Black Streaks Caused By Algae On Your Roof May Affect Your Home's Value
A quick look around your neighborhood may reveal roofs that look old and dirty. In reality, those roofs might not be old - or dirty. They may be covered with black streaks caused by algae - organisms that live on the roof's surface. The algae causes black streaks on the shingles, masking the roof's original color. A roof can make up to 50% of a home's exterior and is a key factor in its curb appeal. Black streaks on shingles can hurt the overall appearance of the house.
Copper Fights Black Streaks
Atlas shingles featuring Scotchgard™ Protector have:
- Copper-containing granules with a proprietary 3M™ porous ceramic coating that allow copper ions to release slowly over time.
- A minimum 10% blend of evenly distributed 3M™ Copper Granules among standard colored granules.
- Third-party verification of the 3M™ copper granule application.
- An Atlas Lifetime* Algae Resistance Limited Warranty against black streaks caused by algae.
10% or more 3M™ copper-containing granules = resistance against the black streaks caused by algae.
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*Refer to the Atlas Roofing Limited Shingle Warranty for all coverage requirements
?Helps resist the black streaks casued by algae.