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.