Arregi, BeñatGaray-Martinez, RobertoAstudillo, JulenRamos, Juan Carlos2020-06-30Arregi , B , Garay-Martinez , R , Astudillo , J & Ramos , J C 2020 , ' Monitoring and thermal performance evaluation of two building envelope solutions in an apartment building ' , E3S Web of Conferences , vol. 172 , 25002 , pp. 25002 . https://doi.org/10.1051/e3sconf/2020172250022555-0403researchoutputwizard: 11556/971Publisher Copyright: © The Authors, published by EDP Sciences, 2020.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.1957756enginfo:eu-repo/semantics/openAccessMonitoring and thermal performance evaluation of two building envelope solutions in an apartment buildingconference output10.1051/e3sconf/202017225002Building envelopesBio-based multi-layer building envelopeForest-based materialsBiocomposite profilesBuilding envelopesBio-based multi-layer building envelopeForest-based materialsBiocomposite profilesGeneral Environmental ScienceGeneral EnergyGeneral Earth and Planetary SciencesProject IDinfo:eu-repo/grantAgreement/EC/FP7/609067/EU/FOREST BASED COMPOSITES FOR FAÇADES AND INTERIOR PARTITIONS TO IMPROVE INDOOR AIR QUALITY IN NEW BUILDS AND RESTORATION/OSIRYSinfo:eu-repo/grantAgreement/EC/FP7/609067/EU/FOREST BASED COMPOSITES FOR FAÇADES AND INTERIOR PARTITIONS TO IMPROVE INDOOR AIR QUALITY IN NEW BUILDS AND RESTORATION/OSIRYSFunding InfoThe research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) under grant agreement ID 609067.The research leading to these results has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) under grant agreement ID 609067.http://www.scopus.com/inward/record.url?scp=85088462902&partnerID=8YFLogxK