Preventing/Ridding Moss Roof Growth
Preventing/Ridding Moss Roof Growth
Moss can form on the roof due to many reasons. Even though moss mainly forms in wet seasons, there are a number of factors that can lead to its growth even in warm climates. Moss can substantially damage most types of roofs. There are many ways to prevent the growth of moss on the roof. Trees and vines that hang over the roof can prevent it from drying quickly and completely, thus encouraging the formation of moss. Regularly trim trees and vines that keep any part of the roof in the shade for long periods of time. Trim the vegetation just enough so that there is some light and enough movement of air on the roof. Any material that holds moisture such as leaves, twigs and pine needles will also encourage the growth of moss. Therefore, clear the roof regularly of any leaves or debris. Make sure there is enough ventilation to allow movement of air on the inside of the roof. This will help the roof dry out faster and prevent the moisture from forming for any long periods of time. A zinc or copper strip placed under the edge of the ridge cap will release chemicals in small amounts that will prevent or stop the growth of moss as well as algae. It is important to use these very carefully as they can be toxic in large quantities.
If the moss or algae has already formed, there are some ways to get rid of it. High pressure water spray may get rid of the moss, but it has the potential to damage and loosen shingles or siding. Chemicals containing sulfur and iron can be used to kill moss. However, these chemicals can be toxic and potentially harmful to the plant and animal life. Diluted solution of bleach mixed with some detergent can also be applied to get rid of moss from the roof.
The best practice for your roof is to prevent creating conditions where moss & algae growth strive. If left unattended, the moss & algae damage to your roof can prove to be extensive. While you may be able to get rid of the moss yourself, it is recommended that you hire a professional roofing contractor to remove the moss/algae.
