double hung windows

number of chambers in double-glazed windows A single-chamber double-glazed window is more suitable for regions located in a subtropical and temperate climate, houses located in quiet neighborhoods. A double-glazed window is the best choice with the best heat and sound insulation characteristics (provided that the profile is chosen correctly), a universal option for both city apartments and private houses, it can be used not only in temperate, but also in subarctic climates

The ends of the double-glazed window are sealed, the air inside is dry and the glass does not fog up at any temperature inside and outside. In modern double-glazed windows, instead of air, an inert gas is sometimes pumped, most often argon. Its thermal conductivity is somewhat lower than air, but the cost is higher. Whether such a step is justified in terms of energy saving is still a matter of debate. But in relation to the price - manufacturers win unambiguously.

What you need to know when choosing fittings for windows Fittings are the last of the three elements that make up modern windows. This is not only a handle, but also a system of mechanisms that open and close windows in one mode or another. The fittings are made of metal alloys, and you should not save on them. The better the material (such as, for example, alloy steel), the easier the fittings work, the less force must be applied when opening / closing the window, and the longer the service life of the products themselves.

Pay special attention to seals - layers of elastic material along the edges of the profile. It is desirable that they are not tightly attached to the PVC profile, and they can be changed. Otherwise, in case of damage to the seals, you will change the entire profile, and this will cost you much more.

Installation depth In addition to their own heat-shielding properties, such frames allow you to install more durable fittings, thick double-glazed windows and additional contours of insulation and sound insulation. But the width of the profile does not necessarily indicate the number of chambers - there are profiles with fewer cavities, but with a width of 8 or even 9 cm. In terms of general thermal insulation properties, they are better than narrow multi-chamber ones - it is not the number of chambers that matters here, but their size and stock air in them. We can conclude that the greater the installation depth, the better the window in terms of thermal insulation and other characteristics.

Which package is installed on the window largely depends on the seat on the frame, especially on one characteristic - the depth of the package. In good windows, the outer glass should be at least 15 mm from the front edge of the frame, which are overlapped by the profile rebate. For a mounting depth of the frame of 50 -70 mm, the seat of the double-glazed window ensures this distance is at least 18 mm. Few people pay attention to this parameter when buying, concentrating on the number of cameras and the width of the frame, but for heat-shielding properties it is very important - the smaller the seating depth, the faster the glass will start to freeze and mist.

Wooden frames need periodic updating of the paintwork, maintenance of PVC windows is not required. And plastic windows are easier to clean than wooden ones.

The seal should be: as flexible as possible; durable; do not lose their properties at low and high temperatures (-20 ... + 55 0ะก); do not emit odors and toxic fumes; do not change colors over time.

But in slightly more extreme circumstances, such as severe frost or heat, as well as direct sunlight (UV), it can fail. Becoming brittle in the cold and softening in the heat, it quickly becomes unusable if the window sash is actively used. But with the doors constantly closed (or constantly ajar, in micro-ventilation mode, for example), it will last quite a long time.

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