Windows without thermal bridges! Causes of cold bridges in the assembly seams

The goal of every window in the house - to add natural light into the room and ensure timely ventilation. However, it is important to remember that the thermal properties of windows is much worse than the thermal properties of the walls (that is, the thermal conductivity is higher because of design features and material properties). It is therefore recommended to use a window with the lowest possible thermal conductivity (less than 0.8 W / m2- ° C). Only in this case it is possible to maintain sufficient thermal energy in the overall state of equilibrium. Also be aware that the two-chambered box meets higher requirements than the standard normal window with a wooden frame (the latter is twice as cold).

In addition to the choice of double glazing, one more very important factor - install windows correctly and professionally. First, the window design must be carefully fastened along the walls, and these places should be sealed, especially outside. Most often used for sealing or insulation layer of polyurethane foam. Slopes should cover about 80% of the opening, which means that they have to go to the window frame is not less than 6 cm. And around the windows around the perimeter, including the lower part of the window under a window sill. Thanks to a careful sealing and "right" slopes, this part of the house will be protected from the wind and cold bridges.

Note that the typical length of a window is 6 m (1.5 x 1.5 m). The house is of medium size, normally has 10 windows. Accordingly, the length of cold bridges can be significant. So there is something to be overcome. Especially that make reliable slopes easily, even in built house. Apply enough wide and thick polystyrene strip, cover it with fiberglass mesh and apply a layer of plaster. For this reason, the insulating properties of the frame is five times higher.

In energy-efficient homes is often used special three-layer system for the final sealing of the window openings. The inner layer protects the structure against moisture (tape, silicone), a thermally insulating medium (Polyurethane foam), and the outer breathable, but protects against weathering (Foil tape).

With these simple and complex rules, you will protect your home from the cold bridges!

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