BS 3837-2:1990

Polystyrene, Extruding, Boards, Foams, Plastics, Grades (quality), Fire resistance, Thickness, Dimensional tolerances, Compressive strength, Permeability, Water vapour, Water absorption, Water-absorption tests, Thermal conductivity, Dimensional changes, Creep, Creep testing, Test specimens, Marking, Cellular materials, Test equipment, Testing conditions, Diameter measurement, Insulating boards, Thermal insulating materials, Construction materials