Replies

1. Expert Member
   RICHARD EVANS | Jan 11, 2019 07:55am | #1

   Mark,

   You can seal them with Zip Liquid Flash.
   https://youtu.be/Mn5KaKu-tt0

2. 
   jberks | Jan 11, 2019 08:15am | #2

   I think it's good practice to cover the fastners in a WRB regardless. Most people would roll their eyes, but hey, I'm OCD.

   I prefer a liquid flashing just cause it's a little easier to work with, and more efficient with uasage and wastage.

3. 
   JC72 | Jan 11, 2019 08:51am | #3

   +1 on the liquid flash.

   Now would a high performance builder take the time to do that? If it's not needed to be done in order to pass inspection or maintain warranty than I would think he's not obligated to do it.

1. Expert Member
   MALCOLM TAYLOR | Jan 11, 2019 11:31am | #5

   I'm not sure just because poor workmanship will pass inspection that gives a builder an out not to remediate. Over-driven nails affect both the ability to withstand moisture and resist shear.

4. 
   aaronbeckworth | Jan 11, 2019 10:58am | #4

   Mark,

   To see a project utilizing Zip liquid flash, Google search ‘Matt Risinger Zip 2.0’. That search will bring up the YouTube video of Matt’s interview with Doug Cameron. If you are not yet familiar with Matt’s videos, then you are in for a treat.

   To protect the smart investment you made in Zip R sheathing, you should definitely include a rain screen detail. Zip R with a rain screen detail is what I’ve settled on for the design of my upcoming build. That project has been purposeful delayed for coming on two years, over which time I’ve carefully followed GBA and all of the great leads and links offered in blogs and Q&A posts.

   Regards,
   Aaron

5. 
   harrison55 | Jan 11, 2019 12:53pm | #6

   Thanks, gentlemen. :-)

   Liquid flash sounds like the answer.

   And, yes, Aaron, I am planning on a rainscreen.

   Mark

6. 
   Peter Yost | Jan 11, 2019 01:26pm | #7

   Hi Mark -

   Here is the official response to this issue from the Technical Library Huber online: http://www.huberwood.com/technical-library//8/323

   "Do Fastener Heads Need to Be Taped Over?
   Overdriven fasteners do not necessarily void the ZIP System® sheathing warranty. However, when a fastener misses the framing and results in a “shiner” or if a fastener penetrates roughly half way or more through the panel, steps must be taken to seal these penetrations. Shiners should be removed and holes should be covered with ZIP System™ tape or ZIP System™ liquid flash. Fasteners that penetrate roughly half way or more through the panel should also be covered with tape or liquid flash."

   I have seen the lab and field tests that Huber does on their ZIP sheathing products - really impressive robust tests and results, both in terms of water and air leakage when fasteners are overdriven "slightly" (less than the halfway overdriven that need tape or sealant).

   On the other hand, it certainly does not hurt to seal any and all penetrations with the Liquid Flash sealant.

7. 
   user-2895420 | Jan 11, 2019 02:17pm | #8

   Mark,

   We just had this same over driven fastener situation with our R-6 Zip Sheathing a couple of months ago. We ended up sealing every single nail head with liquid flashing. Sealing those nail heads with Zip Tape would have been a TREMENDOUS amount of additional work and time. I can't imagine being on top of a 24' ladder and dealing with hundreds of little pieces of sticky Zip Tape. With a sausage caulk gun and a putty knife, the job goes pretty quickly.

8. 
   walta100 | Jan 11, 2019 03:43pm | #9

   If you are in a seismic hurricane or tornado zone, I would ask for Steel Wall Bracing to be installed on the inside of the wall or a letter from a licensed engineer stating that the wall is sound in their opinion. Does anyone else find it strange that Huber made no commit about the structural question?

   https://www.homedepot.com/p/Simpson-Strong-Tie-TWB12-11-ft-4-in-Galvanized-Steel-Wall-Bracing-TWB12/100375133

   Walta

9. 
   Jon_Lawrence | Jan 11, 2019 05:20pm | #10

   Like other have said, use the liquid flash. I used Prosoco because I had a free case and just by chance, the color matched my 1/2" Zip wall sheathing. I decided to use the 1/2" because I was concerned about overdriven nails and like the extra depth to help compensate. Framers love to overdrive nails.

1. Expert Member
   MALCOLM TAYLOR | Jan 11, 2019 05:36pm | #11

   Jonathan,

   Yes they do! Although the most common cause I see when doing inspections is owners using compressors with too small tanks that have to cycle frequently, leaving some nails a bit proud, and some overdriven.