Flat roofs are fairly popular on structures including extensions and garages because they are relatively cheap. In general, a well-installed flat roof should last at least 15 years, but most can do a lot longer than this, depending on a few factors, so let’s take a look at this in more detail.
Lifespan by material type
Of course, what your flat roof is made out of makes a massive difference. A classic felt roof can actually last between 15 and 20 years, and modern high-performance felt can extend this timeframe even more if it’s installed properly.
A newer kind of material, EPDM rubber, is known for its durability. Because it can be fitted in large sheets, it reduces the risk of water getting into joints and can last an incredible 40 years or more in good conditions.
Fibreglass roofs also typically offer a lifespan of around 25 to 30 years.
A striking alternative is green roofs, where vegetation sits above a waterproof layer. The planting helps shield the membrane from direct sunlight and temperature extremes.
Factors that affect durability
Installation quality plays a major role in how long your flat roof is going to last. If the fitting has poor detailing around edges and drainage outlets, the lifespan is really affected. If there are signs of cracking or persistent leaks, get advice from experienced local professionals, like roofers Chichester for example, such as www.randsroofing.co.uk/roofing-services/roofers-chichester/.
And so you can get a lot of mileage out of your flat roof. Its lifespan really depends on material choice, workmanship and maintenance.