Roofs of Long span structures are made of steel trusses. They are can be designed with glazing ( inclined glass panels towards north sky) on north side, since in northern hemisphere there is no...
Most come with a true 30 to 50 year warranty. You can expect a metal roof to last at least 2 to 3 times longer than a regular roof. In general terms, count on a metal roof lasting 40 to 60 years and...