Modern render wall coatings are being colonised by red and green algae due to improved insulation and surface textures that hold water for longer and are slower to dry.

Hey there! Have you noticed a red tint on your building’s render lately, and thought; Why is my render going red? Don’t worry, you’re not alone. Many modern buildings are facing the same issue due to the misconception of “virtually maintenance-free” building coatings.

Here’s the deal: no surface finish can maintain its appearance without some form of care or cleaning, even the “self-cleaning glass.” The reason for this red tint on modern renders is the colonisation by red and green algae, lichens, and mosses. These organisms thrive on the textured and somewhat porous surface profile of modern renders like K-rend, Monouche, and Sto, which allows rain water to remain on the surface longer and slows down the exterior drying process.

So, why exactly is my render going red?

The perfect environment for red algae to thrive on building exteriors is created by the combination of textured and porous surfaces, improved air quality, and increased insulation values. The red and green algae, lichens, and mosses build upon one another in a symbiotic relationship and find our building exteriors a perfect representation of their natural habitat.

What can be done about it?

The low pressure softwash method is the perfect solution to remove red algae staining on modern renders. This method uses low pressure water and a specialised cleaning solution to safely remove the red tint and restore the render to its original colour.

Is the low pressure softwash method safe for my render?

Yes, the low pressure softwash method is safe for your render. The method uses low pressure water and a specialized cleaning solution to remove the red algae staining, which is commonly seen on modern renders. The solution is designed to safely remove the stains without damaging the surface or causing any harm to the environment. The low pressure of the water used during the process ensures that no damage is caused to the render, ensuring that it remains intact and protected. This method has been tested and proven to be safe and effective, making it a great option for those who want to restore their render to its original color without damaging it in the process.

The Final Word

In conclusion, don’t let the misconception of “virtually maintenance-free” building coatings fool you. The red tint on modern renders is a common issue caused by the colonisation of red and green algae, lichens, and mosses. The low pressure softwash method is a safe and effective solution to remove the red tint and restore your render to its original color.

If you have any questions or need help with render cleaning, feel free to reach out. I’m here to help!