Moss and algae can leave unsightly black streaks on your roof. These can become eyesores and contribute to water damage, so take steps to prevent them from appearing. This guide contains everything you need to know to keep your roof in top shape.

Why Moss Grows on Shingles

Moss develops in moist, shaded areas. This flowerless plant grows in patches, and while these may be beautiful in nature, they can create problems on a roof.

They tend to first appear between shingles, where moisture can sit between pieces. As the plants expand, they can pry shingles from the decking. Eventually, this creates holes that allow rainwater to leak into your attic, damaging insulation and wooden surfaces. These organisms also affect the visual appeal of your home exterior, creating stains on your roof.

How to Prevent Moss Development on Roofing

Once moss appears, you can remove it using a mixture of chlorine bleach and water. Simply spritz the mixture onto the area and the growth naturally falls off after some time. You can substitute the bleach with vinegar. However, avoid using power-washers, which can loosen the shingles.

To prevent future growth, eliminate the growing conditions for the organisms. Trim back overhanging branches that create shady spots on your roof, then remove all leaves and debris from the gutters, which allow moisture to accumulate. Clean the gutters every spring and fall to maintain your roofing.

If you still have concerns about future problems, have a roofing contractor install zinc strips to the ridge caps. Rainwater activates these products, washing the roof in zinc to prevent plant growth.

Annual roof inspections are also essential for preventing roofing problems, so contact Action Roofing Services if you’re overdue. Based in Anchorage, AK, this roofing contractor provides comprehensive services to residential clients, including roof repairs and maintenance. Visit their website to learn more about their work, and call (907) 677-6969 to schedule a consultation.