Be careful where you drill. Especially on the roof. SO much wire, plumbing and ducting up there. If it were me I'd find a closet and open the ceiling to find a clear spot. A lot of peps here have installed extensive solar systems. I defer to them
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Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide