I built a covered patio roof which is composed of 2x6x12' stringers 24" o.c. Perpendicular to the stringers is 3/4" tongue & groove (T&G) with 15/32" plywood. The felt and rolled roofing has not been installed yet.
The covered roof, as I expected, really reduces the amount of natural light in the adjacent living room and family room. I want to install two curb mounted 2'x4' skylights between the strinters to draw in more natural light.
The first thing to do is cut a 2'x4' opening thru the T&G and plywood. Here is my intended procedure....after determining where the skylights go I'm going to drill a hole thru the roof from the underside about 1/2" from the stringer in the four corners where the skylight goes. I'll draw a line connecting the four holes and cut out with a circular saw. I'll then use a router bit with bearing to flush up the cutout with the stringer on two sides.
Here is my question....What kind of router bit will flush up the cutout and cut through 1 1/4" of wood? I think I can buy a 1/2" shank top bearing mounted flush trim bit with a 2" long cutting capacity. Comments and/or suggestions about this procedure would be appreciated.
Secondly, since I need the bit in a couple of days, where would I find this bit? Home Depot? Lowes? or Rockler?