DS EN 14318-2:2013 Thermal Insulating Products For Buildings - In-Situ Formed Dispensed Rigid Polyurethane (Pur) And Polyisocyanurate (Pir) Foam Products - Part 2: Specification For The Installed Insulation Products Defines requirements for in-situ formed dispensed polyurethane foam (PUR) and polyisocyanurate (PIR) foam products when installed into cavity walls.