José Palaces, Shows: “If for real we want to consume less power, have to optimise the envolvente”

The window is a crucial element in the envolvente of any building, to the hour to measure his energetic efficiency. The wooden windows are ideal to contribute to reach the standard Passivhaus of passive house or energetic consumption almost invalid.

Like this expressesed yesterday José Palaces Monteagudo, manager of the Spanish Association of Manufacturers of wooden and Mixed Windows Wood-Aluminium (Shows), in the technical day The window in the Passivhaus. Solutions for rehabilitation, celebrated yesterday in the Nursery of Companies of Vicálvaro, promoted by the Platform of Edificación Passivhaus (PEP), and organised by Show, Asparavel and Vand architecture, in collaboration with the University Rey Juan Carlos and Madrid Undertakes.

“Incomprensiblemente, to the hour to tackle and prevail the rehabilitation of the buildings, the administrations leave to a side the passive concept of the own envolvente or limitation of his energetic demand, in favour of thermal sensors installations that reduce the consumption of primary power of a building. For the time being, we do not want to consume of another way. If for real we want to consume less power, have to optimise the envolvente”, affirmed rotundo the manager of Shows.

Although they take part a lot of agents, in the envolvente of a building is leading the window. “In himself same, the window is an enormous thermal sensors bridge”, considers José Palaces. So that a window contribute to reach the standard Passivhaus, has to incidir in several appearances:

it Has to be very very designed and manufactured, as well as properly installed, to be tight and adapt perfectly to the rest of the façade.

it Proceeds to avoid condensations, by reasons of hygiene, combining properly the necessary variables of hermeticidad and permeability. In this point, the speaker stood out the paper of the designated “intercalarlo” of the closing.

His capacity of isolation thermal sensors is crucial. What translates in innovation and development around the design of the freamers and profiles, in the quality of the glasses and, once again, in a correct installation. José Palaces exposed numerous examples of profiles optimised by means of cameras and insulation of diverse ways and with distinct materials, to dissipate the power in his interior and increase his thermal sensors efficiency.

Obviously, the end last is the comfort of the user of the habitáculo, controlling the temperature in all the space, and avoiding the stratification of the temperature in his interior (phenomenon “cold feet”) like consequence of the fault of isolation in the windows.

The design of the window has to serve so that the building register a net energetic balance, this is, that the losses that produce through the windows, win also through the same windows.

No for reiterating it leaves to be true: Of at all it serves to have of a glorious window, if it does not install properly. It shows account in his managerial board with a signature of reference in this field: Soudal.

Manuel Medina, responsible of development of business in Soudal Quimica, S.L. It spoke to the assistants to the day on the sealed correct of the window to the gap; apt for the optimisation of the thermal sensors performance of the passive window.

“Through the window can find thermal sensors bridges and fault of estanqueidad, what comports all type of infiltrations in the habitáculo and losses of power of until 25% and also of comfort, by condensations, acoustic problems and circulation of air no wished. Even they lose efficiency the systems of ventilation -exposed Manuel Medina-. However, a correct installation of the closing deletes or reduces the thermal sensors bridges and infiltrations and allows to reduce the demand of power and increase the inner comfort”.

The speaker exposed the provision of the Soudal Window System and explained the different phases of the sealed of a window, with the aim to obtain a thermal sensors and acoustic insulation durable, estanqueidad to the air and to the steam and strengthen the resistance of the closing to the intemperie. “The foams of polyurethane and stravel of polyurethane expansionary car provide us isolation more estanqueidad. By his part, contribute to reinforce the estanqueidad and also to control the diffusion of the steam the membranes of estanqueidad (for interior and external) and the already quoted stravel of polyurethane expansionary car. The adhesive for membranes and selladores complement to the mentioned material to reach the results wished”.

Manuel Medina underlined that, like sucede with all the chemical products, “is important to respect the temperatures, so much of storage as of application, so that the product surrender to the level for which has been conceived”. “The installation is determinant so that the closing can fulfil his value Or and his provision of thermal sensors transmittance”, concluded José Palaces, manager of Shows.