby planting before work begins.
A clear plan before booking
Three simple steps.
01
Show us the area
Send photographs, your postcode and any access details. Mention the material and any particular problem you want addressed.
02
Agree the work
Discuss the approach, expected results and any additional treatment or finishing stages. Confirm the scope and price before booking.
03
Arrange your visit
Agree a date, access and any preparations needed, including a water supply where required.
Your questions answered
Before you book.
Do you clean render and K-Rend?
Yes. We clean exterior render, including K-Rend, using a soft wash technique and specialist treatment suited to the surface. Send photographs of the areas you’d like cleaned and tell us the render type if you know it.
How do you clean render?
We use a soft wash technique. For K-Rend, we brush on a specialist treatment, allow it time to work on the algae, then rinse it off. We never pressure wash K-Rend.
What happens before the clean?
We discuss the render, staining, access and scope, then agree a quote. Please point out cracks, damaged areas, previous repairs or coating changes when enquiring.
What results can I expect from render cleaning?
We have a strong reputation for high-quality work and take pride in achieving the best possible results for your render. Cleaning can make a significant difference to algae and surface staining. The final result depends on the type and condition of the render and the cause of the marks; damage or permanent discolouration may remain. Send photographs so we can discuss the likely result before you book.
Will algae return?
After cleaning, render can generally stay bright for two to three years. How long it lasts depends on the surroundings, particularly whether there are trees or dense greenery close to the walls and how much shade the render receives.
How is the treatment applied?
The specialist K-Rend treatment is brushed onto the render and left to work on the algae before rinsing. We can explain the expected results and any preparations needed around your property.
How much does render cleaning cost?
K-Rend cleaning ranges from £5 to £8 per square metre, including the full clean and specialist treatment. Algae build-up, render condition and access affect the price. Send photographs of each wall and your postcode for a confirmed quote.
How do I get a quote?
Please send your full address and postcode, along with photos of each rendered wall you’d like cleaned if possible. Include close-ups of any algae or staining and tell us the render type if you know it. Please mention any damaged areas or access restrictions. We’ll review the details and put together a quote.
Can I book more than one service?
Yes, we can combine services in one visit. You can book gutter clearance, gutter, fascia and soffit exterior cleaning, render and K-Rend cleaning, driveway cleaning, patio cleaning and decking cleaning. Just let us know what you’d like cleaned and we’ll put together a quote.
Do you work with businesses too?
Yes. We provide this service for homes and businesses. Send your full address and postcode, photos if possible, and any access requirements so we can discuss the work and put together a quote.
Contact Block Clean UK
Let’s discuss your property.
Render cleaning across Basingstoke, Hampshire, Berkshire, Surrey and Oxfordshire. We cover towns including Hook, Fleet and Winchester in Hampshire; Reading, Wokingham and Newbury in Berkshire; Farnham, Guildford and Weybridge in Surrey; and Henley-on-Thames, Wallingford and Oxford in Oxfordshire, plus surrounding towns and villages. Send your postcode so we can confirm availability, or view all areas covered.
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