Should horizontal joints on EPS be sealed or not? Tyvek Bulletin
Currently residing the house. I am using 1.5″ of EPS (fiber facing), Tyvek (wrb), 3/4 strips; a rain screen, and then the siding.
I have taped up all the plywood seams with 3m all weather flashing tape. Then installed my 1.5″ inches of EPS. I then taped up all the vertical joints with 3m flashing tape again.
However, I have not done the horizontal joints. I ran across a technical bulletin from tyvek that says that you should not tape horizontal joints because it allows any water that gets behind the foam a way to escape.
So my question is should I follow the bulletin or not?
Link to the pdf is on this page and titles below:
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