How to Remove Mould and Lichens from Outdoor Terracotta: Intervention in a Villa in Tuscany with ALGANET®
24 June 2025
Learning how to remove mould and lichens is crucial for maintaining outdoor surfaces. This knowledge helps preserve both the aesthetic and functional value of materials like terracotta.
In a villa nestled in the Tuscan countryside, the company DELTA Applicazioni Speciali restored an outdoor terracotta floor. The surface was severely affected by mould, lichens, moss, and blackening.
The team performed a deep cleaning followed by a targeted protective treatment. They used highly effective products, including ALGANET® and TIM®.
Cleaning Phase: Goodbye to Lichens and Black Stains
To remove biological encrustations, the team used ALGANET®—a powdered stain remover specifically designed for outdoor stone surfaces. Its high effectiveness allowed them to deeply eliminate dirt and black stains without damaging the material.
They applied the product to the surfaces, let it act, and then rinsed it thoroughly. When necessary, they repeated the treatment to remove even the most stubborn encrustations.
Protection Phase: A New Shield for Terracotta
After the cleaning phase and once the surfaces were completely dry, TIM® was applied—a transparent protective treatment that does not alter the appearance of the material.
TIM® is designed to protect terracotta from stains, water, and dirt, making it more resistant to external agents. Additionally, since it is breathable, it allows the material to “breathe,” preventing moisture-related issues over time.
The Result
The terracotta flooring now shows its natural colour and a refreshed appearance that immediately catches the eye. Thanks to the protective treatment, maintenance becomes easier and the surface resists future biological contamination more effectively.
DELTA Applicazioni Speciali carefully handled this intervention, demonstrating how the right products and a bit of care can restore and enhance even heavily damaged surfaces—bringing them back to life and beauty.
Now that you know how to remove mould and lichens using professional and safe methods, you too can recover the original look of your surfaces and preserve their beauty over time.
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