Quote:
Originally Posted by John Mercier
Zip is OSB with the WRB (think Tyvek, Typar, Rexwrap, etc) already applied.
The problem is that it has more seams to tape, it is harder to flash for penetrations like windows and doors, and if the outer coating is damaged in any way... and not taped over... it will take in water like an OSB with no WRB protection.
https://www.qualitybuilt.com/resourc...pros-and-cons/
If you look toward the bottom of the article, you will see pictures of application issues for each. |
Back in the 80's builders used a lot of OSB board in place of plywood with no covering wrap. I also saw some builders putting clapboards right over 2x6 16"OC exterior walls with no sheathing.
I think if you have wood siding it holds up well. Vinyl siding seems to hold in more moisture which is the killer of sheathing.