Leakage around windows and doors under housewrap
I am using osb sheathing as my primary air barrier and have caulked all panel edges before install along with taping seams with 8067 all weather flashing tape. Around the window and door openings I am also taping the osb to the framing. Tyvek will be installed and wrapped into window openings using the “inverted wineglass” technique. It seems, however, that unless I seal the tyvek to the rough opening framing, that air can leak through on the back side of the tyvek, even when the flanged window is installed, flashed, and caulked correctly. Should I tape or caulk the tyvek to the rough opening? Any other suggestions on making this critical area air tight?
Moses Lake, WA
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