Even though the appropriate thickness of each coat is stated in the European technical approval guideline for commercially available ETICS (ETAG 004 2000), lower values are often specified at the design stage, especially for the base coat, which leads to an overly thin coat (1 mm).
Figure 14 shows that 39% of the anomalies in ETICS can be prevented by proper design, application and choice of materials, especially the materials rupture anomalies and the facade flatness anomalies.
Even though this is one of the most efficient ways to evaluate ETICS, enabling the origin of the error to be checked (application and/or design), the use of probing is only recommended when it is considered essential to the complete diagnosis of an anomaly.
This technique was considered when the ETICS needed to be separated from other construction elements or when the joints between plates were visible, where there was a possibility of the insulation material becoming dimensionally unstable and the creation of an expansion joint could solve the problem.
There are pathology, diagnosis and repair systems for a variety of construction elements, but in the literature survey performed none was found concerning the evaluation of ETICS.
That was the main objective of this research, aiming at monitoring the performance of ETICS on walls.
2013) were validated and calibrated after field work and statistical post-treatment of the data collected on 146 facades where ETICS had been applied.
The commonest anomalies of ETICS in walls (approximately once every two cases) are biological growth, other colour changes and runoff marks, all included in the colour/aesthetic anomalies group; flatness and materials rupture anomalies come second and third respectively (approximately a quarter of the occurrences each);
Around two out of five of the anomalies in ETICS can be prevented by proper design, application and choice of materials, which shows the importance of these stages in the service life of ETICS;
Inspection and diagnosis system of ETICS in walls, Construction and Building Materials 47: 1257-1267.