Rigid polyisocyanurate (PIR) and polyurethane (PUR) products for building end-use applications. Specification for laminated boards (roofboards) with auto-adhesively or separately bonded facings for use as thermal insulation boards for pitched roofs|Polyurethane, Fire safety in buildings, Laminates, Boards, Roof linings, Construction materials, Roof boarding, Thermal insulating materials, Flammability, Thermal insulation, Foamed plastics, Roofs, Dimensional changes, Compressive strength, Dimensions, Installation, Polymers, Thermal conductivity, Cyanurates, Thermoplastic polymers, Pitched roofs