I have a flat roof that that is probably about 40 years old. It generally seems in good condition. It is made of felt and has gravel laid over the top of it. The problem is that the edge of the roof is splitting along the bend and It has detached in quite a few places. I would like to try and repair it. I imagine quite a few people will say get a new roof, but I am selling the house soon so don't want the expense. Can someone advise a solution? I had two in mind. Either get some new felt and try and bond it into the old felt. Or get some eaves trays and try and insert them. I am not sure if either are a good idea so looking for advice.