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Community and Q&A

Zip Tape At Corner of Sheathing

stuartd | Posted in General Questions on

Climate Zone 6 
2 x 6 walls with Zip sheathing, flash batt with closed cell foam and fiberglass, 5/8″ drywall
I probably know the answer, but to verify with experts, despite many promises over this now 18 months odyssey building my house, the two exterior corners where the Zip sheathing meet were never taped. I have extra corner siding pieces, and assume it would be best to have these areas taped (by another contractor at this point).

Photos of existing conditions, as well as an example of how it should be done, are attached.


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  1. tim_william | | #1

    That ain't right. The instructions from the manufacturer spell out how to apply the tape to the corners, page 19 of this guide:

  2. eust2023 | | #2

    You definitely want to get the corners taped.

  3. walta100 | | #3

    It is painful when you find out you have been cheated out of something you paid for.

    How could this have gone unnoticed when it was built? Generally, the Zip tape it applied weeks before the siding gets installed.

    If it were me, I don’t think I would spend the thousands of dollars it will likely cost to install the tape give that you home has multiple air barriers the lack of tape in 2 corners seems unlikely to make any difference.


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