"Lee Blaver" wrote in message
...
The thing that bothers me about fibreglass (apart from one of the
neighbours' fibreglass roofs leaking...) is thermal movement of the
building and/or UV damage causing cracking. Although I suppose both are
easily avoided with the right resin.

I work 20ft from a harbour full
of fibreglass boats which are there
365 days a year & get
baked/frozen/beaten - they mostly
sink cos the mooring ropes aren't slacked off
when there is a spring tide