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Durability Assessment of ETICS: Comparative Evaluation of Different Insulating Materials

Author

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  • Roberto Landolfi

    (Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, 80125 Naples, Italy)

  • Maurizio Nicolella

    (Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, 80125 Naples, Italy)

Abstract

The External Thermal Insulation Composite System (ETICS) is a common cladding technology that is widely used thanks to its well-known advantages. Despite previous studies dealing with ETICS durability in real-building case studies or involving accelerated ageing tests in climatic chambers, little progress has been made in the knowledge of the long-term durability of the system. In order to realize optimized maintenance plans for this component, the durability of the whole system, and of the most-used insulating materials for the ETICS (i.e., cork, polyurethane, rock wool, glass wool, grey EPS, and fiberfill wood), has been investigated. Based on previous experiments on ageing cycles, different climatic chambers were used to accelerate performance decay by simulating natural outdoor exposure in order to assess different physical and thermal characteristics (thermal transmittance, decrement factor, time shift, water absorption, thermal resistance, and conductivity). Recorded trends show that materials with lower thermal conductivity exhibit lower performance decay, and vice versa. The durability of the ETICS with different insulating materials (as the only variable in the different samples) was evaluated in order to quantify service life and then correctly plan maintenance interventions. Life-cycle assessment must take into account service life and durability for each material of the system. A higher durability of insulating materials allows for the execution of less maintenance interventions, with the loss of less performance over time. This study shows the physical and thermal behavior of the ETICS during its service life, comparing the differences induced by the most-used insulating materials. As a result of accelerated ageing cycles, the analyzed ETICS reveals a low grade of decay and measured performances show little degradation; for thermal conductivity, differences between the measured and the declared conductivities by technical datasheet were observed.

Suggested Citation

  • Roberto Landolfi & Maurizio Nicolella, 2022. "Durability Assessment of ETICS: Comparative Evaluation of Different Insulating Materials," Sustainability, MDPI, vol. 14(2), pages 1-25, January.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:2:p:980-:d:725791
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    References listed on IDEAS

    as
    1. Global Energy Assessment Writing Team,, 2012. "Global Energy Assessment," Cambridge Books, Cambridge University Press, number 9781107005198.
    2. Global Energy Assessment Writing Team,, 2012. "Global Energy Assessment," Cambridge Books, Cambridge University Press, number 9780521182935.
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    Cited by:

    1. António Curado & Ricardo Figueiras & Hélder Gonçalves & Filipe Sambento & Leonel J. R. Nunes, 2023. "Novel High-Performance ETICS Coatings with Cool Pigments Incorporation," Sustainability, MDPI, vol. 15(12), pages 1-13, June.
    2. Diana D’Agostino & Roberto Landolfi & Maurizio Nicolella & Francesco Minichiello, 2022. "Experimental Study on the Performance Decay of Thermal Insulation and Related Influence on Heating Energy Consumption in Buildings," Sustainability, MDPI, vol. 14(5), pages 1-19, March.

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