Review of bio-based wood fiber insulation for building envelopes: Characteristics and performance assessment
Year: 2024
Type: article
Abstract: • Drivers in the energy performance of the built environment. • Hygrothermal performance of wood fiber insulation. • Energetic performance of wood fiber insulation. • Decarbonization of the built environment through bio-based insulation. • Material characterization of wood fiber insulation. A sustainable future in the built environment is contingent on the reduction of energy consumption. Thermal insulation has been widely used as a means of reducing the operational energy usage of buildings, however current products dominating the market are non-renewable, fossil-based, and utilize energy intensive production methods. Wood fiber insulation (WFI), the most successfully commercialized natural insulation product, has been produced in European nations since the late 1900′s, however spread to other regions did not occur until recently. Limited global use has led to a narrow body of research that focuses largely on material development and use in cold climates. The investigation of WFI in building envelopes is insufficient, especially regarding its biological and hygroscopic nature, as well as its impact on the building envelope’s performance. This paper aims to review WFI’s hygrothermal and energetic performance. First, material property evaluation, such as thermal conductivity and moisture sorption, provides insight into the ability of WFI to be used in buildings while determining if there are special considerations when being used. An assessment of WFI within wall and roof assemblies allows for investigation under varying climatic conditions and within building systems. Finally, whole building monitoring allows for an understanding of how WFI acts within the building envelope with human occupation. Findings reveal WFI provides comparable thermal conductivity to conventional insulation materials, while being biologically derived and vapor open. Further research is required to harmonize testing methodologies, production processes, and additives used to better the impacts these have on WFI’s properties.
Source: Energy and Buildings
Authors: Liam O’Brien, Ling Li, Wilhelm Friess, Jacob Snow, Benjamin Herzog, Shane O’Neill
Institution: University of Maine
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,180
Awards: G2009802328, G7142138422
OpenAlex ID: W4404726480