The monitoring of wall moisture in a property retrofitted with Internal Wall Insulation

Martel, Tim; Rirsch, Eric; Simmonds, Andrew; Walker, C. Todd

doi:10.1016/j.cscm.2021.e00520

Cited by 5 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Case Studies of using HPT on real buildings or full-scale assemblies include (de Place Hansen et al, 2021;Lubelli et al, 2007;Lubelli and van Hees, 2011;Martel et al, 2021;Sauder, 1999;UCL and BRE, 2021a;van Hees, 1998b;Vereecken et al, 2020).…”

Section: Simulation Workmentioning

confidence: 99%

“…HPT may help reduce moisture risks in masonry walls by reducing the amount of rain absorbed; they have been deployed on walls with Cavity Wall Insulation (CWI) (UCL and BRE, 2021a) , Internal Wall Insulation (IWI) (de Place Hansen et al, 2021;Martel et al, 2021;Soulios et al, 2019;Vereecken et al, 2020), as well as in the absence of insulation to e.g. arrest/impede weathering in stone monuments and to prevent graffiti.…”

Section: Introduction and Contextmentioning

confidence: 99%

See 1 more Smart Citation

An overview of hydrophobic treatments and their application with Internal Wall Insulation

Cambray

Marincioni

Altamirano

2022

Preprint

View full text Add to dashboard Cite

Hydrophobic (or water-repellent) treatments have been proposed to mitigate moisture risks associated with Internal Wall Insulation when applied to solid masonry walls. This can reduce risks associated with moisture accumulation within the structure such as mould growth or the deterioration of joist ends and other embedded timber. Where treatments perform well there is a net reduction of moisture content and risk. However, such treatments slow down drying processes, and therefore may result in a net increase in moisture if the treatment is bypassed by e.g. cracks. Some treatments have may lead to damage to external masonry surfaces in some situations. Freeze-thaw and salt crystallisation are the two main causes Hygrothermal simulations may give some indication of risks but techniques to assess the risk of surface damage are either simplistic, impractical outside of the research environment, or both. This paper reviews the state of the art of assessing and predicting the risk of surface damage associated with surface treatments.

show abstract

Section: Simulation Workmentioning

confidence: 99%

Section: Introduction and Contextmentioning

confidence: 99%

An overview of hydrophobic treatments and their application with Internal Wall Insulation

Cambray

Marincioni

Altamirano

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Hence, an interior insulated wall becomes more sensitive to moisture sources. This has instigated research focus on both how to protect from moisture sources and how to improve drying conditions, e.g., [3][4][5][6][7]. Problematic moisture sources are driving rain [3,8], leaks in the building envelope [4], rising moisture from the ground [9], and indoor humid air condensing in the wall where it meets the saturation temperature [6].…”

Section: Introduction 1contextmentioning

confidence: 99%

Hygrothermal Simulation of Interior Insulated Brick Wall—Perspectives on Uncertainty and Sensitivity

2023

View full text Add to dashboard Cite

Energy retrofit of existing masonry buildings has become attractive to meet demands for reduction in energy consumption. Retrofit may, however, introduce moisture risk that needs to be assessed. Hygrothermal simulation analysis is often conducted in this respect. Nevertheless, hygrothermal simulation of interior insulated bare brick masonry exposed to driving rain can be challenging due to the many aspects involved that determine heat- and moisture-transport behavior, and which should be addressed by an applied model. The present study highlights uncertainty encountered when establishing a hygrothermal simulation model. Furthermore, different modeling choices or simplifications are studied to determine impact on results. As a check of realism, results of 2D simulations are compared to results of a previous laboratory experiment of masonry wall segments subjected to severe rain wetting and subsequent drying. Rain absorption is modeled conservatively, attempting simulation results to envelope experiment results. Conservative results were not achieved for a relative humidity sensor placed on the masonry interior without inclusion of a “leaky” mortar joint. Simultaneously, the conservative approach underestimated drying experienced by the relative humidity sensor in two of three experiment wall segments. Regarding beam-end moisture content, the modeling approach conservatively enveloped experiment results in 3D but not in 2D.

show abstract

“…Currently, there are three main forms of insulation systems for exterior walls in buildings: external wall insulation (Rodrigues et al, 2018;Axaopoulos et al, 2019;Kon and Caner, 2022), internal wall insulation (Marincioni et al, 2018;Xu et al, 2019;Martel et al, 2021), and sandwiched wall insulation (Hou et al, 2019b;Qiao et al, 2020;Shin and Kim, 2020). Among the three types of insulation systems, sandwiched wall is popular in cold regions of Europe and North America.…”

mentioning

confidence: 99%

Weathering resistance of novel sustainable prefabricated thermal insulation wall

Wang,

Pang,

et al. 2024

Front. Mater.

View full text Add to dashboard Cite

External walls, serving as the primary medium for heat exchange between the building and the external environment, has its thermal loss comprising the largest proportion of building energy consumption. Therefore, enhancing the thermal insulation capacity of the wall is of great significance in reducing building energy consumption. In this paper, a novel sustainable prefabricated expanded polystyrene (EPS) thermal insulation wall panel with irregular column frame structures was developed. And weathering tests combined with finite element simulations were conducted to investigate its weathering performance and degradation patterns. The results revealed that In the weathering test, the panel surfaces did not exhibit apparent water seepage cracks, powdering, hollowing, peeling, etc. There was no occurrence of facing brick detachment or damage. The outer surface concrete of the wall panel experienced resistance during normal thermal expansion and contraction, generating compressive stress during expansion and tensile stress when contracted. In addition, the bond strength of the specimens decreased by 8.1% after the thermal-rain cycles, 5.1% after the thermal-cold cycles, and 12.1% after the freeze-thaw cycles. In the numerical simulations, the temperature stress at various positions on the concrete wall had a noticeable mutual restraining effect on the force deformation of the nearby concrete. There was a significant risk of cracking in the middle and around the opening, particularly in the lower part of the wall panel. This study serves as a basis for the degradation analyses and optimization design of the sandwich insulation wall panels for sustainability.

show abstract

The monitoring of wall moisture in a property retrofitted with Internal Wall Insulation

Cited by 5 publications

References 10 publications

An overview of hydrophobic treatments and their application with Internal Wall Insulation

An overview of hydrophobic treatments and their application with Internal Wall Insulation

Hygrothermal Simulation of Interior Insulated Brick Wall—Perspectives on Uncertainty and Sensitivity

Weathering resistance of novel sustainable prefabricated thermal insulation wall

Contact Info

Product

Resources

About