Unlike our competitors' "algae-resistant" shingles, Atlas shingles featuring Scotchgard™ Protector contain a minimum 10% blend of 3M copper-containing granules that prevent unsightly algae stains on a roof.

In this special edition of Hammer Time With Paul, we show you why Atlas StormMaster® Shake, StormMaster® Slate, Pinnacle® Pristine and Legend® shingle lines carry a true lifetime warranty against the ugly black streaks caused by algae.