How Do You Remove Red Stains (Trentophilia) from Render?

There are a few steps you can take to remove red stains (such as trentophilia stains) from render using a soft wash system


1. Identify the type of red stain you are dealing with. Trentophilia stains are caused by a type of algae, so it’s important to determine that this is the type of stain you are dealing with before proceeding. For example rust stains or fertiliser stains may be confused with organic (Trentophilia) staining.


2. There are chemicals such as Green Wash available that are specifically designed to remove red stains from render. These should be applied according to the manufacturer’s instructions.


3. Use a soft wash system to apply a soft wash cleaning solution to the affected area. A soft wash system uses low pressure to apply a safe bleach based cleaning solution to the surface, helping to breakdown and remove the stains. Be sure to follow the manufacturer’s instructions for the specific system and cleaning solution you are using.


4. Rinse the affected area thoroughly with clean water. This will help to remove any remaining cleaning solution and stains from the surface.


5. Apply Final Wash to the surface to neutralise the bleaching agents used.


6. Repeat the process if necessary. If the stains are particularly stubborn or persistent, you may need to repeat the process a few times to completely remove them.


7. Use plant wash to treat any grass, flowers, shrubs or trees to prevent plant life going into shock and dying.


It’s important to note that professional training and equipment are necessary to safely and effectively use a soft wash system. It is not recommended to attempt to remove red stains or perform any other type of cleaning on render without the proper training and equipment.

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