Can the 10 ft. 5V Crimp Galvanized Steel 29-Gauge Roof Panel metal roofing be used over shingles?

Yes, metal roofing panels can be installed over the existing shingles

Yes, metal roofing panels can be installed over the existing shingles as long as you do not have more than one layer of shingles. It is recommended you use a moisture barrier or batten strips between the shingles and the metal panels. Check with your local building code for gauge and fastening schedule.