May
22
Energy efficient windows and condensation
Condensation can be defined as the formation of liquid drops from water vapor and it is the opposite of evaporation. Condensation on windows can occur when the surface temperature on the glass is lower compared to the humid air indoors. Energy saving windows generally reduce the occurrence of condensation. It is not uncommon for condensation to appear on energy efficient windows indoors even though it shouldn’t. This can be due to the window itself, how it was installed, the window accessories such as curtains and drapes, and the humidity of the indoor air. Condensation is to be of concern because it can create some problems such as stains, mould, and reduction of light and visibility.
There are several ways to resist condensation forming on your windows. One method include installing non conducting sashes and frames and other conduction resistance methods, shading, and putting up curtains and blinds. Conduction resistance methods also include inserting gas between the glasses, reducing the indoor humidity levels in the house, and insulating spacers which reduce heat transmission. Spacers maintain division between panes of glasses in a window.
Condensation is also affected by interior and exterior elements. Interior elements may include curtains or drapes, and exterior elements include landscape items like trees, bushes and etc. For the exterior elements, it depends on what you planted, the amount it sheds during the seasons and how much sunlight you will get as a result. For example, if you plant a birch tree in the winter, it will be bare and you will receive sunlight during the winter season. During the summer, it will shade the window area minimizing the amount of sunlight you’d receive.
If we consider the interior elements, curtains and drapes must encourage the movement of air roughly on the surface of the window. If it prevents air from moving around, this will cause the problem of condensation. The last problem depends on the humidity levels in your home. During the winter months, a reasonable amount of humidity is necessary to keep indoors warm. However, windows that are not energy efficient will cause condensation and frost even though humidity is kept at a decent level. So, make sure you solve the condensation problem with your windows as it may arise to other problems as well.
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