Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

The insulation performance of the building is one of the most fundamental factors to reduce the energy use in building. The building’s heating and cooling load account for the largest portion of the building energy consumption. And the insulation of building envelope is the main factor that directly affects the cooling and heating loads. For this reason, the thermal performance of the building insulation materials is very important for saving building energy. However, the building insulation materials have a problem in which the thermal performance has been deteriorated over time. Assuming that the lifetime of the building is about 50 years or more, the long-term performance of the insulation materials applied to the building is a very important factor affecting building energy consumption. In addition, the insulation material of building is generally located in the middle of the building envelope layers, which makes it very difficult to replace and retrofit when thermal insulation performance decreased. For these reasons, various standards have been proposed to test and evaluate the long-term performance of building insulation materials. In this study, the long-term performance of building insulation materials was tested and analyzed based on the standard of the accelerated aging test. The building insulation materials used in experiment were 5 types such as EPS, XPS, PF board, PIR-1 and PIR-2. The accelerated aging tests were conducted based on KS M ISO 11561 and BS EN 13166 standards. The results of the accelerated aging test for the materials were presented and the thermal conductivity of insulation materials were also compared.