Determine the location of the solar l feet: Before installing the L feet, you need to determine the location where the L feet will be placed. This can be done by marking the position of the panels on the roof and measuring the distance between them.   Install the L feet: The L feet should be installed on the solar mounting systems for metal roof using self-drilling screws.The type of fastener used will depend on the type of roof and the location of the L feet.   Attach the rails: The rails that will hold the solar panels in place should be attached to the L feet using bolts or clamps. The rails should be aligned properly to ensure that the solar panels will be level.   Install the solar panels: The solar panels should be mounted on the rails using clamps or bracket...