Airtight sheathing: sealing nail penetrations?
I have been reading as much as I can find on the airtight exterior sheathing method. I am still left with a few questions:
1. When taping the sheathing seams (1/2″ cdx ply in my case), should nail penetrations in the sheathing, both near the seams and “in the field” also be covered? Eric Whetzel caulked and taped every nail in his ZIP sheathing in his Urban rustic article: “Air sealing the exterior sheathing” though it is unclear to me whether this step is necessary when my WRB (Tyvek) will be applied over top of my sheathing.
2. By the same token, should a self sealing tape be strategically applied to the sheathing to seal subsequent fastenings of the WRB and siding which will penetrate the sheathing?
I suppose if I just tape my stud layout with continuous top to bottom strips I could cover existing nails and hopefully seal all future ones. For reference, based on recommendations found on this site, I’ve ordered many rolls of 3M all weather flashing tape 8067. 3M claims this tape is able to “pass nail sealability before and after thermal cycling”
Thanks so much! This website has been an informational gold mine for me during my construction.
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