Installing Solar Panels On Cabin Roof
So I’ve put off this post for a while, probably because mounting them on the roof was really tough and I was short hand, hence not many photo were taken. These panels were installed in August this year. I used some uni strut made I found in our dumpster at work. It’s way heavier duty than I need but it works. It weighs more than the panels I think.
I found these 75watt siemens solar panels on craigslist here in Seattle a few years ago. They were a good deal at $125 each and I got 8, selling 4 for profit and selling 2 for a friend. I wired them parallel for a maximum 150 watts, 18 volts and 9 amps in perfect conditions. They are wired to a charge controller that then charges batteries.
To get this 65lb rack and panels up to the very steep roof I put the ladder at the same angle as the roof and pushed it up as my wife pulled on the rope that went over peak of the roof back down to the other side. She could only hold the panels from slipping back down so we inched it up then the rope was tied off so I could attached the brackets to the rack and the rack to the roof. The brackets were big thick 8″ L shaped brackets that I slipped under the shingle above them and drilled through the roof with a healthy amount of caulk. Then the shingle was glued back down over the bracket.
So far this solar setup makes more power than we need for our little cabin. We only use it on the weekends to run lights all night, charge tool batteries, power stereos and my laptop.
Here’s me on the roof attaching the panels to the roof. This looks really boring but I’m hanging off a yellow rope that’s tied to my waist, definitely not OSHA certified. I ended up hammering in a few ladder jacks on the 12/12 roof but I only had enough room for a 12″ board to stand on. So glad that was done. They are attached by 4 3/8″ galvanized lag screws and raised off the roof 5 inches to let snow and rain pass below the array.