Does 2" EPS foam board on basement walls cause concrete freezing issues?
In climates where -25 celcius in winter is normal, does moisture in basement concrete walls behind interior 2" EPS cause concrete freezing issues given concrete is always "wet". Wet being wicked from footing or migrating from soil through concrete wall. House is 1976 raised bungalow build. Basement floor is approx 4 ft below grade. Exterior bitumen concrete paint likely failed. 2" EPS glued top to bottom of concrete walls, 2x4 frame ontop EPS, Roxall between 16" OC studs, drywall, latex paint no poly vapour barrier. Worried about damage to concrete walls over time due to lack of warmth from interior conditioned space reaching concrete in winter. No liquid water in basement but up to 60% RH sometimes in summer if leaving dehumidifier off. 30% RH in winter. Some spots on concrete floor and walls test higher moisture than other areas. No sump. Exterior weeping tile yes. No interior french drain. Assume cove joint cracks seep water vapour. Thank you.
You are right that concrete foundation walls will remain wet unless they are completely separated from ground moisture with moisture protection measures. And yes, concrete will freeze, but it is more block foundations where freeze\thaw can cause structural problems.
The vast majority of basements in cold climates are insulated on the interior and and lack sufficient moisture protection, so you are not alone. If your foundation was built a hundred years ago I may be concerned about the concrete mix as there was no oversight in those days, but a 1976 basement foundation is likely solid and should not be negatively impacted by adding interior insulation.
And your wall assembly sounds good, particularly omitting the vapour barrier. You may have seen this but here is our page on how to insulate basements properly to avoid mold. You will see one very easy upgrade on that page in the bottom diagram, notice how the interior framed walls and drywall are not sitting on concrete but they are raised up on small EPS blocks.
Since you have no sump pump, any flooding will saturate your framing. However, if the walls and drywall raised up on foam blocks it gives you a little wiggle room if for any reason there is ever an inch of so of water in the basement.