I’ve got a pretty serious leak in a section of roof where once there passed a chimney. Previous owner demolished the chimney and put a vent/cap there instead.
The cap is “flashed” with metal and passes over existing standing seams on either side. They bolted it down and looks like they’ve been adding tar and caulk for years, to no avail.
I’m thinking the best thing to do is unbolt this mess, clean it up nicely, and replace it with some galvanized metal.
What is a good adhesive/sealant to use? A combination of tar/patch and paintable silicone? Any tips on how best to make this work, as far as flashing techniques go?