If you are at this point you have hopefully read through our recommendations on how to check out your existing roof and prepare it to receive a new roof and checked out the 10+ year section. Instead of repeating the 10+ year section this section builds upon it. What extra things are required to get a 20 to 30 year roof? The combination of design, materials, workmanship and timely maintenance makes just about anything last longer. This is especially true for roofing. If any of these items is poor the roof is likely to fail before 10 years. If all of these items are good we would expect any roofing system installed today to last for 20 years. After being so generic, what follows will attempt to be specific on how to obtain the best design, materials and workmanship. It will also touch on some different roofing systems and the details manufacturers require to get their longer warranties.