Usually present as a uniformly distributed layer of mortar on the wall (plaster mortar with a thickness of 1-2 cm.)


Ventilated Facades – Supporting structure

The functional elements that make up the ventilated facade are:


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Layer wall bracket
Monolayer type may be composed of a single stratification of material, or it may be of a multilayer, essentially consisting of more than a stratification of materials. Depending on the type of material used, the support layer has a determining influence on the behavior of the system, because of the different coefficients of deformation that are subject to the elements that compose it.

Adjustment layer
Usually present as a uniformly distributed layer of mortar on the wall (plaster mortar with a thickness of 1-2 cm.) With the function of reducing surface irregularities in the layer below. In fact, to allow proper application of the insulating layer on the support layer has to be carried out a careful analysis of its surface from the viewpoint of geometric and physical.

Insulating layer
Commonly used insulating panels for ventilated facades have a variable thickness from 3 to 8 cm. and are applied directly to the wall bracket using queues and / or mechanical elements. The choice of set materials depends on the condition of the building. The mechanical set is particularly suitable in the event that takes place on reconstruction of facades, since the adhesive is unable to guarantee a perfect adhesion on irregular surfaces and degraded by atmospheric agents. In any case, if blocks are used expansive set, it will have to be careful with the use of plastic material to avoid thermal bridges. In the presence of new buildings can be applied indifferently the two methods of anchoring.

Ventilation Layer
The ventilation layer located a gap between the insulation and the outer coating of variable thickness from 3 to 5 cm. The formation of this layer is important to ensure good air circulation and, especially, can cause chimney effect (air throw up hot).

The fundamental task of the gap is, therefore, to allow an upward movement of air, providing thermal comfort. Clearly the function of this layer depends on the conditions of circulation of air inside, so we must avoid the presence of any impediments that limit the flow (bottlenecks due to the presence of structural elements or anchoring of surface irregularities insulating layer and the coating material, etc.).. In addition, to ensure natural ventilation within the interstitium, they must always be provided vents located in the appropriate section below and on top of a building.

If all these conditions are respected, the presence of air gap acts as undoubted benefits:
01. evaporation of the amount of water deposited on the walls during the construction phase;02. evacuation of water vapor from the inside in the winter;
03. the cooling of the envelope construction in the summer period because of the upward movement of air;

04. attenuates the heat flow in the summer extends from the exterior of a building to attack the interior;

05. slows heat loss from the inside out due to the absence of thermal bridges.

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