Lowe’s works with licensed, insured and background-checked independent installers from your local community. Our roofing installation service comes with a standard two-year labor warranty. Your professional installation always includes all accessories and product needed to complete the job. Decking, underlayment, ice barrier, flashing and drip edge, shingles, starter roll, hip and ridge shingles, and ventilation products are all discussed upfront during the consultation. The answer varies widely depending on the roofing repairs company chosen , but most companies guarantee their work for at least 10 to 25 years.