New construction: exterior walls
Hello, first time builder and avid researcher and want to build my house “right”.
We are building our home in Minneapolis MN and we believe have signed up a trusted builder.
We are planning on using Stucco on the entire house.
Wall construction as follows based on my current plans from the builder.
2 layers grade d building paper
1/2″ Plywood Sheathing
2×6 Studs 16″ OC
3″ Spray Foam Insul and Sealer or Fiber Glass Batt.
Continuous Poly Vap Barrier 6 Mil – Seal all seams & Penetrations
1/2 Gyp BD – Taped, Sanded Painted.
I am very worried about the stucco and making sure we do this right so we do not have moisture problems. And also would like to see the wall have a bit higher R rating.
They are planning on using a Flash and Batt system, which I questioned via email and thought I was going to be good because what I read says 3″ and here was the response.
“The flash and batt system uses 1/2″ – 1” of foam so it intentionally does not create a vapor barrier, then the batts go in with the normal poly vapor barrier on top.
If you saw 3″ it was likely referring to the rim joist areas, in those areas to seal the transition between the foundation and the framing we use all spray foam to assure a tight seal as there is no way to get standard insulation to fit tightly into all those tight areas.
What is your opinions on this type of exterior wall? Should I be questioning this?
I am far from a building expert and hate telling others what they should be doing, but I also want to be sure I am doing what is going to be a good long term solution.
Also I have attached the plans. I am open to any suggestions. I was first attacking the Exterior Walls but am open to any suggestions. Again no matter the cost I want to do this right the first time.