What is the best device/gadget and techniques to use in the following situation:
Ceiling fan to be installed outdoors in a porch area, in the slope of the roof rafters. Originally the rafters were covered with 3/8" plywood and then later covered with typical vinyl siding, roof slope is about 5/12.
What I would like to do is cut a 4" hole with a hole saw and then feed the device through and be able to fasten it in without having to do any patching etc.
I thought I remembered seeing brackets that would do what was described, feed them through the hole and then use a ratchet to wedge them in place.