Abstract: A mounting assembly is provided for puncture-free attachment of a snow guard system to a roof seam. The assembly comprises a mounting block, at least one clamping member, and an actuation member. Once actuated, the clamping member prevents relative movement between the mounting block and the seam. At least one clamping member positioned adjacent a groove located in the base of the mounting block. The clamping member includes a first side having at least one primary contact surface outwardly protruding a first distance from the first side. The clamping member also includes at least one secondary contact surface protruding a second distance from the first side. In the preferred embodiment, the second distance is less than the first distance thereby making the primary contact surface(s) the first to engage the seam upon actuation of the member. Preferably, the clamping member includes a second side having at least one protrusion for engagement with a first end of the actuation member.