Solar in Ohio starts with the roof and the sky you actually have, not a drawing from above. Lake shores stack snow and gray days on low slopes and tug at mounts when ice slides. Inland roofs see more hail before an array should ever be fastened down. River counties add humidity and tree shade. If the covering is tired, that conversation comes before modules. Winter output will not look like July, and the gap is wider on the lake.
Someone should stand on the roof. A sky photo misses soft deck, tired chimney flashing, and an electrical service that may be original to an old house. Ask who answers for a leak at a mount, and how the array comes off when hail or ice forces a new roof. Hardware has to survive freeze and thaw. Say whether the south face is open or owned by a tree.
Name the modules and the inverters as specific gear. String equipment and module-level electronics behave differently when snow covers one corner or a chimney shades it. You should know who you call when an inverter goes quiet. Say if the equipment should be yours. A garage roof is not the house roof. A steep lake roof and a lower inland roof do not mount the same way.
Permits and the utility permission to operate are part of the job. Ask who files them and what changes if the layout must move off a bad slope. Do not cover a roof you already know has to come off. Ice leaving a valley can strike whatever is mounted below. Say the town so snow load and hail are not treated as the same design fact.
Say the age of the roof, the direction it faces, and whether you are on the lake or inland. Mention marks you can see from the yard. Call the number on this page.