EPS board insulation / Discussions

...insulation aspect of finishing our basement correct, but I'm still not sure. The two different kinds of foam boards I've been looking at are, Kingspan Insulation R-10 2in*4ft*8ft unfaced polystyrene foam board from Lowes and the Foamular 150 2in*4ft*8ft R-10 unfaced squared edge insulation sheathing from Home Depot. Ar...

...insulation to keep it cool. Can I put foam board in between my studs and tac nail it? You could put foam between the studs, but why not batts? Were you choosing foam due to reading here about using foam on basement walls to stop vapor from migrating into walls? If that’s the reason, I would sooner try to slip a sheet o...