Thanks for all the replies on the panels! I think I'd go for the metal panels to be honest, fibre Glass is okay and won't rot but am going to have a go at welding myself as I've never done it before[:0]
In the file I got with "Marg" there is a sheet of panels and prices from a company called Coventry Commer Panels is that someone on here?
In the file I got with "Marg" there is a sheet of panels and prices from a company called Coventry Commer Panels is that someone on here?