%0 Journal Article %A Arregi, Beñat %A Garay-Martinez, Roberto %A Astudillo, Julen %A Ramos, Juan Carlos %T Monitoring and thermal performance evaluation of two building envelope solutions in an apartment building %D 2020 * EDP Sciences %X A bio-based multi-layer building envelope assembly has been developed for its integration in newly built and retrofitted buildings. Forest-based materials and biocomposite profiles are used as an alternative to fossil-based insulants and metallic framing, providing a well-insulated and low-thermal-bridge technical solution. The wall assembly has been installed as the external envelope of one apartment of a housing block in Donostia-San Sebastián (Basque Country, Spain). A comparative study has been performed for the bio-based wall and the reference wall of the building. Their in-situ thermal resistance has been obtained by means of three different methods: (1) the steady-state average method, (2) a semi-dynamic method from heat balance at the internal surface, and (3) a dynamic multiple regression method. Reasonably consistent results have been obtained with the three methods: a discussion is provided on the influence of measuring periods and boundary conditions. Outputs from this experimental campaign are valuable as a counterpoint to desktop studies and tests under controlled laboratory conditions. Learnings and outputs from the present study should contribute to a better understanding of the in-situ performance of building envelope assemblies and their assessment methods. %K Building envelopes %K Bio-based multi-layer building envelope %K Forest-based materials %K Biocomposite profiles doi 10.1051/e3sconf/202017225002 %U http://hdl.handle.net/11556/971 %~ GOEDOC, SUB GOETTINGEN