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How to avoid condensation in aluminium windows.

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Waking up in the morning after a cold winter night to contemplate the meadow covered with dew from the comfort of your own home can be one of the pleasures in life. However, it is not the same when the moisture occurs on your window and it doesn`t allow you to see the scenery. Those water drops called condensations are everywhere; on the shower, in the car, when you clean your glasses, on your glass of white wine…Fortunately, we have gathered some tips to avoid this phenomenon so annoying on your aluminium windows.

First of all, we must make a distinction between superficial and interstitial condensations. The first ones are produced on the inner surface and they appear as tiny water drops. The second ones appear inside the wall and they are only noticeable as stains of damp. Today we are going to address the superficial ones.

Some conditions must exist to cause condensations. The first one, it must exist a difference in temperature between the air and the surface of the glass or the frame. Another factor involved is relative humidity, which it is the ratio of water vapour in the air. Finally, the saturation temperature in the air, or dew point, this is the temperature to which air must be cooled to become saturated with water vapour. To understand how condensations are formed we are going to use the example illustrated in the following graph.

Imagine a room at 22º C with a Relative Humidity (RH) of 65%. This atmosphere has a certain amount of water as vapour (11gr/Kg dry air). If this air were cooled to 15ºC without changing this concentration, it will reach the saturation point (RH=100%). This means that the air wouldn’t accept more vapour, and it will become water. So, if this air touches an aluminium window or a glass under 15ºC it will suffer condensations. However, the causes will be related with the water vapour concentration, the environment temperatures and with badly insulated windows. These problems can generate humidity, damp stains, chips in the paint and even mould; therefore, we are going to show some solutions to condensation on aluminium windows according to the reasons:

EXCESS OF RELATIVE HUMIDITY

  • Don’t dry clothes or practise sport in the room. (In this case, ventilate).
  • Don’t close the curtains to allow the window to be well aired.
  • Ventilate the room regularly reducing room humidity.
  • Use dehumidifiers.

 

ROOM TEMPERATURE

  • Avoid excessive heat at home, it increases vapour concentration.
  • Use thermostat to adjust air temperature.
  • Close blinds to avoid windows getting too cold
  • Install air-conditioning systems in the house.

 

ROOM TEMPERATURE

  • Avoid excessive heat at home, it increases vapour concentration.
  • Use thermostat to adjust air temperature.
  • Close blinds to avoid windows getting too cold
  • Install air-conditioning systems in the house.

 

BADLY INSULATED WINDOWS

  • Your window can be badly insulated because of a poor fitting.
  • Fill the cracks that let air pass through; they make the frame temperature lower.
  • Change the windows with thermal break and Class 4 air permeability Windows.

 

In our sales catalogue you can find lots of windows which will significantly reduce condensations.

For example, our innovative E-65 system, with TB of 24mm, that allows 50mm glazing, provides an unbeatable performance against thermal transmission.

Interested links

 E-65 Series (here)

 

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