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Understanding Algae-Free Roofs

Nov 5, 2024

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Fasto Roofing explains the necessity and benefits of algae-free roofing, especially in climates with unexpected weather changes and high humidity.



Why Algae-Free Roofing Is Needed

The Problem with Algae

  • Appearance: Algae, officially known as Gloeocapsa Magma, causes dark, ugly streaks on roofs, affecting the curb appeal.

  • Damage: Algae eats away at shingles, weakening them and inviting further damage from fungi, mildew, and mold.


Benefits of Algae-Free Roofing

  • Maintains Appearance: Keeps the original color of your shingles, enhancing curb appeal.

  • Energy Efficiency: Prevents algae from blocking the reflectiveness of shingles, reducing energy costs.

  • Prevents Moss Growth: Stops roots from spreading under shingles, preventing water penetration and further roof damage.


The Impact of Algae on Roofs

Algae vs. Mold

  • Algae: A plant-like organism that feeds on limestone in shingles.

  • Mold: A fungus that requires nutrients, often derived from algae, to grow.


Growth Conditions

  • Ideal Conditions: Heat, moisture, and nutrients (limestone in shingles) promote algae growth.

  • Airborne Spores: Algae spreads through airborne spores, thriving in shaded and humid environments.