What is the best rigid insulation for the exterior of walls?
I would like to know if there are any issues or preparation work required when placing 2" EPS insulation against poured concrete walls+concrete blocks+bricks, all part of the same wall assembly?
As the bricks that sit atop the concrete walls are uneven (along the grout and brick face), would it be best to apply a skim coat of mortar, like Type S to parge and even the surfaces, then add my EPS?
I am planning on insulating my Cold Room (area below my porch), similarly to the rest of my basement (2" EPS+stud/mineral wool batts) and condition it with the interior space. I plan on having a door and pass through vent. I have removed all the wood forms and also plan to add at least 2" of EPS to the concrete ceiling and mineral wool. My cold room is a small 6' x 6' space.