We have an eco type house with a flat roof made of fibreglass which is seven years old approx. The roof is laid on a concrete screed and water has been entering the property with tell tale marks on the ceiling. We have new home insurance and a claim has been made.
The policy refers the the waterproof envelope and I was wondering if this is the fibreglass itself or does it include the concrete screed underneath and the board underneath the concrete?
I certainly wouldn’t recommend fibreglass as a roof covering and I’m looking at single ply as mentioned in this Build It article.