Roofing & Algae Tips: FAQ on Staining on Shingled Roofs - GAF-ELK Message
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What do the Black Stains on my Roof Mean? | Those are Algae stains. It prominently appear on the lower sections of the roof as dark spot as and dissipate as you get closer to the ridge of the roof. |
What is the Cause of the Algae on the Roof? | Algae is prominently spread from one roof to another by spores randomly landing from neighboring infected roofs. The Algae protects itself from UV sunrays by creating the dark colored layer. |
How does the algae grow? | Moister in the air is primary of nutrients for Algae, Algae grows in areas with high levels of moister in the air. Additionally, will concentrate in the northern part of a home since it receives the least amount of sunlight. Algae is versatile and adopts well to extreme conditions. |
What Solutions Do I have? | Install Algae Resistant Roof such as GAF-Elk's. These roofs' shingles exhibit algae fighting formulated granules that will keep your house looking new. |
What Not to do? | A common mistake homeowners make is power washing the Algae away. Power washing your roof may damage your granules which lead to premature roof failure |
What GAF-ELK Shingles Can I use? | GAF-ELK Designer Lifetime Shingles have StainGuard Protection nationwide (all except Grand Sequoia). |
