Dryvit expanded polystyrene (EPS) is manufactured to the requirements of BS EN 13163 from pre-foamed beads of polystyrene. These are fused together under pressure in a steam-heated mould to produce a lightweight cellular plastic with very good insulating performance. It has a nominal tensile strength of 100 kN/m2 and a minimum strength at 10% compression of 70 kPa. Density is 15 to 17 kg/m2. Reaction to Fire Classification to BS EN 13501-1 is Euroclass E.
Dryvit EPS is used to provide insulation to the external walls of new construction and refurbishment projects when used as an integral part of the Dryvit Outsulation and Drysulation range of External Wall Insulation Systems.