I had a architectural shingle on the roof where a corner was curled up just a bit. It wasn't leaking but wanted to be pro-actibve. I called a handyman an he went up and used what I thought was roofing cement. He glued it down and left a brick on it for a few days and then took it off. The shingle is preferably flat. It turns out he used Locktite Powergrab which is supposed to be used for tiles in the shower and such! I'm just wondering if this will cause a problem with the shingle. I'm thinking about the warm months when shingles expand and contract. I don't know how much roofing cement stays pliable in comparison. Am I worried about nothing here? Any comments are appreciated.

Last winter, for the first time in 18 years, after a fall 2020 roof replacement, I had ice dams and leaks, water only coming through the soffits, however (and fortunately). The house is a ranch, and the attic floor is isolated with plywood on top. However, brick chimney needs to be isolated, which will be done. Now, two problems: - V-shaped ceiling in one room, with ceiling of one V leg just a few inches away from , and parallel with, the roof. No insulation. I would think that foam insulation would be best. Any issue with humidity (do I need some kind of screen or …)? - Soffits are solid plywood. I want to replace them with plastic panels with holes/slits to let cold air into the attic. I also need to look and see if attic floor insulation has been put too far onto the soffits so that it blocks air from coming into the attic. Can see this only from the outside, so I need to remove the plywood soffits. A problem with cold air coming into the attic is, of course, that the existing ridge vents are often blocked by snow. I would greatly appreciate any comments on the above (soffit replacement and roof insulation in particular). Hans L