However , metal shingles are not practical for flat roofing and so roofers recommend standing - seam and screw - down metal panels .
Flat or low - slope roofs can be covered with steel , aluminum , zinc , or copper just like pitched roofs .
Metal shingles are not practical for flat roofing and so roofers recommend standing - seam and screw - down metal panels .
Flat or low - slope roofs can be covered with steel , aluminum , zinc , or copper just like pitched roofs .