How Long Should A Bitumen Roof Last

How quickly and frequently asphalt shingles have to be replaced depends on the style of shingle chosen location and the severity of storm damage they sustain.

How long should a bitumen roof last.

But how can this be you say. Regardless of how the material is applied self adhesive sheets hot mopped asphalt or cold applied adhesives the seams are usually melted together which help stop leaks. A ribbed metal panel roofing system featuring concealed fasteners will offer a longer lifespan ranging from 30 to 50 years depending on the environment. If your roof is made out of copper or aluminum performance of more than 75 years is not uncommon.

Modified bitumen roofs are reputed to last anywhere from between twelve to twenty years. Of course roof longevity is in no small part based upon the climate of the prevailing area and the amount of wear and tear that occurs over the course of the years. Here is what you should know about the lifespan and performance of asphalt shingles. Bitumen roofs are one of the longer lasting types of flat roofing materials easily lasting 20 years or more.

Cleaning and maintenance can also play a role. Modified bitumen roofing materials choices costs life expectancy characteristics examples of defects in modified bitumen roofs. With proper installation you can expect a 25 to 40 years lifespan from a ribbed metal roof with exposed fasteners. 25 year roofs lasting 9 12 years on average.

Other factors that can influence how long an asphalt roof lasts include the roofing underlayment ventilation and quality of installation. Just because a roof is classified as a flat roof that is a roof with a slope of less the 2 12 does not mean it is a modified bitumen roof. The average expected life of a metal roof is between 30 and 50 years although a well maintained metal roof may last longer than 50 years. On average asphalt shingles can be expected to last less than 20 years depending on where you live and the type of weather that your roof is regularly exposed to.

What affects their lifespan and causes damage. Typically a 30 year roof will last on average 12 15 years in more extreme climates such as we have here in texas. Our photographs of modified bitumen roofing shown below indicate three conditions found on a small walk out balcony on a 1935 poughkeepsie new york home that had been re roofed in the prior year. The more premium designed asphalt shingles can last up to 50 years.

While many types of roofs last longer than 15 years some can hold up well for 50 years or longer barring a serious storm or a large fallen tree.