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Buildings 2016, 6(2), 24; doi:10.3390/buildings6020024

Norwegian Pitched Roof Defects

1
Department of Civil and Transport Engineering, Norwegian University of Science and Technology (NTNU), NO-7491 Trondheim, Norway
2
Department of Materials and Structures, SINTEF Building and Infrastructure, NO-7465 Trondheim, Norway
*
Author to whom correspondence should be addressed.
Academic Editor: Francisco López Almansa
Received: 1 April 2016 / Revised: 1 June 2016 / Accepted: 16 June 2016 / Published: 21 June 2016
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Abstract

The building constructions investigated in this work are pitched wooden roofs with exterior vertical drainpipes and wooden load-bearing system. The aim of this research is to further investigate the building defects of pitched wooden roofs and obtain an overview of typical roof defects. The work involves an analysis of the building defect archive from the research institute SINTEF Building and Infrastructure. The findings from the SINTEF archive show that moisture is a dominant exposure factor, especially in roof constructions. In pitched wooden roofs, more than half of the defects are caused by deficiencies in design, materials, or workmanship, where these deficiencies allow moisture from precipitation or indoor moisture into the structure. Hence, it is important to increase the focus on robust and durable solutions to avoid defects both from exterior and interior moisture sources in pitched wooden roofs. Proper design of interior ventilation and vapour retarders seem to be the main ways to control entry from interior moisture sources into attic and roof spaces. View Full-Text
Keywords: wood; roof; pitched; climate; robustness; moisture wood; roof; pitched; climate; robustness; moisture
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Gullbrekken, L.; Kvande, T.; Jelle, B.P.; Time, B. Norwegian Pitched Roof Defects. Buildings 2016, 6, 24.

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