Cleaning roof tiles: Tips and tricks for proper roof cleaning
Cleaning roof tiles plays a crucial role in maintaining and preserving the value of a house. Cleaning roof tiles not only improves the appearance of the house, but also promotes the longevity of the roof. In this article, we will look at various aspects of roof cleaning, including why it is important, which methods are suitable for cleaning, when you should call in a professional, and how to effectively prevent moss, lichen and algae.
Table of contents
Tips and tricks for cleaning roof tiles
Regular cleaning of the roof tiles
Regular cleaning of the roof tiles is crucial to remove dirt and vegetation and keep the roof in good condition. Moss and lichen can be effectively removed with a root brush or high-pressure cleaner. It is advisable to work from top to bottom and spread the cleaning agent generously over the roof. We recommend having the cleaning carried out by a specialist to avoid possible damage and to ensure the necessary safety precautions.
Why is cleaning the roof important?
Prevention of moss and lichens
Moss and lichens on the roof are not only an aesthetic problem, but can also damage the roof tiles in the long term. These organisms can store moisture, which can lead to frost damage, especially in the colder months. The effect of this moisture causes cracks and fractures in the roof tile material, be it clay or concrete, which impairs its functionality. Regular cleaning of the roof tiles helps to prevent the growth of moss and lichen and thus significantly extend the service life of the roof tiles. It is important to work from top to bottom when cleaning to ensure that the rainwater effectively drains away dirt and spores.
Protection against damage
Cleaning roof tiles not only serves to maintain the appearance of the house, but also to protect the roof tiles from damage. Due to environmental influences such as rain, wind, snow and sunlight, roof tiles become porous and susceptible to soiling over time. Moisture that settles in the pores can lead to cracks and breakage when it freezes. In addition, the constant build-up of dirt, algae and lichen can attack the surface of the tiles and weaken the integrity of the material. Thorough cleaning removes these harmful deposits and can therefore help to avoid expensive repair or even replacement work in the future.
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Which methods are suitable for cleaning roof tiles?
Optimal use of high-pressure cleaners
Using a pressure washer can be an effective method of removing dirt, moss and lichen from roof tiles. However, make sure to check the condition of the tiles before use, as older or porous tiles can be damaged by the pressure. If you are unsure, we recommend consulting a specialist. A high-pressure cleaner with hot water function can effectively remove stubborn fouling in particular. However, it is important to use the pressure washer correctly to avoid damaging the tiles. Work with a high-pressure cleaner should always be carried out from top to bottom to prevent water from being forced under the tiles. The water pressure should also be carefully adjusted, especially with older or damaged roof tiles, to prevent further damage .
Chemical cleaning agents vs. natural methods
When choosing cleaning agents for roof tiles, many homeowners ask themselves whether chemical cleaners or natural methods are preferable. Chemical cleaning agents are often powerful and can provide quick and effective cleaning. However, aggressive chemicals can attack the surface of the roof tiles and damage the environment and health if used incorrectly .
As a household remedy, you can apply white vinegar or concentrated vinegar cleaner to the overgrown areas and leave to work. The vinegar attacks the moss growth so that the roof tiles can then be cleaned with a high-pressure cleaner. However, this only works with light moss on the roof.
However, chemical cleaners are not necessary at all. Our BIOSATIVA® concentrate is completely biodegradable. When used correctly, the cleaner is harmless to the environment, humans and animals. To do this, mix the concentrate as indicated in the mixing table, apply it to the surface and allow it to work in well. You can then spray the tiles with a high-pressure cleaner. If the pressure washer has a compartment for cleaning agents, you can also fill in the cleaning mixture. For the exact application and safety instructions, please visit the product page.
Prevent moss, lichen and algae: roof sealing
To combat moss, lichen and algae in the long term, our roof sealing with long-term and deep action is an effective measure. This protective coating ensures that no new dirt can adhere to the roof tiles or be washed off with a little water.
The right sealant is crucial for long-lasting protection of the roof. If you do not have any “normal” roof tiles, we recommend that you use our product finder or contact our support team.
Cleaning roof tiles yourself or should you hire a professional?
You can clean the roof tiles yourself if you have the technical know-how. The right safety equipment and accessories are essential for this. However, the roof tiles should be cleaned regularly. Professional intervention can be helpful here, as an inspection can be carried out over the entire roof at the same time. This means that the roof is serviced and cleaned directly.
The advantages of a professional lie in his experience and the special cleaning agents he uses. By using high-pressure cleaners and targeted cleaning agents, the professional can clean the roof efficiently without damaging it. In addition, the risk of working on the roof during cleaning is minimized as the professional has the appropriate safety equipment.
Frequently asked questions about cleaning roof tiles
Roof tiles should be cleaned regularly to remove accumulations of moss, algae and other soiling. Experts recommend cleaning every 2 to 5 years, depending on the location of the building and its direct exposure to the elements.
Regular cleaning of the roof has several advantages. It prevents the accumulation of moss, algae and leaves, which can block water drainage and lead to moisture problems and frost damage. A clean roof surface allows rainwater to run off better, reduces the risk of water damage and increases the service life of the roof tiles.
Sealing the roof tiles after cleaning can extend the service life of the roof tiles and delay the re-growth of moss and algae. However, it is not always necessary and depends on the type of roof tile (e.g. clay roof tiles may be more likely to need sealing) and its condition. It is important to follow the manufacturer’s instructions and consult a specialist if necessary.
To prevent water from getting under the roof tiles, cleaning work should be carried out with care and taking the roof pitch into account. Avoid using high-pressure cleaners directly on or under the roof tiles. Make sure that gutters and downpipes are free of blockages to ensure efficient drainage of rainwater. Regular inspections and maintenance work also help to prevent water ingress.
When working on the roof, appropriate safety precautions must be taken to avoid accidents. This includes the use of safety shoes with a good grip, the use of safety harnesses and safety ropes, the construction of stable scaffolding and the avoidance of work in poor weather conditions. Always inform someone about the work you are carrying out and avoid working alone on the roof
Yes, incorrect cleaning methods, e.g. using too high a pressure during high-pressure cleaning, can lead to damage or cracks in the roof tiles. It is important to choose gentle cleaning methods or contact a specialist company to minimize the risk of damage.