So I hav e now spent a couple of hours looking at roofing covers. I have a shallow pitched roof covered in felt at the moment but it needs redoing every few years so I have been looking at EPDM covering. Basically a big sheet of rubber that you glue to the roof, lasts 20 years, that'll see me out.
The thing that interested me though was in one of the company videos they were laying it over Celotex, got me thinking that I might insulate and waterproof all in one go.
Has anyone used this stuff?