BS 5241-1:1994

This standard BS 5241-1:1994 Rigid polyurethane (PUR) and polyisocyanurate (PIR) foam when dispensed or sprayed on a construction site is classified in these ICS categories:

• 91.100.60 Thermal and sound insulating materials

This Part of BS 5241 specifies the physical property and compositional requirements for externally sprayed polyurethane (PUR) and polyisocyanurate (PIR) foams used for the thermal insulation of external surfaces, e.g. roofs and storage tanks.