> If the EPS (expanded polystyrene) is covered by fiberglass insulation and/or drywall, it will last sufficiently long for you to escape from a fire. No. EPS o

> If the EPS (expanded polystyrene) is covered by fiberglass insulation and/or drywall, it will last sufficiently long for you to escape from a fire. No. EPS offgasses badly when heated. It also assumes that your coverage is 100% in drywall. If you have fibreglass, then you are sunk. Rockwool/mineralwool then you are much better.