If you want to avoid lag bolts you might want to check out our line of Commdeck and Retrodeck Mounting Bases. Likewise if you want to install on a flat roof or metal roof we have those base units also.If While the Starlink dish itself is designed to meet U.S. National Electrical Code (NEC) grounding requirements, you may want to consider additional grounding or lightning protection, especially in areas prone to lightning, to reduce the risk of damage from surges or lightning strikes. We have grommets