AlgoClear Pro - Softwash Scotland Case Study

This case study was written by Softwash Scotland. All videos, images, and project details are courtesy of Softwash Scotland.

Written and illustrated by James Mcginty, October 1, 2025

At Softwash Scotland, we are proud to be recommended by K Rend and their applicators to clean and maintain render systems safely. This ensures our methods deliver lasting results without risking your warranty – something that can’t always be said for other cleaning companies.

Recently, a client got in touch after their TC15 silicone render had developed green algae. Their render applicator had advised them that, after 3 years, the render should be cleaned with a professional softwash chemical treatment—and specifically recommended that they call Softwash Scotland.

When we visited the property, we carefully explained our process to the client and provided a tailored quote. For this project, we used:

• AlgoClear Pro – an approved softwash solution that gently but effectively removes algae and organic growth from render.
• DDAC biocide – to prevent regrowth and extend the lifespan of the clean.

Unlike harsh pressure washing, our softwash cleaning method works with the natural weather cycle. Once applied, AlgoClear Pro continues to work with the rain over time, gradually breaking down algae and restoring the render’s original appearance. This results in a deep, long-lasting clean without damaging the render surface.

It’s worth highlighting that K Rend themselves recommend AlgoClear Pro and softwash cleaning for maintaining their render systems. That means:

By choosing Softwash Scotland, clients can be confident that:

• Their render warranty will not be invalidated
• The render is cleaned with a method approved by both the applicator and K Rend
• Surfaces are treated safely, with no risk of damage from abrasive cleaning methods

Unfortunately, some companies offering render cleaning in Scotland are not approved and may use harsh techniques that can damage your render and potentially invalidate the guarantee. Choosing Softwash Scotland ensures you are working with a trusted and recommended provider.

As advised by the render applicator, this clean was carried out three years after installation. To maintain results, we recommended a maintenance clean every 3 years using our softwash chemical treatments. This approach keeps the render looking fresh, prevents deep algae build-up, and ensures long-lasting protection.

A few weeks after applying AlgoClear Pro, the difference was clear. The green algae had broken down and washed away with the rain, leaving the TC15 silicone render bright, clean, and refreshed. The surface regained its original appearance without any damage, exactly as recommended by K Rend.

The client was delighted with the transformation and the reassurance that the clean had been carried out using an approved, warranty-safe method.