Abstract
In the paper the results of an experimental program intended to determine factors influencing the impact resistance of the External Thermal Insulation Composite Systems (ETICS) were presented. For the research the systems based on polystyrene have been chosen. The insulation material was faced with a rendering consisting of base coat reinforced with standard or armored glass fibre mesh and silicone or silicone-silicate binders as finishing coats. The influence of various renderings components was evaluated with respect to resistance to hard body impact and resistance to hail. The test results were discussed in the context of the possible impact level on ETICS in use.
Highlights
External Thermal Insulation Composite Systems (ETICS) is one of the most popular method of improving the energy efficiency and refurbishing the façades of new and existing buildings, that has been widely used in Poland and Europe for last 60 years [1]
ETICS comprises a set of products including thermal insulation material – usually these are expanded polystyrene or mineral wool boards, adhesive intended for the attachment of the thermal insulation material to the substrate, anchors, rendering system consisting of reinforcement – standard or armored glass fibre mesh, base coat and finishing coat
The analysis of the results of the hard body impact resistance tests on the ETICS made with the use of expanded polystyrene (EPS) TR 100 and a single layer of glass fibre mesh 150 (Fig. 1) indicated that in the solutions where the mineral base coat was used, the type of finishing coat was the factor determining the resistance
Summary
External Thermal Insulation Composite Systems (ETICS) is one of the most popular method of improving the energy efficiency and refurbishing the façades of new and existing buildings, that has been widely used in Poland and Europe for last 60 years [1]. ETICS comprises a set of products including thermal insulation material – usually these are expanded polystyrene or mineral wool boards, adhesive intended for the attachment of the thermal insulation material to the substrate, anchors (if applied), rendering system consisting of reinforcement – standard or armored glass fibre mesh, base coat and finishing coat. Even minor mechanical damage to the finishing coat makes it easier for the water to infiltrate the enclosure and lead to moisture accumulation within the façade It speeds up the process of its degradation and any possible accumulation of moisture in the thermal insulation coat reduces the effectiveness of the thermal insulation
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