The effect of interior paint treatments on the hygrothermal conditions in internally insulated solid masonry walls

Nickolaj Feldt Jensen*, Ruut Hannele Peuhkuri, Ernst Jan de Place Hansen, Panagiota Pagoni, Eva Møller

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Over the last 10 years there has been an increased focus on how internal insulation of the existing building stock affects the hygrothermal performance of the constructions. This study investigates the hygrothermal performance and risk of mould growth in critical locations in internally insulated solid masonry walls when different types of interior paint treatment are applied. The study comprises two parts: field measurements from a large-scale experimental set-up, and a WUFI® Pro simulation study of the effect of paint treatments on different types of internal insulation systems. The focus is on diffusion-open and capillary active insulation systems (autoclaved aerated concrete and calcium silicate). Test walls were applied either with the recommended diffusion-open paint or a widely used acrylic paint. Measurements indicated that the use of common acrylic wall paint does not affect the hygrothermal conditions in internally insulated solid masonry walls considerably, compared with walls painted with the recommended diffusion-open paint. The simulation study did however indicate that in certain situations the use of acrylic paint would be beneficial, while in others diffusion-open paint was preferred.

Original languageEnglish
Title of host publicationMultiphysics and Multiscale Building Physics : Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 3: Building Systems and HVAC Technologies
EditorsUmberto Berardi
Number of pages7
PublisherSpringer
Publication dateDec 2024
Pages438-444
ISBN (Print)978-981-97-8312-0, 978-981-97-8315-1
ISBN (Electronic)978-981-97-8313-7
DOIs
Publication statusPublished - Dec 2024
EventThe 9th conference of the International Association of Building Physics - Toronto Metropolitan University, Toronto, Canada
Duration: 25 Jul 202427 Jul 2024
https://www.ibpc2024.org/

Conference

ConferenceThe 9th conference of the International Association of Building Physics
LocationToronto Metropolitan University
Country/TerritoryCanada
CityToronto
Period25/07/202427/07/2024
Internet address
SeriesLecture Notes in Civil Engineering
VolumeLNCE 554
ISSN2366-2557

Keywords

  • Effect of interior paint
  • Internal insulation
  • Mould risk

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