XPS / Fire / Overkill
So last night I was capping the exposed top ledge on my 1.5" thick XPS that I put on my walls. I was capping it with 2" strips of drywall. Several areas I simply could not cap. Others the drywall cap came very close to my concrete sill which I did not like. I could not help but think I was wasting my time but if ever inspected I wanted t cover my butt AND apparently it provides some level of safetyÂarguably I guess.
So as I struggle to cap (and line my joists with XPS too) it dawned on me, whats the difference if I leave the top ledge of XPS exposed to the floor joist above. I read here how folks have foam blown into their floor joists. In that case you have foam against the wood of your floor aboveÂwhy would it matter if I did not cap this stuffÂ.maybe, even after reading all the threads here, I am still confused.