Windows with double glazing - with which price do you have to expect?


Often when a window exchange, the question arises, if you should still choose windows with double or even triple glazing. Which price differences there are, and how the price-performance ratio differs for double and triple-glazed windows, read in detail in this post.

Average window prices

Specifying a general price for a window is difficult. Each window has its own price. That depends on:

  • window size
  • Window frame material
  • Safety class of windows and glazing but also of the
  • Window manufacturer and the
  • windows quality

For an ordinary living room window, plastic windows can usually be estimated to cost between EUR 350 and EUR 500 if it is a double-glazed window.

Price differences for triple glazing

The much more powerful triple glazing is in many cases only marginally more expensive. A comparison of identical window models with double and triple glazing shows that the price differences are often only 10 - 15%.

Cost-benefit calculation for double and triple glazing

Both windows have both advantages and disadvantages, both of which must be considered. Triple-glazed windows are much more powerful and have significantly lower U-values ​​than double glazing.

The requirements of the EnEV, namely a U-value below 1.3 W / (m²K) both fulfill. However, double-glazed windows are only slightly below this value, while triple-glazed windows can also have U-values ​​of less than 0.6 W / (m²K).

For the saving of heating energy and the reduction of the heating energy demand high-quality triple-glazed windows are usually cheaper. This is not necessarily true in all cases, as shown in the next section.

In addition, the soundproofing quality of triple-windows is usually much better.

Different total energy transmittance (G)

Windows not only have a U-value, but also a G-value. This value indicates how translucent a window is. A higher translucency means that even more solar heat penetrates through the window, which warms the rooms very effectively in winter.

While triple-glazed windows only have a light transmittance of around 70 percent (G = 0.51), the light transmittance for double-glazed windows is 80 percent (G = 0.63). This means a noticeably higher amount of so-called solar gains in winter.

On the south side, with appropriate planning, a double-glazed window can often save more heating energy than a triple-glazed window. In any case, this should be exactly calculated and determined on the basis of the location and the window position.

Tips & Tricks

Although windows from Poland are sometimes much cheaper than windows from domestic production, be sure to convince yourself of the quality and the guarantees and delivery conditions before installing such windows.


Video Board: How Much Does Double Glazing Cost?