Quality materials for the cladding of facades: the definitive solution

The materials used when rehabilitating a facade are very important, since the future of the house will depend on them. This fact is reflected in an event that took place on June 14, 2017, in a residential building called Torre Grenfell, which had been thermally rehabilitated in 2016.

The building caught fire due to a short circuit and the exterior cladding of the building acted in its rapid propagation. In this way, the experts questioned the composition of the coating that contained polyethylene, which would explain the rapidity with which the fire spread. This fact meant a turning point in the reality of the rehabilitation activity since it has been the subject of many debates to this day.

How to solve it?

It is important to note that currently the Spanish regulations lack the level of detail and specifications of other European countries.

Thus, there is a common concern about the safety in the building, and that a harmful material could cause damage to the facade itself, to the upper and lower floors and also to neighboring buildings.

Before this event, a series of proposals have been proposed to try to recover the priority role in the rehabilitation of buildings:

- The facades of buildings with three or more floors must be insulated or covered with Euroclass A materials or solutions, with smoke opacity s1 and droplet production d0. That is, avoid combustible materials.

- Prohibit the use of combustible materials in those hidden spaces (interior of walls, walls) through which electrical conduits pass.

- Require that the materials used be subjected to the own tests that certify their behavior in front of the fire, independently of the solutions in which they are integrated.

- Improve evaluation systems and behavior analysis. The current ones are far from being assimilable to what happens in a real fire on the facade of a building or on ventilated facades.

Towoards a better future

Based on the fact that the A1 materials are not combustible and the A2 do not contribute to the fire or contribute to the development of the fire and do not cause flashover, Tecnifuego has reached the conclusion that A2 materials should be used in high-rise buildings. . On the other hand, the demand is placed in A1 in the rehabilitation of neighborhoods and narrow streets that do not allow access to firefighters regardless of height.

From Sistema Masa, we demand a modification of regulations that consider safety when rehabilitating façade cladding always trying to use the best materials and promote responsible construction. Likewise, the knowledge of the behavior and the classification of the products in final application of use provide greater security to the market.


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