

https://safetyrailsource.com/products/nextgen-hitchclip
With just a little pre-planning when the weather is ok, you can install some brackets or fall harness mounts under the shingles.
Solar panel mounts would also work. There’s plenty of things designed to mount to the roof while still maintaining water proofing.












No, most things slide under a shingle so the water never touches the fasteners.
Some things screw right through with sealant on top, but that’s not the best way to do it, cause sealant will break down over time.