Insulation for Walkout basement
I have thoroughly searched this forum, and I still can't quite find the answer to my question, I hope you can help. Please look at the picture of my basement, and let me know how you would approach insulating it. My plan was to cover the concrete wall portion with 1" or 2" XPS, but not to go all the way to the ceiling with the XPS, as this seems very expensive and unnecessary. Then build 2x4 walls up against the XPS, but go all the way up to the ceiling with the walls. I want a flat wall from top to bottom. Then filling the walls with unfaced insulation. I know that if I were using XPS from floor to ceiling, I would not use a vapor barrier based on pervious posts. But if I am only using XPS part way up the wall to cover just the concrete portion of the wall, how should I handle the vapor barrier issue? How should I seal the concrete portion of the wall vs. the above grade portion of the wall? This home is a bit north of Salt Lake City in Utah.
Last edited by sandtkay; 11-10-2012 at 03:36 PM.