Not all coated steel is the same! One of the fastest growing types of metal roofing available is that which uses a coating alloy of aluminium and zinc with a specific formulation patented by Bethlehem Steel some 40 years ago
Not all coated steel is the same! One of the fastest growing types of metal roofing available is that which uses a coating alloy of aluminium and zinc with a specific formulation patented by Bethlehem Steel some 40 years ago