Author(s): P.B. Strandberg-de Bruijn, K. Balksten, A. Donarelli
Paper category: Proceedings
Book title: Proceedings of the 2nd International Conference
on Bio-Based Building Materials
Editor(s): Sofiane AMZIANE, Mohammed SONEBI and Karine CHARLET
e-ISBN: 978-2-35158-192-6
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 671-675
Total Pages: 5
Language : English

Abstract: In this multidisciplinary project lime-hemp is studied as a thermal insulating material for the
renovation of historic timber and brick buildings*). Focus is on buildings in the historic city of
Visby on the Swedish island of Gotland in the Baltic sea. Many historic buildings in Visby have
over the past decades been thermally insulated with materials such as mineral wools and
polystyrene. Due to this, damage caused by moisture and microbial growth has increased. As a
consequence, cultural and historical values have been damaged. Lime-hemp is a sustainable
building material that consists of hemp shiv and building limes. It works differently than
conventional insulating materials; in addition to good thermal insulation properties, it also has
good thermal mass and moisture buffering capacity. This project will study the durability of the
lime-hemp, especially microbial growth and moisture problems, and opportunities for renovation

of historic buildings, while creating a good indoor climate and preserving historical values. Lab-
studies as well as full-scale studies are conducted. The aim of the project is to sustainably

improve energy efficiency while preserving historical values, without durability problems.
*) The project started in September 2016 and results are not expected until earliest autumn
2017. The article will therefore give an outline of the project and some preliminary findings.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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