Sometime in the past a contractor installed this flashing between the siding and the concrete stoop. It was sealed with tar and then concreted over, which, of course, failed and has been leaking water under the flashing. The concrete stoop is exposed to the elements, getting rain and south Mississippi morning sun. I’ve removed the concrete he used to cover the flashing and fixed all the water damage.
Any ideas on the best way to seal the flashing to the concrete, especially considering it is exposed? No problems in caulking the top part of the flashing where it meets the siding, but not sure what to use to seal the flashing to the concrete. I’ve thought about using a silicone caulk or a urethane adhesive and then covering with a strip of EPDM single adhesive roofing repair/joint tape. I don’t think flashing tape is a good choice because of the exposure. Whatever I come up with, what would be the best way to prepare the concrete for a good bond? Also, can you paint the EPDM tape?
I know this is a bad design and the best solution would be to tear out the stoop but that is not an option at this time.