If the operational properties of the material are properly followed, its service time can exceed 50 years. There are two things everybody should take into account before mounting works. EPS material is organic and therefore it cannot be exposed for a prolonged period of time to a temperature exceeding +80oC. Just like any other organic material, EPS starts to rapidly decompose if exposed to excessive temperatures, becoming soft, gradually losing its shape integrity and other technical, properties. Due to this reason it is not advised to use polystyrene foam in heating systems where heating carrier temperature exceeds +70oC. EPS cannot be used under prolonged UV radiation or direct sunlight. Exposed to light, the material can start to become yellow and slowly decompose. In such cases, the material should be protected with a paint or any other protective cover.