Do I need to ground metal shingles? Is my home vulnerable to lightning strikes?
Typically, a lightning strike the highest object around and rarely is that the tip of the house. Grounding of metal roofing is usually not required by most major building codes. However, some local building codes may require it. Do check with local building codes before starting your installation. And of course, metal roofs can be grounded by a lightening protection specialist at your request.