Effectively remove green deposits - 5 methods for sparkling clean paving surfaces

Stone and paved areas are the visual highlight of every garden and entrance area. They define paths, set aesthetic accents and form the foundation of the outdoor design. But what happens when these areas are taken over by an unwelcome green veil? Green growth - a mix of algae, moss and lichen - can affect the appearance and longevity of your stone and paving surfaces. But don't worry, there are effective methods to remove this growth and make your surfaces shine like new.

How does green growth form?

There are various reasons why green deposits form outdoors. Often, damp conditions encourage the growth of algae, moss, etc. Shady areas are also more susceptible to green deposits because they receive less sunlight. In addition, organic residues such as leaves or pollen on the terrace can encourage the growth of green deposits. But don't worry, we have the right methods to remove them.

Why it is important to remove green growth

Green growth is much more than just a visual nuisance; it also poses serious risks. The slippery surface created by the growth can quickly become a danger for family and visitors. In addition, removing the dirt becomes more and more challenging over time. The timely and thorough removal of green growth is therefore not just a question of aesthetics, but also of safety and maintaining the value of your property.

Let’s now get straight to the promised 5 methods:

1. Mechanical removal: The basis

The mechanical removal of moss, green growth and algae is one of the most fundamental cleaning methods that requires neither specialised cleaning agents nor complex equipment. Simple hand tools that can be found in almost every household - such as brushes, brooms or scrubbers - are sufficient to achieve initial cleaning success with this method. Although it is somewhat effective in removing superficial layers of dirt, it reaches its limits when it comes to deeper layers.


  • Cost efficiency: Uses everyday tools that are already available without additional expenses.
  • Environmentally friendly: Completely eliminates the use of chemical cleaning agents and saves water.


  • Limited depth effect: Effective only for superficial dirt such as moss or leaves; deeper deposits remain untouched.
  • Labor intensity: This method requires physical effort and is time-consuming, especially for larger areas.
  • Risk for surfaces: The use of abrasive tools can damage sensitive surfaces and should therefore be used with caution.

In summary, mechanical removal is primarily suitable as a preparatory measure for further cleaning steps. It is an environmentally friendly but labor-intensive option that can be used primarily for superficial dirt such as moss, leaves, environmental pollution, etc., but has its limits for comprehensive cleaning.

2. High-pressure cleaning: powerful cleaning with one jet

High-pressure cleaning is very popular as an efficient method for removing stubborn green deposits, algae and moss from outdoor surfaces. The targeted use of a high-pressure cleaner that sprays water under enormous pressure results in quick and thorough cleaning. This method can be carried out by yourself using a high-quality DIY high-pressure cleaner or left to professional service providers, although professional results are often even more striking.


  • Efficiency: Fast and thorough removal of a wide range of dirt.
  • Versatility: Can be used on a wide range of hard surfaces.
  • Chemical-free: Enables environmentally friendly cleaning without having to resort to chemical cleaning agents.


  • Water consumption: The use of high pressure results in increased water consumption.
  • Potential surface damage: Abrasive cleaning actions can cause damage to the surfaces, especially when used regularly, as they become increasingly porous and therefore susceptible to new deposits. A never-ending cycle.
  • Cleaning after cleaning: High-pressure cleaning generates significant amounts of dirt and mud that can contaminate not only the treated surfaces but also adjacent areas such as plants, windows and facades. So expect additional cleaning work.
  • Undesirable side effects: The flushing of paving joints is a common side effect that can hardly be avoided when using water pressure.
  • Costs: Professional high-pressure cleaning can be very expensive, especially for large areas. Even if you do it yourself, you will need to purchase a powerful machine.
  • Noise pollution: Operating a high-pressure cleaner can generate high levels of noise that may be disturbing in residential areas.

Pressure washing is undoubtedly effective for quickly cleaning outdoor areas. However, it does have some disadvantages. The surface becomes rougher over time due to pressure washing, which means that green growth and dirt return more quickly. This leads to a vicious circle: more pressure cleaning is required, which incurs costs and can damage the surface. In addition, adjacent components such as facades and flowerbeds can be soiled or even damaged by the cleaning action, which causes additional work and costs. These aspects should be taken into account when making a decision.

3. Home remedies: A cheap choice

Home remedies are often touted as an environmentally friendly and cost-effective solution for removing green deposits. If carefully selected and used, they can be a gentle alternative. However, their environmental compatibility is not guaranteed and depends heavily on the products chosen and their dosage.


  • Potential cost-effectiveness: Many home remedies rely on inexpensive and commonly available resources that are often already available in the home.
  • Easy to use: Mixing and applying household remedies is quick and easy.


  • Variable environmental impact: Depending on the agents used and their concentration, the effects on the environment can vary.
  • Limited effectiveness: In the case of thick or deeply penetrated plaque, home remedies reach their limits and often do not show the desired effectiveness.
  • Risk for sensitive surfaces: The use of natural acids and other aggressive substances, such as vinegar, requires caution as they can damage or discolor certain materials.

For a comprehensive and effective cleaning, it is recommended to use professional cleaning products that have been specially designed for safe and environmentally friendly use. zerogreen® products are an ideal choice in this context. They combine high efficiency with ecological responsibility and are suitable for a wide range of dirt, guarantee clean surfaces and help maintain the value of your outdoor areas.

