Detachment of the thermal coating: why it happens and what to do

In recent years it is increasingly common to see, especially in the winter season, the delamination of the thermal coating various types of buildings. This is a very dangerous event, as it can endanger not only the integrity of the structures, but also, above all, the safety of the people nearby. Below is all the information in detail on why thermal coating delamination can occur what should be done when this happens.

What is thermal insulation or external insulation?

Thermal coating – or external insulation – is an insulation system based on the application of several layers insulating material in the walls of a building. Utilizing a system of this type is possible reducing heat dissipation in the colder months and its penetration from the outside in the warmer ones: the result is not only greater well-being, but also significant savings in energy and economy. In addition, by reducing consumption, CO2 emissions are also reduced, with consequent benefits for the environment. It is not enough to use the coat for thermal insulation at home, but in this regard it is one of the main factors to consider.

There are several types of thermal coatingamong which we distinguish two main categories:

  • The internal thermal coating it is based on the application of specific insulating panels on the inner side of the walls: this is the fastest and most economical solution and is generally widespread in large urban centers. The disadvantages of this system are mainly the difficulty of installation and an inevitable reduction of the interior spaces of the house.
  • The external thermal coating Instead, it is mainly applied to small buildings such as villas or apartment buildings. It is highly effective not only in allowing long-term thermal insulation and acoustic insulation (for a minimum of 25 years and a maximum of 50), but also in preventing the formation of mold and cracks on the exterior of the building.

Here you are what elements does it consist of? external insulation according to the European ETICS standard (Complex External Thermal Insulation System):

  • Adhesive mortar
  • Real insulating panel
  • Anchor bolts
  • Basic plaster
  • Reinforcement layer (armor)
  • Finishing plaster
  • Any accessories.

All possible causes of thermal coating detachment

There are many factors that can contribute to the delamination of a thermal coating, but the most decisive can generally be traced to a incorrect placement of materials insulators and wall fixings. In this sense, the aforementioned play a particularly important role anchor bolts and glue: if applied in insufficient quantities or incorrectly, not only the effectiveness of the insulation system will be affected, but also its structural integrity.

Also a poor choice of materials to use can cause the thermal insulation to fail over time: each element must therefore be carefully selected based on the structural characteristics of the specific building, as well as the geographical and climatic characteristics of the area in which it is located. For this reason it is necessary to rely on one specialized company who carries out the installation with maximum precision and carefully assessing the situation.

After the installation is completed it is equally important to perform the correct one maintenance, to make the thermal coating last longer and detect any signs of wear that could appear after some time. If this aspect is neglected, there is a risk that more and more serious damage will be caused, which will require more and more drastic and expensive interventions.

What to do in case of detachment of the thermal coating

In the event that thermal coating delamination occurs, the main advice is once again contact professionals of the industry: they will be the ones to confidently determine the cause and extent of the damage, using specialized tools. Only in this way will it be possible – and absolutely safe – for the procedures to proceed targeted repairs; in more serious cases, however, it may be necessary to completely replace the thermal insulation.

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