Fibreglass Flat Roof Lifespan

How long does a flat roof last most modern flat roofs have a lifespan of 20 years or more so that means if you were to live in a house for 60 years you would only have to replace it two or three times before you die of old age.

Fibreglass flat roof lifespan.

Even though this is a normal thing within the lifespan of fibreglass roofs. Grp resin catalyst hardener fibreglass mating and a top coat resin are the essentials of a grp roofing system along with the fibreglass roof trims and flashing. Most traditional flat roofs are made from either mineral felt or asphalt and will have a maximum life span of between ten and 15 years. However when it reaches that age it can lose its elasticity causing it to look cracked and wrinkled like the skin of an alligator hence the term.

Thermoplastic olefin membrane is another flat roof option made from. It typically has a lifespan of 40 to 50 years although most manufacturer warranties only guarantee a lifespan of 10 to 15 years. Fibreglass roofs can last for 50 years. In our experience a professionally applied fibreglass roof will last a lot longer than the 30 years.

Professionals believe a well installed grp fibreglass roof will last for at least 25 years. This is where the term alligatoring comes from. Compared to an average life expectancy of bitumen based materials the life expectancy of a fibreglass roof is far greater than other flat roof products making it a cheaper option on a year by year basis. For one all roofs have a certain life expectancy.

The result is the roof becomes to looking wrinkled and cracked like the skin of an alligator. You will have to also take into consideration the environment the surface is exposed to the level of maintenance it receives over the years and the amount of foot traffic. For grp roofs this can reach up to 50 years well over the average flat roof. When a grp roof does reach this age it can lose its elasticity.

Unfortunately though they have a bad reputation due to their propensity to leak or become damaged through pooling water.