4. Semi-professional cleaners: A simple but certainly not the best choice

Semi-professional cleaning products available in hardware stores appear to be a convenient option for removing green deposits, algae and moss. They position themselves as an interim solution for all those who want a more effective cleaning than with conventional household remedies, but do not want or cannot resort to professional products or services.


  • Accessibility: These resources are widely available and can be obtained easily and quickly.
  • Ease of use: Most are ready for use immediately with minimal or no preparation and are impressive due to their ease of use.


  • Inadequate product descriptions: Detailed instructions are often lacking, which can lead to disappointing cleaning results.
  • Not very effective: Highly effective cleaning products are rarely found in the range of hardware stores. Products there are often designed for maximum profit and have a low concentration of active ingredients. The promised cleaning result is usually not achieved.
  • Costs: Compared to simple home remedies, the costs for semi-professional solutions can increase considerably, especially for larger projects.
  • Need for protective measures: The use of chemical cleaners requires appropriate precautions to minimize health risks.

To ensure effective and safe cleaning, carefully consider the options available. It is advisable not only to pay attention to the price, but also to consider the long-term effects and potential damage to surfaces. In most cases, it can be wise to use specialised, professional cleaning products to achieve the desired results and avoid expensive follow-up costs. Because, as the saying goes, if you buy cheap, you buy twice.

5. Professional cleaning products: The superior solution for spotless outdoor areas

For the effective removal of stubborn green deposits, algae and moss, professional cleaning products such as those offered by zerogreen® offer an unrivalled solution. These products are not only characterized by their exceptional cleaning power, but have also been developed with environmental compatibility and safety in mind.


  • Highly effective: Specially developed formulations efficiently remove even the most stubborn deposits.
  • Protects surfaces: These cleaning agents are designed to clean and preserve the treated surfaces without leaving any abrasive damage.
  • Long-term results and protection: In addition to the immediate cleaning effect, these products often also offer long-lasting protection that minimizes the formation of new deposits.
  • Clear, understandable instructions: Each product comes with detailed application guidelines to ensure optimal results.
  • Environmental and user-friendliness: Many professional solutions are designed to have minimal environmental impact and are safe to use.
  • Time and cost efficiency: The highly concentrated formulas are dilutable and offer high coverage, saving time and money in the long term.


  • Availability: While they may not be found in local stores, professional products are conveniently available through online stores or specialty retailers.
  • Cost: The initial investment may be higher, but reflects the superior performance and yield of the products.
  • Need for protective measures: For safe use, personal protective equipment may be required to avoid skin and eye contact.

Professional cleaning products from zerogreen® are the optimal choice for anyone who not only wants to thoroughly clean their outdoor areas, but also wants to ensure that they retain their value and long-term beauty. Choosing such professional solutions is an investment in efficiency, environmental protection and lasting satisfaction.

Additional tip: Long-lasting protection for your outdoor areas

After successfully removing green deposits, it is crucial to take preventive measures to minimize new growth and maintain the cleanliness of your outdoor areas in the long term. There are two effective options here:

1. Green algae remover with long-term protection:

Our green growth remover from zerogreen® was specially developed to provide long-lasting protection against green growth. After cleaning your surfaces, it can also be used as a subsequent treatment. It effectively prevents the formation of green growth again and ensures permanently clean surfaces.

  • Advantages of the green algae remover with long-term protection:
    • Annual prophylactic application possible to keep green deposits away.
    • Also actively cleans dirty surfaces, but the result is not immediately visible as the effect is released over time.
    • Long-lasting protection that extends the life of treated surfaces.
    • Environmentally friendly formula that ensures safety of use and protects the environment.

2. Nano-impregnation:

Alternatively, nano-impregnation offers a solution that protects your surfaces and effectively repels moisture. This protective film not only helps against green deposits, but also against various other types of dirt, such as grease stains.

  • Advantages of nano-impregnation:
    • Water and dirt repellent effect that facilitates cleaning and reduces the frequency of necessary cleaning measures.
    • Long-lasting protection for the treated surfaces.
    • Environmentally friendly formula that ensures safety of use and protects the environment.

The choice between these two options depends on your individual needs and preferences. Both offer an environmentally conscious solution to ensure the long-term cleanliness and attractiveness of your outdoor areas and support sustainable management of your property.

Choosing the right method for removing green algae

Removing green growth from outdoor stone and paving surfaces is crucial to ensuring the aesthetics, safety and longevity of your property. Each of the green growth removal methods presented has its own advantages and disadvantages that should be carefully considered.

  • Mechanical removal: A cost-effective and environmentally friendly method, but limited in effectiveness and time-consuming.

  • High-pressure cleaning: Efficient and thorough, but requires more water consumption and can damage the surface.

  • Semi-professional cleaners: Conveniently available, but often with limited effectiveness and inadequate product descriptions.

  • Professional cleaners: The most effective option for thorough results, especially when they are specifically designed. We recommend zerogreen® Green Growth Remover Turbo and Green Growth Remover with Long-Term Protection as they actively remove green growth and provide long-term protection.

Our recommended approach to keep your outdoor areas clean and protected for a long time is to use zerogreen® Green Growth Remover Turbo and Green Growth Remover with Long-term Protection. These products offer efficient solutions to remove green growth and prevent it from reappearing and can be used in combination.

In any case, it is advisable to perform a test cleaning before using any method and to carefully follow the manufacturer's instructions to obtain the best results.

We hope that this article has helped you choose the right method for removing green algae and helps you restore your outdoor surfaces to their former glory.