Integrating Windows with Water-Resistive Barrier
Hello GBA friends,
(I apologize ahead of time if this is a silly question)
For context- Climate Zone 5b.
I’m attempting to install a few flanged windows in my detached garage, which is going to be my workshop.
-The existing structure/wall assembly is: 2×4 studs 16″ O.C., heavy tar paper over the studs, then 1/2″ sheathing, then vinyl clapboard siding.
I believe the sheathing might actually be a ply T1-11 siding, that was then sided over later with the vinyl. (I need to verify)
So, how do I integrate the windows into the WRB if it’s behind the sheathing?
Do I want to attach my windows to the plane of the studs?
Could the T1-11 be considered a drainable housewrap, haha?! Therefore install and flash the windows to the plane of the sheathing?
Do I have to tear off all the siding and install a new WRB over the sheathing so I can install the windows in the plane of the sheathing and have it all integrated?
Please let me know if more information is needed.
Any help and insight would be much appreciated! Thank you all!
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