Algae warranty coverage is available in all GAF warranties covering shingles and accessories. All StainGuard Plus Pro-labeled shingles carry a 30-year limited warranty and 10-year non prorated period against blue-green algae discoloration. All StainGuard Plus-labeled shingles, ridge cap shingles and StarterMatch starter strip shingles carry a 25-year limited warranty and 10-year non-prorated period against algae discoloration caused by blue-green algae. All StainGuard-labeled shingles carry a 10-year limited warranty and 1-year non-prorated period. There is no coverage for algae discoloration for any other GAF Accessory Products. Your StainGuard Plus and StainGuard Plus PRO-labeled shingles, ridge cap shingles and starter strips may be eligible for a 15-year non-prorated period if you purchase an enhanced warranty through a GAF certified-contractor. The remedy provided in the event of a claim is the reasonable cost of commercially cleaning your shingles, ridge cap shingles, or StarterMatch starter strip shingles, or at GAF’s sole option, replacing the discolored shingles, ridge cap shingles, or StarterMatch starter strip shingles. See applicable warranty for complete coverage and restrictions.