certainteed shingles 12 yearsMany of our roofs in Glenmore Woods were done using the CertainTeed Corporation Classic Horizon Shangle shingles. The photograph is a less than 12 year old roof, where many of our roofs are in need of replacing after only 12 years or earlier. The Classic Horizon Shangle shingle comes with a 30 year limited warranty. For more details about submitting a warranty claim, visit www.ctroof.com or call (800) 345-1145.