US Patent 11572690 Structural attachment sealing system

A mounting device includes a base having an internal cavity, a top, and an open bottom in communication with the internal cavity. The device includes a first upper member above the base, wherein the first upper member extends upwardly from the base, and a second upper member is above the base, wherein the second upper member extends upwardly from the base. The device further includes a fastener opening formed though the base for receiving a fastener when the mounting device is secured to a roof. The fastener opening is in communication with the internal cavity.