How to Prevent Algae and Moss Growth

All homeowners will do their best to keep their roofing system as beautiful and efficient for as long as they can. This includes preventing the growth of moss and algae on the roof’s surface. As such, it’s important to know what causes these black spots to spread all over your roof. In today’s blog, the top expert on seasonal roof jobs and moss removal, US Roofing, shares tips to prevent algae and moss growth.

What Causes Algae and Moss Growth?

Many homeowners tend to panic when they see algae or moss streaks on their roof, often mistaking it for mold or mildew growth. These black streaks are actually algae. Algae forms due to rich moisture present in humid climates, making it a great environment for algae to thrive in.

The most common strain of algae or moss is called gloeocapsa magma or blue green algae. The color of the algae is meant to protect it from harsh sunlight by creating a dark, pigmented sheath. Your residential roofing contractor will tell you that algae growth will start as small spots, then will grow into streaks on your shingles if left alone. If you see streaks, this means that algae has been present on your roof for months on end.

Moss and Algae Prevention Tips

Here are some tips provided by roofing professionals to stop algae and moss growth:

• Control Air Flow. It’s a good practice to redirect airflow down your roofing slope to prevent debris infiltrating the gaps of your shingles. This debris could cause algae and moss growth in the long run.

• Regularly Trim Tree Branches. Make sure that you regularly trim back tree branches that are overhanging your roof to allow more sunlight to hit your roof to kill the algae and moss. It’s also important to sweep off debris and dirt from your roof as these can contain contaminants that will cause algae and moss growth.

US Roofing is not only your go-to company for residential and commercial roofing. We can also manage all of your roofing needs, from professional inspections to emergency repairs. We proudly serve Peabody, MA, and the surrounding areas. Call us today at (978) 532-6300 or fill out this contact form to schedule your roof evaluation.