Historical: EPS Insulation (expanded polystyrene) - 2015
This information reflects our best understanding of product composition in 2015.
ASTM C578 defines expanded polystyrene (EPS) thermal insulation as a, "cellular plastic product manufactured from pre-expanded polystyrene beads subsequently molded into desired shapes and sizes resulting in a product which is rigid with closed...
More about Historical: EPS Insulation (expanded polystyrene) - 2015
ASTM C578 defines expanded polystyrene (EPS) thermal insulation as a, "cellular plastic product manufactured from pre-expanded polystyrene beads subsequently molded into desired shapes and sizes resulting in a product which is rigid with closed cellular structure." EPS foams fall into ASTM C578 Types I, II, VII, IX, XI, XIV, and XV. Rigid EPS foam boards contain flame retardants in quantities sufficient to meet standards outlined in the ASTM standard. This CP describes unfaced, rigid EPS foam insulation boards suitable for a range of insulating applications.
A more up to date CP is available here: https://pharos.habitablefuture.org/common-products/2079007.