Moss and lichen growth on your roof can not only be unsightly but also cause damage to your roof by retaining moisture that can lead to rot and deterioration. In this article, we’ll explore how you can prevent moss and lichen growth on your Australian roof.
What Is Moss?
Moss is a small green plant that grows in damp and shady places. It’s most commonly found on roofs, fences, trees, walls and other outdoor surfaces. Moss can cause damage to your roof by trapping moisture which can rot the wood or corrode metal surfaces. In addition, moss can clog gutters and downpipes, and make your roof more slippery in wet weather.
What Is Lichen?
Lichen is a combination of algae and fungus that grows on rocks, trees, roofs and other surfaces. It’s usually grey or green in colour and forms a crusty covering over the surface it’s growing on. Lichen can cause damage to your roof by trapping moisture which can rot wood or corrode metal surfaces. In addition, lichen can make your roof more slippery in wet weather.
What Causes Moss and Lichen Growth on Roofs?
Moss and lichen growth on roofs is common in areas with high humidity and rainfall. In Australia, moss and lichen growth are particularly common in coastal regions. Moss and lichen grow on roofs when spores land on the surface and find enough moisture and nutrients to thrive. Shady areas of the roof, such as under trees or near chimneys, are more likely to develop moss and lichen growth.
Another cause of moss and lichen growth on roofs is poor roof ventilation. Poor ventilation allows moisture to accumulate on the roof, providing an ideal environment for moss and lichen to thrive.
How to Prevent Moss and Lichen Growth on Roofs
Keep Your Roof Clean
One of the most effective ways to prevent moss and lichen growth on your roof is to keep it clean. Regularly remove debris, such as leaves or branches, from the roof before they have a chance to accumulate. This will help reduce the amount of moisture that collects on the roof, which can prevent moss and lichen from growing.
Trim Trees and Shrubs
Trees and shrubs that overhang your roof can provide shade and moisture, creating the perfect environment for moss and lichen growth. Trim tree branches and shrubs that are touching or close to the roof to reduce the amount of shade and moisture on the roof.
Install Zinc Strips
Zinc strips can be installed along the edges of your roof to help prevent moss and lichen growth. The zinc molecules will be released and run down the roof surface, inhibiting moss and lichen growth. However, it’s important to note that zinc strips are not a long-term solution and may need to be replaced after a few years.
Keep Your Gutters Clean
Clogged gutters can lead to water pooling on your roof, providing the perfect environment for moss and lichen to grow. Ensure that your gutters are regularly cleaned to prevent this from happening.
There are several gutter cleaning tips you should follow to help keep the job safe and efficient. They include:
- Do so regularly: You should clean your gutters at least twice a year, ideally in the fall and spring.
- Have the tools ready: Have all the necessary tools – such as a ladder, gloves, bucket and hosepipe – on hand before starting any work.
- Be careful: Take extra care when cleaning tall or steep roofs to avoid slipping or falling.
Apply a Moss and Lichen Treatment
There are several chemical treatments available to prevent moss and lichen growth on roofs. These treatments are typically applied to the roof surface and left to dry. Over time, the chemicals will kill any moss or lichen spores, preventing them from growing on your roof.
In conclusion, moss and lichen growth on your Australian roof can be prevented through several measures, including regular cleaning, trimming trees and shrubs, installing zinc strips, keeping gutters clean, and applying a moss and lichen treatment. By taking these steps, you can protect your roof from damage and keep it looking great for years to come.