Since precipitation collects on flat roofs, moss is possible on such surfaces. In addition to providing moisture, there are also shaded areas, making them ideal growing conditions for moss. Read on to learn more about how to remove moss from a flat roof!
Is moss on flat roofs harmful?
As the moss grows and the surface expands and contracts in response to climatic changes, it can damage the coating by creating tiny defects and opening the door to water penetration. If clumps of moss come loose, they canroll into the gutters and clog them. Even more crucially, many roof coatings develop small dents and marks as they age. For these reasons, it is important to keep moss and lichens away from roofing.
So is moss on flat roofs good or bad? In small quantities it is harmless. However, this green covering can lead to problems with flat roof drainage!
Removing moss from a flat roof – methods and means
There are countless sizes, shapes and materials for flat roofs. Bitumen sheets, asphalt shingles, roofing felt, etc. are all susceptible to moss formation. Because the coating provides the moss with the ideal growing conditions - shade and moisture - the moss develops quickly on bitumen roofs. The moss spores can accumulate and thrive on the garage roof, for example.
Use bleach
Bleach, a bucket, a brush, and a sprayer are all you need to treat a flat roof. It's that simple.
Note the following:It may not be safe to walk on a flat roof, especially if it is an older roof. Therefore, you should either call in a roofer or use our telescopic brooms and spray lances to reach the ground or edge of the roof and get the job done.
The first of two methods for eliminating moss is to mix bleach with water. First, use a broom or brush to remove large clumps of moss. The moss will turn dark within minutes if you spray it with bleach after watering the roof. Rinse the area with water and check again after a few minutes. To remove all moss, repeat the process. Remove any standing water or dead moss with a brush.
Mechanical removal
The safest option for the environment is mechanical cleaning, which does not use chemicals. Anyone who invests additional work now will protect the roof and the planet in the long term.
Important:It is recommended to avoid the use of biocides. They pollute the air and can enter underground water sources.
A good way to remove moss from a flat roof is to use a grout brush or other hard-bristled brush. You can spray the moss with a mixture of soap and water. Begin scrubbing the roof with the brush - vigorous scrubbing will remove the moss from the roots and make it impossible for it to grow again. After brushing the roof, gently spray it with water to make sure all the moss is gone. Now is also a good time to make sure the roof is free of any damage caused by moss or water buildup.
Also interesting:How can you clean a patio cover? How to keep outdoor surfaces clean!
Clean flat roof regularly
- Remove any dirt
Thoroughly sweep the flat roof free of dirt and debris using a long-handled broom. Branches, twigs or fallen leaves can be found here. Because it presses on the roof structure and collects water near the coating, it can cause cracks and leaks if left unchecked.
- Pick up fallen leaves
Remove fallen leaves from the roof with a leaf blower or long-handled broom. Again, as leaves accumulate, they can add weight to the roof and increase the susceptibility to leaks as moisture pushes against the roofing material.
- Trim back trees and branches that lean over structures
It is recommended that neighboring trees be trimmed to minimize the risk of injury from falling branches, leaves and twigs.
- Keep drains clear
Keeping them in good condition will reduce the chance of water pooling around your flat roofs, which can lead to pooling and leaks.
Also read:Remove moss from the roof: With these remedies you can get rid of moss and lichens in a flash!
Titelbild: Olga Save/ Shutterstock
