University of Oulu

Filip Fedorik, Jiri Zach, Marja Lehto, Hanna-Riitta Kymäläinen, Risto Kuisma, Marja Jallinoja, Kimmo Illikainen, Sanna Alitalo, Hygrothermal properties of advanced bio-based insulation materials, Energy and Buildings, Volume 253, 2021, 111528, ISSN 0378-7788,

Hygrothermal properties of advanced bio-based insulation materials

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Author: Fedorik, Filip1; Zach, Jiri2; Lehto, Marja3;
Organizations: 1University of Oulu, P.O.Box 8000, FI-90014 Oulu, Finland
2Brno University of Technology, Faculty of Civil Engineering, Veveří 512/95, Brno 602 00, Czech Republic
3Natural Resources Institute Finland (Luke), Latokartanonkaari 9 FI-00790, Finland
4Department of Agricultural Sciences, University of Helsinki, P.O. Box 28 FI-00014, Finland
5School of Engineering, Oulu University of Applied Sciences, P.O. Box 222, FI-90101 Oulu, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link:
Language: English
Published: Elsevier, 2021
Publish Date: 2023-10-01


Hygrothermal performance of buildings is one key element to the sustainable design, health, and comfort of the indoor environment. Building sustainability depends on all associated lifespan stages, from building design and material production to demounting and waste management. Many building materials are unsustainable in terms of their environmental impacts. One approach to reduce environmental impacts associated with buildings is the development and application of bio-based building materials. The aim of this study was to determine the hygrothermal properties of bio-based thermal insulators that promote energy efficiency and contribute in decreasing environmental impacts of buildings. Here, the hygrothermal properties of eight new peat-, recycled paper-, wood shaving-, and feather-based insulation materials were assessed. Measurements of these material properties will improve understanding of the energy efficiency, permeability, and sustainability of new buildings, building retrofits, or both. Data on these new materials will provide the necessary parameters to develop a hygrothermal dynamic numerical model. The studied bio-based materials appear to provide sufficient hygrothermal performance, which is comparable with conventional insulation materials with minimum embodied energy.

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Series: Energy and buildings
ISSN: 0378-7788
ISSN-E: 1872-6178
ISSN-L: 0378-7788
Volume: 253
Article number: 111528
DOI: 10.1016/j.enbuild.2021.111528
Type of Publication: A1 Journal article – refereed
Field of Science: 212 Civil and construction engineering
Funding: We are grateful for the support of this work through project A73145 (PaiBiRa - Paikalliset Biopohjaiset Rakennusmateriaalit) funded by the European Regional Development Fund (ERDF) leverage from the EU 2014-2020; from the Academy of Finland (Climate Change and Health (CLIHE) project 329885, awarded to Filip Fedorik); the Uusivu project (New business from byproducts) funded by the Rural Development Programme for Mainland Finland 2014-2020 (chicken feathers); and the Internal project of Faculty of Civil Engineering, Brno University of Technology FAST-S-21-7355.
Academy of Finland Grant Number: 329885
Detailed Information: 329885 (Academy of Finland Funding decision)
Copyright information: © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license