Roofing

Crinkles on fibreglass roof

Anonymous user 05/10/2026 - 2.27 PM

Hi, we have a fibreglass flat roof that is only 5 years old. We've had no leaks at all. However some slightly small raised crinkles in a few places are evident but when we press them they are solid, ie not a bubble. There are no cracks or crevices in which water can enter. Is this anything to worry about or is this purely cosmetic?

Genix plumbing and building

Rating: 5 out of 5

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Hello they could potentially crack over time but right now there just blistered if you have any photos that would be very helpful but depending on the what fiberglass was used will help and what was underneath if it’s an over lay with felt then there will be old blisters that come through if it’s a new substrate then the fibre glass has unstuck in places

Answered5 October 2026

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