Practical Guide: How to Remove Algae, Mould, Moss and Lichen from Outdoor Porcelain Tile and Ceramic Surfaces

Outdoor surfaces made of porcelain tile and ceramic can develop algae, mould, moss and lichen over time, especially in damp and shaded areas.
Therefore, this guide explains when to take action and how to clean these surfaces correctly, removing biological growth without damaging the material. You will also learn how to remove algae, mould, moss and lichen from porcelain tile safely and effectively while restoring the original appearance of outdoor surfaces.
When to Clean
- dark stains and discolouration
- surface biological deposits
- algae, moss or lichen growing in grout joints
- slippery surfaces
- loss of visual uniformity
Type of intervention: extraordinary cleaning, to be repeated only when necessary.
Where to Use It
- outdoor porcelain tile floors
- outdoor ceramic surfaces
- terraces, balconies, courtyards and walkways
STEP 1 – Stain Removal Treatment
Product: ALGANET®
To remove algae, mould, moss and lichen from porcelain tile, use ALGANET® by carefully following the instructions below.
- dissolve 800 g of ALGANET® in 10 litres of water
- apply the solution evenly over the surface
- work the product in using a hard brush or a BROWN BUFFER PAD
- leave to act until completely dry (approximately 24 hours)
- rinse thoroughly with plenty of water or a pressure washer
- repeat the treatment if necessary

👉 Read the product datasheet for ALGANET®
Important When Using ALGANET®
- ALGANET® must not be used together with acidic products
- while applying the liquid product, avoid direct contact with wood, metals, fabrics, soil and vegetation
- before drying, make sure the product does not come into contact with plants or flower beds
When used correctly, ALGANET® provides a reliable and safe solution for cleaning outdoor surfaces, especially when removing algae, mould, moss and lichen from porcelain tile without damaging the material.
Final Result
The surface becomes:
- deeply cleaned
- free from algae, mould, moss and lichen
- more uniform and less slippery
Technician’s Tip
For routine cleaning of outdoor floors, we recommend using ECOMARBEC. It cleans and degreases effectively and is safe for plants when used correctly.
After completing the extraordinary cleaning with ALGANET®, and once the surface is perfectly clean and dry, you can also apply ANTISPORCO. This protective treatment is specifically designed for porcelain tile. It reduces dirt absorption, makes routine maintenance easier and helps limit the reappearance of algae and biological films over time.
Where and when
Frequency of use:
Performance and consumption
PRODUCTS USED IN THIS PRACTICAL GUIDE
4.23€
5.65 €
BROWN BUFFER PAD | Very Abrasive
High-abrasion brown buffer pad for deep cleaning, wax removal and restoration of terracotta, porcelain stoneware, natural stone and non-polished cement-based surfaces, enhancing the effectiveness of cleaners during extraordinary cleaning operations.
14.68€
BROWN DISC MARBEC | Very Abrasive
The BROWN DISC is composed of a polyester structure with a high density of resin and mineral. It has high resistance to acid or alkaline substances, it is used wet to carry out manual dewaxing and descaling washes. Ideal for: Descaling cleaning on cotto and porcelain tiles; Dewaxing cleaning on cotto, stone and cement.
16.76€
ANTISPORCO
Stain protection treatment for matte, polished and lapped porcelain tiles. Reduces the absorption of dirt and stains by creating an invisible, non-film-forming protective barrier that makes routine cleaning faster and easier without altering the appearance of the surface.
4.97€
6.62€
PALMPRO 363 CHEMICAL SAFETY GLOVES
Reusable polychloroprene chemical protection gloves with soft internal flock lining and anatomical design, engineered to ensure high chemical resistance, safety and long-lasting comfort.