Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes

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

doi:10.1007/978-981-97-8305-2_69

Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes

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 proceeding › Article in proceeding › Research › peer-review

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Abstract

Moisture-safe retrofitting and energy optimization of facades in existing buildings may be challenging, especially for buildings with preservation-worthy or historical facades. Internal insulation changes the hygrothermal conditions of the original wall and may cause several problems, like biological growth and masonry deterioration. This paper explores the use of moisture-adaptive membranes as an additional moisture control measure for safe retrofitting with internal insulation. The results are based on WUFI® Pro simulations. Parameters like minimal and maximal vapour diffusion resistance, relative humidity (RH) range at which the membrane is most diffusion-open and -tight, indoor humidity class, orientation, and insulation type are varied and evaluated with a theoretical mould growth model. Results indicate that the adaptive membrane should already be highly diffusion-open at around 75% RH and highly diffusion-tight in periods with low RH (up to around 40%). Results indicate that this would ensure a moisture-safe construction in humidity classes 2–4 using mineral wool. When using organic insulation materials, there might be a risk in humidity class 4.

Original language	English
Title of host publication	Multiphysics and Multiscale Building Physics : Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 1: Moisture and Materials
Editors	Umberto Berardi
Number of pages	6
Publisher	Springer
Publication date	Dec 2024
Pages	488-494
ISBN (Print)	978-981-97-8304-5, 978-981-97-8307-6
ISBN (Electronic)	978-981-97-8305-2
DOIs	https://doi.org/10.1007/978-981-97-8305-2_69
Publication status	Published - Dec 2024
Event	The 9th conference of the International Association of Building Physics - Toronto Metropolitan University, Toronto, Canada Duration: 25 Jul 2024 → 27 Jul 2024 https://www.ibpc2024.org/

Conference

Conference	The 9th conference of the International Association of Building Physics
Location	Toronto Metropolitan University
Country/Territory	Canada
City	Toronto
Period	25/07/2024 → 27/07/2024
Internet address	https://www.ibpc2024.org/

Series	Lecture Notes in Civil Engineering
Volume	LNCE 552
ISSN	2366-2557

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Moisture-proof energy renovation of conservation-worthy exterior masonry walls
Peuhkuri, R. H. (Project Manager), de Place Hansen, E. J. (Project Participant), Soulios, V. (Project Participant), Hansen, T. K. (Project Participant), Jensen, N. F. (Project Participant), Møller, E. B. (Project Participant), Pagoni, P. (Project Participant), Ørsager, M. (Project Participant) & Møller, P. (Project Participant)
01/10/2017 → 30/06/2024
Project: Research

Cite this

Jensen, N. F., Peuhkuri, R. H., de Place Hansen, E. J., Pagoni, P., & Møller, E. (2024). Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes. In U. Berardi (Ed.), Multiphysics and Multiscale Building Physics: Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 1: Moisture and Materials (pp. 488-494). Springer. https://doi.org/10.1007/978-981-97-8305-2_69

Jensen, Nickolaj Feldt ; Peuhkuri, Ruut Hannele ; de Place Hansen, Ernst Jan et al. / Enhancing Performance of Internally Insulated Solid Masonry Wall : Use of Moisture Adaptive Membranes. Multiphysics and Multiscale Building Physics: Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 1: Moisture and Materials. editor / Umberto Berardi. Springer, 2024. pp. 488-494 (Lecture Notes in Civil Engineering, Vol. LNCE 552).

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title = "Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes",

abstract = "Moisture-safe retrofitting and energy optimization of facades in existing buildings may be challenging, especially for buildings with preservation-worthy or historical facades. Internal insulation changes the hygrothermal conditions of the original wall and may cause several problems, like biological growth and masonry deterioration. This paper explores the use of moisture-adaptive membranes as an additional moisture control measure for safe retrofitting with internal insulation. The results are based on WUFI{\textregistered} Pro simulations. Parameters like minimal and maximal vapour diffusion resistance, relative humidity (RH) range at which the membrane is most diffusion-open and -tight, indoor humidity class, orientation, and insulation type are varied and evaluated with a theoretical mould growth model. Results indicate that the adaptive membrane should already be highly diffusion-open at around 75\% RH and highly diffusion-tight in periods with low RH (up to around 40\%). Results indicate that this would ensure a moisture-safe construction in humidity classes 2–4 using mineral wool. When using organic insulation materials, there might be a risk in humidity class 4.",

