Algae and moss are somewhat common issues with the majority of asphalt roofs on residential properties. Unfortunately, they are extremely common. Not only are algae and moss unsightly, they can also cause damage to your roof if they aren’t removed. This is why it is so important to take some time to clean your roof regularly, which can help you prevent algae or moss from appearing to begin with.

Learn more about algae and moss growth on your roof here.

What Causes Algae and Moss to Grow?

Algae and moss grow when it’s humid outside. These issues typically appear in cooler, shaded areas of the roof. You will recognize that moss is growing because it will look like furry green spots on the surface of your roof. Algae on the other hand looks like dark streaks.

These are both common problems but can be prevented. You can also take care of the problems when they occur by washing the surface of your roof when they are noticed. In any situation, it’s crucial to address the growth of algae or moss on your roof right away. If you don’t it can lead to more serious problems.

Because algae and moss both like wet, moist climates, they are both a sign of excessive water. If the moss or algae is allowed to stay, it can cause your sub-roof to rot, cause damage to your shingles, or even larger-scale water damage that can be hard to take care of. The good news is, you can prevent algae and moss. A few tips to help you do this can be found here.

Preventing the Growth of Moss and Algae    

Moss will take root and thrive in dark areas where it is cool and where water can collect. In most cases, trees are to blame for the growth of moss. If there are limbs hanging over your roof, they will start to drip water on the roof after it rains. To add to the problem, the limbs also shade the surface of your roof. This will make the ideal environment for the growth of moss. To prevent this issue, consider taking branches that are hanging over the top of your roof down or you can even cut the tree down completely.

Algae is much harder to prevent than moss. However, there are some manufacturers that are taking steps by offering copper composite shingles. Even though these cost more, they have copper particulate in them, which prevents algae.

Another option to get rid of algae is to attach metal strips on each side of your roof. The best location is directly below the ridge.

As you can see, preventing moss and algae isn’t impossible, but you do have to put in a bit of time and effort to ensure it doesn’t affect your roof. If you do notice algae or moss, be sure to call the professionals right away before the material has time to cause even more damage or issues.