Packaged at 21 strips per bundle, each Armour Starter strip is made using our own quality raw materials to ensure optimum roofing quality, and is compatible with all existing IKO Armourshake shingles. Special algae-inhibiting granules have been added to provide long-lasting algae resistance. Armourstarter is produced in a complete range of color blends to match the Armourshake line. Installation information is printed on the package with easy-to-follow instructions. Conveniently packaged in easy-to-carry lightweight bundles.