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author = "Jensen, \{Nickolaj Feldt\} and Peuhkuri, \{Ruut Hannele\} and \{de Place Hansen\}, \{Ernst Jan\} and Panagiota Pagoni and Eva M{\o}ller",

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doi = "10.1007/978-981-97-8305-2\_69",

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booktitle = "Multiphysics and Multiscale Building Physics",

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Jensen, NF , Peuhkuri, RH , de Place Hansen, EJ, Pagoni, P & Møller, E 2024, Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes. in U Berardi (ed.), Multiphysics and Multiscale Building Physics: Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 1: Moisture and Materials. Springer, Lecture Notes in Civil Engineering, vol. LNCE 552, pp. 488-494, The 9th conference of the International Association of Building Physics, Toronto, Canada, 25/07/2024. https://doi.org/10.1007/978-981-97-8305-2_69

Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes. / Jensen, Nickolaj Feldt ; Peuhkuri, Ruut Hannele ; de Place Hansen, Ernst Jan et al.
Multiphysics and Multiscale Building Physics: Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 1: Moisture and Materials. ed. / Umberto Berardi. Springer, 2024. p. 488-494 (Lecture Notes in Civil Engineering, Vol. LNCE 552).

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Enhancing Performance of Internally Insulated Solid Masonry Wall

T2 - The 9th conference of the International Association of Building Physics

AU - Jensen, Nickolaj Feldt

AU - Peuhkuri, Ruut Hannele

AU - de Place Hansen, Ernst Jan

AU - Pagoni, Panagiota

AU - Møller, Eva

PY - 2024/12

Y1 - 2024/12

N2 - Moisture-safe retrofitting and energy optimization of facades in existing buildings may be challenging, especially for buildings with preservation-worthy or historical facades. Internal insulation changes the hygrothermal conditions of the original wall and may cause several problems, like biological growth and masonry deterioration. This paper explores the use of moisture-adaptive membranes as an additional moisture control measure for safe retrofitting with internal insulation. The results are based on WUFI® Pro simulations. Parameters like minimal and maximal vapour diffusion resistance, relative humidity (RH) range at which the membrane is most diffusion-open and -tight, indoor humidity class, orientation, and insulation type are varied and evaluated with a theoretical mould growth model. Results indicate that the adaptive membrane should already be highly diffusion-open at around 75% RH and highly diffusion-tight in periods with low RH (up to around 40%). Results indicate that this would ensure a moisture-safe construction in humidity classes 2–4 using mineral wool. When using organic insulation materials, there might be a risk in humidity class 4.

AB - Moisture-safe retrofitting and energy optimization of facades in existing buildings may be challenging, especially for buildings with preservation-worthy or historical facades. Internal insulation changes the hygrothermal conditions of the original wall and may cause several problems, like biological growth and masonry deterioration. This paper explores the use of moisture-adaptive membranes as an additional moisture control measure for safe retrofitting with internal insulation. The results are based on WUFI® Pro simulations. Parameters like minimal and maximal vapour diffusion resistance, relative humidity (RH) range at which the membrane is most diffusion-open and -tight, indoor humidity class, orientation, and insulation type are varied and evaluated with a theoretical mould growth model. Results indicate that the adaptive membrane should already be highly diffusion-open at around 75% RH and highly diffusion-tight in periods with low RH (up to around 40%). Results indicate that this would ensure a moisture-safe construction in humidity classes 2–4 using mineral wool. When using organic insulation materials, there might be a risk in humidity class 4.

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Jensen NF , Peuhkuri RH , de Place Hansen EJ, Pagoni P, Møller E. Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes. In Berardi U, editor, Multiphysics and Multiscale Building Physics: Proceedings of the 9th International Building Physics Conference (IBPC 2024) Volume 1: Moisture and Materials. Springer. 2024. p. 488-494. (Lecture Notes in Civil Engineering, Vol. LNCE 552). doi: 10.1007/978-981-97-8305-2_69

Enhancing Performance of Internally Insulated Solid Masonry Wall: Use of Moisture Adaptive Membranes

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Moisture-proof energy renovation of conservation-worthy exterior masonry walls

Cite this