How durable is polystyrene and will it not shrink under a concrete screed 6c thick


Answer from: Mary:
Dum spiro, spero.Curiosity is not a vice, but very useful thing......


The service life of extruded polystyrene foam is 60 years. Slightly lower life span of thermo-impact polystyrene foam and is about 40 years.

Ask the questions that interest you, even if they seem silly, childish, strange, funny, embarrassing, uncomfortable, or abstruse.

ASKRUS.Guru 2019-2021©