Measurement of Moisture Transport through Perforated Vapour Barriers

Result code in IS VaVaI

RIV/68407700:21110/08:00158663 - isvavai.cz

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Measurement of Moisture Transport through Perforated Vapour Barriers

Original language description

In the European Standards EN 15026 and EN ISO 13788, moisture transport in building envelopes is assumed one dimensional. In fact, three-dimensional moisture transport occurs due to layer perforation or building assembly details. The article is focused on cases of flat roofs where the vapour barrier is perforated. Water vapour permeability measurement of different vapour barriers with different degrees of perforation is done by the wet-cup method. Results are presented. A significant increase of moisture transport is found through vapour barriers which are perforated. A note on setting the apparatus to measure materials with very high water vapour resistance factor is presented. Finally, based on the results we discussed new recommendations to design more efficient flat roofs and avoid future failures.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JN - Civil engineering

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

The Nordic Journal of Building Physics

ISSN

1402-5728

e-ISSN

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Volume of the periodical

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Issue of the periodical within the volume

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Country of publishing house

SE - SWEDEN

Number of pages

8

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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