Universal sloped roof solar panel mounting system

A support surface attachment device configured to attach a photovoltaic module to a support surface, the support surface attachment device comprising:

• a base assembly to secure the photovoltaic module to the support surface;
• a clamp assembly that is attachable to the base assembly, the clamp assembly including:
• a lower clamp member including a ledge, and
• an upper clamp member that is engageable with the lower clamp member;
• a skirt configured to be clamped by the clamp assembly;
• and
• a plurality of skirt spacers including a first skirt spacer and a second skirt spacer, each of the first skirt spacer and the second skirt spacer including:
• a first side configured to sit on the ledge of the lower clamp member when clamped with the clamp assembly,
• a second side opposite the first side, the second side having a first portion and a second portion to engage the skirt against the clamp assembly, the second portion being offset from the first portion,
• a protrusion that extends from the first side, and
• an identification marking located on the second side, the identification marking denoting a thickness dimension,
• wherein a thickness dimension of the first skirt spacer is different than a thickness dimension of the second skirt spacer, such that:
• the skirt is oriented at a first height position when the first side of the first skirt spacer is positioned on the ledge of the lower clamp member, and
• the skirt is oriented at a second height position when the first side of the second skirt spacer is positioned on the ledge of the lower clamp member.