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Sandberg, K., Pousette, A. & Östman, L. (2018). Concept for renovation of facades with prefabricated wood elements. Skellefteå
Open this publication in new window or tab >>Concept for renovation of facades with prefabricated wood elements
2018 (English)Report (Other academic)
Abstract [en]

There is a major need of cost-effective renovations that lead to lower energy consumption and better environment. The aim of a Nordic built project was to develop a concept for industrially prefabricated insulated elements for renovation and upgrading of building envelopes. The project with participants from Sweden, Finland and Norway focused on increased prefabrication based on wood for a sustainable solution. This report presents results from the project including a Swedish pilot case with the newly developed prefabricated building system. The prefabricated wood elements are produced by Termowood in Norway. Several studies have been done about renovation of facades, including attitudes and costs, and about important properties of the element system, for example energy savings, thermal bridges, moisture risks, environmental impacts, production and installation.

The renovated building in the pilot case is a one-storey office building located in Skellefteå in the north of Sweden. Energy performance, thermal bridges, risk of moisture problems, LCA, applicability of the renovation method and assembly time were evaluated during the planning and execution of the renovation. Results from this pilot case showed that the elements were very light and easy for one person to handle at the building site. There is a great potential to further reduce the assembly time on site with improved joints and element sizes adapted to the building as well as improved batch packaging from the factory. With 100 mm insulation, the renovation gives a certain energy saving. LCA calculations showed that the reduction of climate impact due to energy savings during a service life of 50 years corresponds to the climate impact of the renovation measures. With a thicker insulation, the reduction in climate impact during the use phase of the building would increase more than the climate impact of the renovation. There is also a potential to reduce climate impact from the wall element by selecting materials produced closer to the element factory and with a greater share of renewable energy.

Place, publisher, year, edition, pages
Skellefteå: , 2018. p. 28
Series
RISE Rapport ; 2018:26
Keywords
Façade renovation, Building envelope, Prefabricated wood element, Energy efficiency, Thermal bridge, Insulation, Climate impact, Retrofitting
National Category
Building Technologies
Identifiers
urn:nbn:se:ri:diva-35137 (URN)978-91-88695-63-5 (ISBN)
Funder
Nordic Council of MinistersSwedish Energy AgencySwedish Research Council FormasEuropean Regional Development Fund (ERDF)
Available from: 2018-09-07 Created: 2018-09-07 Last updated: 2018-09-11Bibliographically approved
Norén, J., Pousette, A. & Sandberg, K. (2017). Moisture safety of tall timber facades. Borås
Open this publication in new window or tab >>Moisture safety of tall timber facades
2017 (English)Report (Other academic)
Abstract [en]

Moisture safety of tall timber facades

The main purpose of the project was to facilitate safe design of sustainable and cost-effective solutions for wood facades of high-rise buildings. Studies have been carried out of different designs of the wall itself and of different details in the wall. Direct and indirect consequences of moisture damage have been considered but mainly risk of mould or decay. Façade details with high risk were identified e.g. window and balcony, and the types of damage that may occur, and what the consequences may be. Based on this, some damage scenarios were selected where detailed solutions were analysed more carefully. Details were also compared with modified designs with improvements such as addition of a sealing strip or plate covering. LCA and LCC have been calculated for some damage scenarios to show consequences of damages and the importance of well-executed designs and details.

Place, publisher, year, edition, pages
Borås: , 2017. p. 47
Series
SP Rapport, ISSN 0284-5172 ; 2017:38
Keywords
timber facades, tall facades, moisture safety, wood moisture, damage scenarios, LCA, LCC
National Category
Engineering and Technology
Identifiers
urn:nbn:se:ri:diva-33483 (URN)
Projects
Tall Timber Facades
Funder
VINNOVA
Available from: 2018-03-09 Created: 2018-03-09 Last updated: 2018-08-20Bibliographically approved
Ohman, M. B., Sandberg, K. & Pousette, A. (2016). Dimensional stability in four different wooden facade claddings. In: : . Paper presented at World Conference on timber engineering (WCTE 2016). Vienna, Austria. 22-25 August, 2016..
Open this publication in new window or tab >>Dimensional stability in four different wooden facade claddings
2016 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

The hypothesis is that a good cladding system in wood should be characterized by a homogeneous dimensional behaviour with minimal variation between individual panel boards to minimize maintenance, i.e. repainting or, in the worst case, replacement of whole panels. Four different types of cladding panels were tested: a regular spruce panel, a quality-sorted P-marked spruce panel, a regular panel of pine heartwood and a spruce glulam panel, 50 panels of each type. The objective was to study the dimensional changes under changing moisture conditions in order to find the cladding material with the smallest possible dimensional and distortion movements. The shape stability of the panels was measured and expressed in terms of bow, spring, twist and cupping. The spruce glulam panels showed the best shape stability, proven significantly different in comparison to the other two spruce panel systems. Panels of pine heartwood showed a tendency greater dimensional stability than the spruce panels, but not enough to be considered statistically significantly different in this study.

