The short answer to this question is, it depends … There are a lot of factors that go into just how long an asphalt roof can last, so in addition to providing some longevity ranges based on asphalt roofing type, let’s also take a look at some of the major factors you’ll want to be aware of before you make any decisions on a new roofing system. THE AVERAGE LIFESPAN Looking at the category broadly, asphalt roofing can last anywhere between 15 to 50 years depending on many factors, which we’ll cover shortly. That said, here is an overview of three different types of asphalt roofing, and how long each is expected to last. We’re using GAF asphalt roofing lifespans in our examples here, as they are a very popular choice in Dane County, as well as throughout the country  … Note: Click on a shingle to enlarge. GAF THREE-TAB SHINGLES GAF’s entry-level Royal Sovereign line of shingles are the most affordable type of asphalt shingle in the GAF lineup. Although they’re considered to be