Types of windows
Choosing the right type of window or door is not a simple matter and it requires special attention. You can choose among hinged windows, sliding windows, lift & sliding windows, pivot windows and folding doors. The most important factors which should be taken into account are the width of the spans in which the window or door will be placed, the available interior space (space boundaries, presence of furniture etc.) and the required performance regarding air and water tightness, thermal insulation, sound insulation and security.
TechnikAL manufactures a wide variety of sliding or lift & slide windows and doors: a wide range of various hinged windows and patio doors:
- Opening inwards with or without a tilt function
- Opening outwards
- Top hung windows (that open outwardly from the bottom)
- Vertical or horizontal pivot windows
- Combination of sliding and hinged window with a deflection mechanism
TechnikAL Company manufactures a wide variety of sliding or lift & slide windows and doors:
- Horizontal sliding windows – In which multiple sliding windows stand next to each other on separate sliding tracks.
- Meeting stile windows – In which two sliding windows stand on the same sliding track and are locked at their connection point in the middle.
- Pocket windows – Usually, one or two sliding windows which when opened are hidden into to the wall.
- Corner windows – Constructions in which two sliding windows make a right angle (90o) and are locked at their connection point in the corner.
To sum up, a vast amount of solutions is provided and that is why you should be careful with some details regarding each particular space. Generally, in order to choose the right type of window or door, you should take into account the following:
- The span that you would like to cover (length, width, height)
- Climate conditions of the exterior environment.
- The layout of the house and its furniture
- The access to the window or door, so as to open/close it as well as to be able to clean it inside and outside.
- The level of security you want to achieve.
The products we manufactures are designed in accordance with the latest design trends and have:
- Straight and minimal lines
- Ergonomic handles of high aesthetics and in various colors
- Concealed hinges
- Concealed sashes in order to minimize the visible aluminium
- Fames hidden inside the walls
- Narrow interlocking profiles for uninterrupted extensive glazing surfaces
- Low thresholds which provide easy access to the elderly, children and people with special needs according to European standards.
Examining the thermal insulation of a window or door
The Uf indicates the thermal insulation level of the window without the glass panel, so it measures only the thermal loss of the frame and the leaf. Through the Uf we can directly compare two different frames and make useful conclusions about the level of the thermal insulation they offer. Though, in order to come to a final conclusion, we should check the Uw-value, which measures the thermal losses of a window as a whole, including the glass panel. Considering the fact that glass represents usually 70% -80% of the total surface of a window, it is obvious that the Uw indicator is crucial regarding the thermal insulation of a window.
For example, a simple non-insulated aluminium window with an energy efficient glass, can have a thermal insulation level similar to another more expensive thermally insulated aluminium window which does not include an energy efficient glass panel. So, we have to pay attention on both indicators, but give more emphasis on the Uw which is in fact the final thermal insulation of the window. Note that in entrance doors the corresponding indicator is called Ud and measures the level of thermal insulation of the door combined with the applied panel.
Last but not least, the Ug indicator determines the thermal insulation of the glass panel alone. In particular, the Uf-value combined with the Ug-value lead us to the final Uw-value (for windows/ balcony doors) or Ud-value (for entance doors).
It is important to remember that all of the above indicators measure thermal losses, which is why they are also called thermal transmittance indicators. The lower the thermal loss, the greater the thermal insulation of the tested windows or doors. Therefore, the lower the value of Uf, Ug, Uw and Ud, the higher energy efficiency will your windows and doors have. For example, a sliding door with Uw =1,6 W/m2K will offer higher thermal insulation than a sliding door with Uw =1,9 W/m2K. Finally, we should stress that Uw and Ud should always be calculated and compared for specific frame dimensions.