National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-16283 (URN)
Conference
World Conference on timber engineering (WCTE 2016). Vienna, Austria. 22-25 August, 2016.
Available from: 2016-10-19 Created: 2016-10-19 Last updated: 2018-08-21Bibliographically approved
Sandberg, K. & Frände, N. (2016). Internet pages Sweden (ed.). Paper presented at .
Open this publication in new window or tab >>Internet pages Sweden
2016 (English)Report (Refereed)
Series
SP Rapport, ISSN 0284-5172 ; 2016:09
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-5303 (URN)30801 (Local ID)30801 (Archive number)30801 (OAI)
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2018-08-17Bibliographically approved
Sandberg, K., Orskaug, T. & Andersson, A. (2016). Prefabricated Wood Elements for Sustainable Renovation of Residential Building Façades. Paper presented at SBE16 Tallinn and Helsinki Conference; Build Green and Renovate Deep, 5-7 October 2016,Tallinn and Helsinki. Energy Procedia, 96, 756-767
Open this publication in new window or tab >>Prefabricated Wood Elements for Sustainable Renovation of Residential Building Façades
2016 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 96, p. 756-767Article in journal (Refereed) Published
Abstract [en]

Prefabricated elements to provide environmentally friendly, energy- and cost-efficient solutions for the building envelope have been studied. The newly developed element system has a high level of flexibility since it is possible to adjust the length of the connection rods according to the building's energy requirements and it can be mounted on timber, concrete and brick structures. Adjustability to different types of buildings structures, materials, tolerances, geometries and energy requirements makes it very applicable and efficient.

National Category
Environmental Analysis and Construction Information Technology
Identifiers
urn:nbn:se:ri:diva-26194 (URN)10.1016/j.egypro.2016.09.138 (DOI)
Conference
SBE16 Tallinn and Helsinki Conference; Build Green and Renovate Deep, 5-7 October 2016,Tallinn and Helsinki
Available from: 2016-11-22 Created: 2016-11-22 Last updated: 2018-08-17Bibliographically approved
Sandberg, K. & Frände, N. (2016). Websites for energy efficient and sustainable renovation in Sweden.
Open this publication in new window or tab >>Websites for energy efficient and sustainable renovation in Sweden
2016 (English)Report (Other academic)
Series
SP Rapport, ISSN 0284-5172 ; 2016:09
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-28220 (URN)
Available from: 2017-02-17 Created: 2017-02-17 Last updated: 2018-08-17Bibliographically approved
Pousette, A. & Sandberg, K. (2015). TallTimber Facades – utveckling av kostnadseffektiva och säkra klimatskal för träbyggande (ed.). Bygg & teknik, 107(8), 40-42
Open this publication in new window or tab >>TallTimber Facades – utveckling av kostnadseffektiva och säkra klimatskal för träbyggande
2015 (Swedish)In: Bygg & teknik, Vol. 107, no 8, p. 40-42Article in journal (Other academic) Published
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-8261 (URN)29473 (Local ID)29473 (Archive number)29473 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-21Bibliographically approved
Sandberg, K., Dahlquist, S. & Pousette, A. (2014). In-situ measurements of moisture content and temperature in wooden constructions (ed.). In: XIII International Conference on Durability of Building Materials and Components - XIII DBMC: . Paper presented at XIII International Conference on Durability of Building Materials and Components - XIII DBMC. RILEM
Open this publication in new window or tab >>In-situ measurements of moisture content and temperature in wooden constructions
2014 (English)In: XIII International Conference on Durability of Building Materials and Components - XIII DBMC, RILEM , 2014, , p. 367-374Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
RILEM, 2014. p. 367-374
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-12379 (URN)16711 (Local ID)16711 (Archive number)16711 (OAI)
Conference
XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Available from: 2016-09-13 Created: 2016-09-13 Last updated: 2018-08-21Bibliographically approved
Pousette, A. & Sandberg, K. (2014). Lagning av sprickor i limträbalkar – försök med limning av sprickor (ed.). Paper presented at .
Open this publication in new window or tab >>Lagning av sprickor i limträbalkar – försök med limning av sprickor
2014 (Swedish)Report (Refereed)
Publisher
p. 51
Series
TräCentrum Norr
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-5601 (URN)15827 (Local ID)15827 (Archive number)15827 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-20Bibliographically approved
Pousette, A., Sandberg, K., Häggström, U. & Öhman, M. (2014). Limträfasader, tekniska lösningar: Provning av dimensionsstabilitet för olika panelmaterial (ed.). Paper presented at .
Open this publication in new window or tab >>Limträfasader, tekniska lösningar: Provning av dimensionsstabilitet för olika panelmaterial
2014 (Swedish)Report (Refereed)
Publisher
p. 26
Series
TräCentrum Norr
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-5607 (URN)16323 (Local ID)16323 (Archive number)16323 (OAI)
Available from: 2016-09-08 Created: 2016-09-08 Last updated: 2018-08-20Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-0006-9425

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