Rothoblaas - Soundproofing Solutions Page 136
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THE WINDOW AND DOOR INSTALLATION PLAN AND ITS EFFECTS Several factors determine this aspect: ranging from the building tradition of the place where the structure is built, the client’s habits, the type of construction chosen. However, it is important to consider that the choice of window/door frame installation plan has an impact on the temperature trend in the construction node, and therefore on the general effectiveness of the installation. Continuity with the insulating layer that may be present in the layers of the wall should be searched for. INTERNAL FLUSH INSTALLATION Some traditional local systems prefer it because it allows the full opening of the window/door. However, this is not an optimal solution from a thermal point of view, as the window/door is moved inwards and the risk of low internal surface temperatures is greater. In order to avoid thermal bridges in buildings with external insulation, it is recommended that the side walls of the window hole are also insulated to join them to the external insulation. thermal dispersion CENTRAL FLUSH INSTALLATION It is the most common in traditional building systems. It is advisable to also insulate the side walls of the window hole in order to join them to the external insulation and avoid thermal bridges. For frame structures with an insulated gap, this solution is also suitable. The mechanical connection of the window/door is made directly to the load-bearing structure of the building. thermal dispersion EXTERNAL FLUSH INSTALLATION The external insulation must cover the fixed frame of the window/door and the subframe, if present, ensuring excellent internal surface temperatures. The mechanical connection of the window/door is made directly to the load-bearing structure of the building. INSTALLATION IN THE INSULATION LAYER This solution is adopted in the most high-performance constructions. It allows the reduction of the linear thermal bridge value. It requires more care when installing the window/door and greater insulation thickness. The mechanical connection of the window/door frame to the structure can be made by means of an appropriately L or Z-shaped timber counterframe or by means of metal brackets. It is the configuration that allows for the best design of isothermal lines so as to avoid any thermal bridges. 138 | WINDOW/DOOR FRAMES ACOUSTICS | ACOUSTIC AND SEALING thermal dispersion
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