I am currently modeling a 2-Story Home. I have everything modeled the way I want it, but when I go to the elevations I see a gap where the siding and the sheathing don’t touch between floors.

My exterior walls:

1. Core: 3 1/2” stud + 1/2” Sheathing
2. Exterior: Air Barrier + 3/4” Siding
3. Interior: 1/2” Gyp Bd

My floors: Main:

1. Core: 3/4” Sub-Floor + 11 7/8” TJI + 1 1/2” Rim-Joist
2. My Floors: Second
3. Core: 3/4” Sub-Floor + 11 7/8” TJI

The floors are modeled to the stud to allow sheathing and siding to extend. I knew of this situation beforehand because tutorials on the interwebs say this is the way to combat your problem:

I go into the my exterior wall, select edit type, edit structure, (set preview to section) select siding, and then zoom in on the bottom of the wall in the section preview. The bottom of the siding highlights and a “unlock” toggle appears. I unlock it. I do the same to the sheathing.

Then I go to my elevations, cut a section, and zoom in to extend the sheathing and siding…

Side Bar: Why don’t the two extend independently? They should. 

To the top of wall below.

I’m golden! At least I thought.

The wall joins are all JACKED now!

So I go back into edit the wall type. Lock the sheathing and siding ends (just like I did above). And the wall joins are back to normal!

BUT

The floor is back to exposed.

Proposed Work Around:

1. Create a stacked exterior wall for the Main Floor: Edit my existing exterior wall and add a 1 1/2” Stud (will represent the Rim-Joist in section) + 1/2” Sheathing + 3/4” Siding. Create and Exterior 1 1/2” + 1/2” Sheathing + 3/4” Siding to infill walls below Second Floor where I don’t have Main Floor wall stacked.
2. Seperate and create just a 3/4” Sub-Floor. This way I will be able to extend the sub-floor seperatly under the stud walls in sections.

What do you think? I want you to comment on the Proposed Work Around, will it work? What is your experience, what works better?

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