Algae is common on roofs. It doesn’t cause major structural problems, but it may stain the shingles and can remove the granules that reflect UV rays, which can lead to premature wear. It’s usually easier to prevent algae growth than to remove it, so use these tips to help protect your roof shingles from algae. 

3 Tips for Keeping Algae Off Roof Shingles

1. Remove Debris

Debris, like leaves and sticks, doesn’t just transfer algae and bacteria; it can also trap water on your roof. Since algae need water to grow, limiting standing water on your roof can prevent it from forming. If you ever notice sticks or other debris on your roof, use a blower to remove it or have a professional roofer safely clear the surface. Additionally, clean your gutters at least twice per year to clear the way for rainwater to filter away from the roof. 

2. Trim Trees

Algae start as microscopic spores that gradually grow into visible green or brown blooms. The original spores often transfer to roofs from nearby trees, so trim any branches that hang over your roofline to limit exposure. This can also prevent large branches from damaging your roof during storms or clogging your gutters when leaves fall. 

3. Install Attic Ventilation

Humidity is another way moisture can contribute to algae growth on roofs. When hot air is trapped inside, humidity from the exterior can condense into water droplets on the roof. Vents between the roofline and the attic will allow air to flow more freely between the interior and exterior, which limits the temperature difference and prevents humidity from feeding algae spores on your roof. 

If you need repairs or maintenance to help with algae on your roof shingles, contact Pyramid Roofing in Grandview, MO. The roofing contractor offers a wide array of services, from quick repairs to full replacements. They have installed more than 35,000 roofs across the Kansas City area since 1992, using quality materials from top brands like GAF® and CertainTeed®. Visit the website or call (816) 966-1101 to request a free estimate.