Your K-Rend walls cleaned of moss, lichen and stains, and restored to their former colour — guaranteed

Say goodbye to K-Rend filled with stains and algae. Our specialist cleaning system removes all traces of dirt and moss growth, leaving the natural colour to shine through

Book your FREE no-obligation K-Rend cleaning estimate today by calling Cornish Window Cleaning on

01208 75476

If the K-Rend on your home is more than a few years old, it’s probably beginning to show its age. Brown stains where the rainwater has run down the surface. The growth of algae and moss creating dark patches. Overall, your home has started to look shabby and unattractive.

A common way to bring the K-Rend back to its former colour is to use “power washing” (which uses the force of water to remove the stains).

But high-pressure cleaning doesn’t cure the underlying problem — the bacterial infection. This means the moss and lichen will start to grow again almost immediately. Within just a few weeks the moss will start to appear once more, meaning another power-washing treatment will need to be carried out.

It can also take several treatments to clear the moss and stains completely, and repeated use of high-pressure cleaning can damage the render’s surface.

On top of all this, using power washing on K-Rend can invalidate your guarantee, which means you’re liable for any faults that occur later in the render’s surface. You may have to replace the render completely, with all the huge costs associated with it.

The Solution

The solution is to use the “Softwash” system, a gentle yet highly-effective cleaning technique that quickly removes moss and lichen from your K-Rend walls and no matter how heavy the soiling and discolouration. Weather stains disappear too, bringing your walls back to the original vibrant colour. Softwashing works on all K-Rend colours.

Softwashing not only cleans your rendered walls completely in one application and allows the original surface colours to shine through — it also contains a bacteriacide which kills the spores so that the moss and lichen which causes the stains is kept at bay for much longer.

A Tailored Solution

The Softwash system isn’t a “one-size-fits-all” system. After inspecting your walls, we create a washing solution specifically for that job, depending on the level of cleaning required. This guarantees you get the best possible results and long-term solution to keeping mould and moss growth at bay.

A Full Service

Before applying the Softwash solution, we remove all surface mosses and lichens to make sure the solution touches every part of the surface. This makes sure the solution removes every stain and all traces of moss.

We also take all necessary precautions and measures to protect the surrounding area when we apply the Softwash solution. This includes making sure all plants and greenery are protected from the solution so there is absolutely no damage to your garden.

Trained in excellence

Every member of our cleaning staff is fully-trained in how to use the equipment and how to follow all relevant Health and Safety rules. This means you don’t have to worry about incompetent cleaning staff damaging your property, and you’ll know that the cleaning is being carried out in a safe and effective manner.

Staff you can trust

All members of staff have undergone a Disclosure and Barring Service (DBS) check to make sure they have no criminal convictions and can be fully trusted with access to you property, giving you total peace of mind at all times.

Fully guaranteed

You also receive a rock-solid guarantee on every single cleaning job that we will return within five days and put right anything you’re not happy with — without quibble or argument.


But don’t take our word for it. Just look at what some of our many satisfied clients have said about us on our testimonials page.

Book your free no-obligation K-Rend cleaning survey today

Remember, our surveys are completely free and carry absolutely no obligation on your part.

We carry out guaranteed K-Rend cleaning work in all areas of Cornwall and many other parts of the South West.

Our office is open Monday to Friday 9.00 am – 6.00 pm.

If calling outside of office hours, please leave a message with your contact details and we will get in touch with you.

Alternatively, to arrange your free render cleaning survey, enter your details below.

We look forward to serving you.

James Marks and Graham Hichens
Cornish Window Cleaning

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