A Numerical Study of Methods to Improve Moisture Safety of Ventilated Wooden Roofs

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Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2024-02-19

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Mcode

Degree programme

Language

en

Pages

12

Series

Journal of Sustainable Architecture and Civil Engineering, Volume 34, issue 1, pp. 101-112

Abstract

The hygrothermal performance of highly insulated, prefabricated wooden roof structures is likely to deteriorate due to the low heat flux to the ventilation cavity. This article evaluates the possibility to improve the moisture safety of such roofs in a Nordic climate by using different control methods for the ventilation rate of the roof and by using thermal insulation above the roof sheathing. The results support the use of adaptive roof ventilation as it decreases the probability of mould growth in the roof. The use of thermal insulation above roof sheathing decreases the probability of mould growth only slightly in a roof with elevated amount of built-in moisture.

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Publisher Copyright: © 2024, Kauno Technologijos Universitetas. All rights reserved.

Keywords

controlled ventilation, hygrothermal performance, Nordic climate, wooden roof

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Citation

Viljanen, K & Felius, L 2024, ' A Numerical Study of Methods to Improve Moisture Safety of Ventilated Wooden Roofs ', Journal of Sustainable Architecture and Civil Engineering, vol. 34, no. 1, pp. 101-112 . https://doi.org/10.5755/j01.sace.34.1.35512