The Big Problem With Secondary Glazing And Condensation

Secondary – and double-glazing are both tried and true methods of making a building more energy efficient. Both will reduce heating and cooling costs and also lessen carbon-dioxide emissions. Both work well but are certainly not equal in their efficiency or functionality. For one thing, there is an on-going problem with secondary glazing and condensation. This is not such a problem with double-panes.

If you choose to install double-glazed windows you should see savings on your energy bill, reducing it to about one half of its current amount. A high-quality double-paned window is very efficient at its job, which is to reduce heat loss and insulate against outside noise and air pollution. Your home will be cleaner and quieter and, most of all, more comfortable and efficient.

One reason double glazing is so effective is because of the insulating space between the two panes of glass. This may be filled with air, gas (such as argon) or left empty (with a slight vacuum). This space acts as an insulating barrier and must be properly sealed in order to function correctly.

Sometimes ‘Low Emissivity’ (Low-E) glass is used, which significantly increases the window’s efficiency. This Low-E coating, applied to one side of the glass pane, is able to keep the heat in your house by bouncing it back when it’s trying to escape through the window. At the same time, Low-E allows the sun’s solar rays through, making good use of the sun’s warmth. It’s a great technological innovation.

Properly installed double-glazed windows will have an air-tight seal, which is important for several reasons. One distinct advantage is the rarity of condensation forming on this type of unit. This, however, is not the case with secondary glazing, which is frequently associated with moisture and condensation problems. This method consists of putting an additional window inside your house, right over the existing single-paned unit. It’s not nearly as efficient, however, it may still be your best choice.

Prior planning consent is not required in order to install secondary windows. For homes that are listed (or in Conservation areas) this may be the best option. It may, in fact, be your ONLY option.

Secondary glazing and condensation problems associated with this method of upgrading your windows is something to consider. They will also cut your energy bill and reduce your emissions but only about half as much as the double-glazed units. Half, of course, is better than none and, in some cases may be the only alternative. Consider the options.

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