Experimental evaluation of ETICS reliability factors
Abstract
The paper covers analysis of regulations and documents regarding the façade thermal insulation, methodological grounds for the system of regulations and standards and further development of national legal framework for design of insulating sheeting for buildings. This problem is actual for Ukraine where takes place a large-scale thermal modernization of existing residential and public buildings. The paper continues the series on previous scientific studies of the author with main ones given in the references. The national system of regulations and standards on the façade thermal insulation has a strong methodological structure which includes both national regulative framework and European standards. Being combined this way, the system makes it possible to assess and to design insulating sheeting for buildings according up-to-date world’s practice and with regard to climate, technologies and market of Ukraine. The paper states main principles for standard setting concerning suitability assessment of new building envelope. The standard on constructions of outward walls with facade heat-insulation with stucco facing what is called ETICS (Exterior Thermal Insulation Composite System) in Europe was developed and adopted in Ukraine as early as in 2008. The author analyses the provisions from this standard and says those need to be revised with regard to experience and knowledge gained since it is in force. The main problems that arise in the application of facade thermal insulation in new buildings are identified, the insufficiency of assessment only in terms of heat transfer resistance of the structure is proved and the need of assessment in terms of air permeability resistance of the building envelope is provided. The experimental data regarding the infiltration effect on the thermal properties of external walls are given. The consideration and evaluation of ETICS as a system or as a kit are featured, as well as regulation of criteria of ETICS thermal reliability are reviewed.
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References
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