The Flexibility behind Core4® Shingles
The FlexCore® Technology built into Atlas shingles with Core4® Polymer Modified Technology allows shingles to bend when others tear and crack.
Because of their superior flexibility, shingles with Core4® exceed the industry's standard tear-strength requirement by 45 percent — even in cold-weather installations. Their pliability also means they lay flatter and seal more effectively.

Core4® is available only on StormMaster® Shake shingles.
Watch the video to see how FlexCore® Technology provides superior flexibility in all weather conditions.
For more information, visit AtlasRoofing.com/Core4.