Shortages of other building materials have stepped up the use of aluminum on farm buildings for roofing and siding. And it's a satisfactory material- if properly used.
Dale, Alvin C. and Giese, Henry
"Aluminum for Farm Buildings,"
Iowa Farm Science: Vol. 3
, Article 2.
Available at: https://lib.dr.iastate.edu/farmscience/vol3/iss8/2