We're going to use metal siding on our house. We're using a corrugated profile. Where the siding meets walls/corners/windows, it will run into a strip of C-channel (or J-channel).
Visually, that looks great, but doesn't seem to be much of an actual weatherproof seal. I've searched quite a bit and even asked our siding provider if that is sufficient but there doesn't seem to be a whole lot of info out there on installing metal siding horizontally like this--at least not at the residential level.
Is it OK just to have the siding run into the J-channel? Or should there be more of a seal between the two?
The only possible viable option I've found is expandable foam tape. The idea would be we'd run that along the inside of the C-channel, and then when the siding is inserted that'd create a bit more of a seal.
Any other thoughts/suggestions?
Here's a rendering of the issue. The orange(inside)/blue(outside) is the J channel along the side of the window. The corrugated siding then is inserted into the channel.