Ok. For 12 months I had a set of steps kept in the van and a set on the roof. Both purchased at the same time from the same place. The difference was as clear as day. I am unsure whether or not there are different grades of GRP. I have no idea but I know what I saw. I also know that boats and the like last much longer when stored indoors when not in use. Maybe it is the way they are manufactured.What is this 3 points of contact business? :innocent
So GRP does not like being outside. Why is that then? are these GRP steps made of some inferior GRP that doesn't like getting wet or doesn't like the cold? My GRP boat has lived outside for the last 36 years, probably floating in the sea all summer and sitting on it's trailer in the winter. And I have just fitted GRP valleys on my new house. Perhaps it's time to tell the step makers that GRP is actually quite durable stuff.
Another point they do not take being ratchet strapped down very well either. Splinter very easily.