Solar panels can be installed on many roof types. The panels can be tilted up as well as flush-mounted. It is much easier to locate the rafters when the roof is off to install the mounts for the panels. The mounts need to be secured with stainless steel lag bolts bolted into the roof rafters. Shingle roofs are easy to work with because there are no special requirements needed. Tile roofs are difficult to install on and transporting solar panels across them can be challenging.
- Skill level:
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Things you need
- Solar panels
- Mounting kit
- Tar and heater
- Safety goggles
Remove the tiles at intervals where the mount will be installed.
Find the rafters with a stud finder, then use a laser sight or chalk line to for a straight-line mark where each mount will go. Use a drill to pre-drill with a pilot bit to steer clear of splitting the rafters.
Install the mounts where the holes you made earlier with stainless steel lag bolts.
Place metal flashing over the mounts and hot-mop (seal with tar and heat) around the mounts. Secure the metal rails to the mounting posts with 0.375 bolts.
Cut a hole into the tile to fit snugly over the mounting bracket and seal with tar.
Install the solar panels and attach them into an array.
Install the conduit and run the wires to connect the panels to the inverter.
Tips and warnings
- Always wear safety goggles.
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