Code of practice for thermal insulation of roofs externally by means of sprayed rigid polyurethane (PUR) or polyisocyanurate (PIR) foam|Grades (quality), Coatings, Adhesion tests, Cyanurates, Visual inspection (testing), Membranes, Density measurement, Construction operations, Fire safety, Protective coatings, Temperature, Thermal conductivity, Testing conditions, Fire safety in buildings, Coating processes, Polyurethane, Roofs, Occupational safety, Plastics, Polymers, Spraying (coating), Thermal insulation, Foams, External, Roof coverings, Surface treatment, Thickness