These results indicate that the thermal deformation of the wall surface caused by the temperature difference in the vertical direction is two to four times of the deformation in the horizontal direction; in the finishing coat of the large-scale ETICS, the temperature gradient generated by the heat blocking action of the insulating layer results in an inconsistent overall hygrothermal deformation in different directions.
Therefore, after 72 hygrothermal cycles, the degradation of the ETICS is not significant, suggesting that setting the number of hygrothermal cycles at 80 in ETAG 004  is appropriate.
finishing coat, insulating layer, and the bonding layer) of the ETICS GHB under the hygrothermal cycles were investigated.
Founti, "Thermal performance of a building envelope incorporating ETICS with vacuum insulation panels and EPS," Energy and Buildings, vol.
Silva, "Modelling the degradation and service life of ETICS in external walls," Materials and Structures, vol.
Battaglia, "Durability evaluation of ETICS: analysis of failures case studies and heat and moisture transfer simulations to assess the frequency of critical events," in Proceedings of the 4th Portuguese Conference on Mortars and ETICS, Coimbra, Portugal, 2012, http://www.
ETICS are a relatively novel technology in the Portuguese construction sector, having only really expanded in the 1990s.
The inspection plan consisted of a set of visits to inspect facades with ETICS cladding and use visual criteria to identify the anomalies and their most probable causes.
Based on the data collected by visual inspection when the system is validated, a statistical analysis of the pathological phenomena that occur in ETICS insulation systems was performed to enable assessment of the parameters the system is most sensitive to, in order to minimise the degradation process.
Another paper on Portuguese ETICS (Silva, Falorca 2009) corroborates these results for the prevalence of colour changes over other anomalies.
However, according to French statistics based on insurance companies' reports relative to 211 anomaly examples in ETICS between 1979 and 1985 (Freitas 2002), the incidence of loss of adherence of the whole system was 12% and of partial adherence loss was also 12%, indicating much higher incidence than found in this study, even though the French study is much older (ETICS' reliability has improved over the years).