Unfortunately, that is not true. The manufacturer’s warranty is a bit deceiving. The 30 year manufacturer warranty (or 25, 40, or lifetime) is against manufacturer’s defects. Most new roof systems are designed to provide useful services ranging from 15, 20 even 25 years. Some roof system types such as slate and metal systems can last longer.
Actual roof system life span is determined by a number of factors, including local climactic and environmental conditions, proper building and roof system design, quality and suitability, proper application and adequate roof maintenance. Therefore, a 30 year shingle will most likely not last 30 years. We have seen 30 year shingles need to be replaced after 10 years due to severe climactic and environmental conditions. Roofing product manufacturers offer a variety of warranties on their products. Take a close look at those warranties to see what responsibilities and financial obligations manufacturers will assume if their products fail to reach their expected lives.