Replies

1. 
   user-626934 | Apr 18, 2019 08:49am | #1

   Seems fussy. Our preference is to keep the sheathing in the same plane as the foundation. There's a good photo here: https://www.buildingscience.com/documents/building-science-insights-newsletters/bsi-096-hot-and-wet-dry

1. Expert Member
   MALCOLM TAYLOR | Apr 25, 2019 02:15pm | #7

   John,

   I agree. The detail only become necessary because they didn't adjust the plane of the framing to compensate for the Zip sheathing.

2. 
   Peter Yost | Apr 18, 2019 12:15pm | #2

   I am checking with tech contacts at Huber for this detail. I think termination of the bottom course of any sheathing--in terms of flashing and sealing--is a detail often not treated with the import it has to taking all the water load and terminating its management right at the bottom edge.

   There are a number of wall termination details here (http://www.huberwood.com/assets/user/library/R-Sheathing_Jobsite_Poster.pdf) but I don't think they comprehensively deal with water and air control layer continuity.

   More soon - Peter

3. 
   dankod | Apr 19, 2019 09:52am | #3

   The link below will take you to Huber technical library web page with a list of installation details for typical transitions, terminations, and penetrations on ZIP-R panels. I would recommend to check details #1 and #11, cause they probably address your question the best. My favorites in both of these details are Scenario 2 which both give you a little overhang of ZIP sheathing only over the slab edge, which can easily be treated either with tape or liquid flash. It is probably better idea to use a liquid flash over concrete, and protect it from exposure to sun and UV by adjusting the height of base flashing that comes over it. This approach will also eliminate a pathway for pests to chew through the foam, although you will pay the price by loosing few inches of interior space by setting the ZIP-R panel this way.

   Hope this helps.

   Link: http://www.huberwood.com/technical-library/48/355/360

   P.S. Peter, thanks for chiming in on this one.

4. 
   Todd001 | Apr 19, 2019 11:05am | #4

   Spenceday, I believe the you were watching an NS Builders video--about 5 minutes in:
   https://www.youtube.com/watch?v=MGk2i4QiU-8
   Great detail!

5. 
   spenceday | Apr 20, 2019 12:50am | #5

   Thanks for the replies! No doubt I saw it on that NS builders video while only half watching and filed it away in my head then forgot where it came from.
   I did look at the Huber literature before posting here. I’ll probably use metal flashing in conjunction with liquid flash as the detail.

6. 
   Todd001 | Apr 25, 2019 01:13pm | #6

   Spenceday, I came across the "better" NS building video on the Zip R detail. At about the 8:15 minute:

   https://www.youtube.com/watch?v=IFdxRNsdcZ0