I just had new soffits, fascia, and seamless gutters installed on a 3-story house I own. I had this done after a new roof (with all new plywood decking, etc.) was put on a few weeks ago.
My question is about how the gutters get attached to the house. Since it is an old house, some parts of the fascia are aluminum wrapped contoured would trim, and other parts are flat fascia. Where it could be done, the contractor screwed the new gutters directly into the fascia with no overhead hanging straps. But, for other areas, the contractor needed to use hanging straps that get attached to the roof.
For the areas where hanging straps needed to be attached to the roof, how should that be done?
I always thought that the hanging straps should be attached by lifting the first row of shingles and then nailing or screwing the straps to the roof underneath that first row. However, this contractor just placed the metal hanging straps on top of the shingles and screwed them in through the shingles into the roof decking.
A neighbor of mine who owns a number of properties that he has had rehabbed said that's how they do it now. When I said I thought that could cause roof leaks he said that they use clear caulk where the screws go in to prevent leaks. In my case, the contractor didn't use any caulk - he just screwed the straps through the shingles and into the roof decking.
So, how should these hanging straps be attached to the roof?