Solar in Boise has a strong dry sun and a roof that may not be ready to carry an array. Foothill wind loads the mounts. Freeze-thaw works the eave the feet may be crowding. Summer heat cooks the covering the rails would pierce. Evaporative coolers already occupy a lot of these roofs. The visit is whether the framing and the covering can carry the array, not a speech about the sky.
Do not set feet on a cooked or lifted slope, and do not crowd a cooler curb that already leaks. Finish the covering first or the rails block the real repair. Ask how the mounts are flashed against foothill wind. A shaded roof under older trees is not a bare west-side slope. Say which one you have, because a photo from above has not opened the attic.
Ask who owns the panels and who gets called when an inverter goes quiet. Name the modules and the inverter before the layout is treated as settled. Put the gear where you can reach it in winter, not behind a locked gate. Shade from a cottonwood still counts on a bright day. If those answers are fuzzy, do not let the sky become the scope. Say what the electrical panel can already hold.
Wind and a tired shingle are reasons to talk about mounts and whether the roof can carry the array. They are not reasons to skip the framing. If a roof claim is open, finish the covering before any attachment. Freeze-thaw will find a foot flashed in a hurry. You want the load path named and a person to call when the inverter goes quiet. Do not pierce a deck you already distrust.
Say the part of Boise, whether the roof is tired, and whether a cooler already owns part of the slope. Mention shade, the panel, and who owns the equipment if it is already up. If the covering needs work, that is the first call. The array does not get a vote until the roof can carry it. Call the number on this page.