No poly vapor barrier / Discussions

Does 2" EPS foam board on basement walls cause concrete freezing issues?

...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 m...

Posted by Gar Wia June 16, 2025 Basements improvements 1 response