Recent Review: The first time they arrived, the installers indicated that the skylight needed to be replaced and that they would need to estimate/acquire the skylight. When they returned, the installed the overlay, insulation and membrane roofing. There are several areas where they had to patch the membrane (over nail down spots for the overlay). I dno't know enough about membrane roofing installations to know if this is common, but I have not had any issues. I did find one brush which had fallen off the roof into a bush. I didn't find it for several weeks, so I can't blame them too much for missing it themselves.