Hello all. I'm going to be building a closet in my basement in the are in the picture. As you can see, wires are run perpendicular along the joists above in the area where I would place the top plate. I had planned on installing XPS insulation against the concrete wall and then building the back wall. However, the wires are in the way--I was thinking I could tap con a 2x4 to the XPS and into the concrete below the joists and then attach the top plate to that, effectively making a soffit for the wires and any future wires. I could then put XPS and spray foam in the rim joist area. Anyone have any other suggestions--obviously with my method there would be a gap in insulation because it could not run all the way to the ceiling joists.
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