Tyvek or other WRB has nothing to do whether or not there is conditioned space inside the wall. It has everything to do with protecting the structure. The R703.2 requires that an approved water-resistive barrier is applied, according to manufacturer’s installation instructions, over studs or sheathing of every exterior wall. The approved water-resistive barrier must be continuous to the top of walls and stopped at openings and building appendages in a way to meet the requirements of the exterior wall envelope described in Section R703.1.
I just got a 100 shingles, I was working my way through the bundle using 5" singles (first "tab" width) then I hit a batch of 7". if you stagger them per Hardie (normal wall -starting from left 16" off 32" etc) and mix and match these different patterns the gaps get too close (less than the 1 1/2 inch hardie recommends). I thought it was a mistake!!!! I thought they sent me old inventory. Have you run into this problem???? @johnFLopes asked about this, so it's an issue.
omg, I need you! I just got a 100 shingles, I was working my way through the bundle using 5" singles (first "tab" width) then I hit a batch of 7". if you stagger them per Hardie (normal wall -starting from left 16" off 32" etc) and mix and match these different patterns the gaps get too close (less than the 1 1/2 inch hardie recommends). I thought it was a mistake!!!! I thought they sent me old inventory. Have you run into this problem???? I'm going to post this above to see if he'll respond.
