Hello I am new here and I need some advice. I am in the process of selling our home. I installed the roof myself about a year ago and through the inspection process I am now aware of a mistake I made. I am by no means a roofer but I have installed a couple in my lifetime. When I installed the roof I did not have the shingles hang over the edge of the fascia board. My shingles are even with the edge of the roof and apparently this can cause water to run back up under the shingles. How can I fix this? Can I install drip edge to alleviate the problem? Is it possible to re roof the bottom row and hang them over the edge? Any advice is greatly appreciated.