Thanks for the info re the shed dormer. Now, this brainiac applied stucco on the walls of the dormer such that the t-locks on the main roof (which are laid over cedar shingles) are embedded in it. My thought is to cut the stucco close to the roof and break out the shingles, strip, clean, ply, paper and reshingle with thirty-year. Step flash up the stucco wall, then cut a 1/4" groove in the stucco 4" up from and parallel to the roof, then take counter flashing with a 1/4" 90 degree on it and embed it in caulking in the groove, and screw the flashing to the wall with neoprene washered screws. Anyone got any better ideas or reasons why this won't work? Thanks for your time, Rich.