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Tightening is on the way: Soon you can only buy windows with 3-layer glass

the Present. Windows with 3-layer glass. A-rated windows.

Dear child has many names, but the purpose is the same. The window must keep so well in the heat as possible, so that you do not use unnecessary energy.

Until the turn of the year can homeowners even choose whether they want to have the most energy-efficient windows with 3-layer glass, or the cheaper 2-ply, when replacing existing windows. But from 1. January 2021 is the end with the freedom of choice.

- the Rules are been continuously strengthened, so windows energiydeevne will be better. And from 1. January 2021 rules are again tightened, so that in most cases corresponds to a window with 3-layer glass, says Tine Soot, expert in the subject of Organic Bolius.

The stricter rules means, in short, that a window must not emit more heat than it adds to the dwelling in the form of solar thermal energy. In the Building regulations is, therefore, that: the energy balance of the referencevinduet must not be less than 0 kWh/m2 pr. year.

From 1. January 2021 sharpened energikravet for windows and exterior doors. It means that you away can only choose windows with 3-layer glass for your home. It corresponds to energy class A.

the Only exceptions are in conservation areas and listed buildings and houses, and where the rules do not apply.

If you do not follow the new requirements after the cut-off date will be the installation illegal. Been issued a building permit before the turn of the year, can the windows and doors continue to be installed after the old rules.

The stricter energy saving requirements also apply to glasydervægge, roof windows and glass roofs.

You may continue to would like to replace the glazing in your existing windows, but this ensures a lower energy solution, which corresponds approximately to the energy rating D for new windows.

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How to choose energy efficient windows

the Replacement of windows to windows with 3-layer glass will, according to the experts generally give you a better window with a lower heat loss and therefore lower heating bills.

in return, you must pay a higher price for the purchase.

- The only cons with the 3-layer glass is that they are more expensive and heavier. But we have - and will - continuously improve the windows, says Johny Jensen, director of Vinduesindustrien.

Johny Jensen hopes that the replacement of windows can be accelerated, since the 3-layer windows offer great potential for energy optimization. Photo:

In V&S-prisbøgerne Molio Price data, which contains the independent cost estimate has a single window with 3-layer glass, a premium of up to 35 % ift. 2-layer glass. The price covers both materials and installation by professionals.

Various commercial sources believe that the price of a window with 3-layer glass is approx. 10-15 % higher than with 2-layer glass. If you buy a larger batch windows and/or through a craftsman, you can obtain a volume discount, which makes each window cheaper.

Windows with 3-layer glass is heavier, and therefore it can in certain cases be harder though to mount the windows and/or require special equipment to lift them in place.

will, in turn, your heating bills will be reduced, since the three layers of glass keeps better in the heat. As a rule of thumb, the bill would, according to the Dea be reduced by up to 7 percent. Check with a professional for a detailed calculation.

at the same time, a lot of homes increase to a completely level on the energy labelling scheme just by replacing from 2 - to 3-layer glass.

With 3-layer glass, you will experience less drafts and cold, as the insulation is improved. You will probably also experience a better lydreducering from, for example, traffic and nabostøj.

will, in turn, the amount of daylight be poorer and of a different nature, since the rays must pass through one layer of glass more. Therefore, you should consider to change the window's proportions or dimensions of the replacement, so you get a greater vinduesflade.

in the Past the frame or sill of windows with 3-layer glass has been significantly greater, and therefore it could have negative implications for the house's expression.

But over the years, the windows are continuously being improved, so it most often will not have an impact. However, they are deeper due to the extra layers of glass.

You must continue to keep your current windows and then switch the windows when it gets currently. Please be aware, however, that the replacement of even the best low-emissivity glazing will only cause the equivalent of a D-mark window.

Then you will think about the climate and your energy consumption, you should in most cases consider getting new windows with three layers of glass.

Replace the windows, exterior doors or patio doors in your home, so be aware that you can use håndværkerfradraget to cover a part of the wage cost to the builders.

Read more about håndværkerfradraget here

Energiforbedring of windows

According to the survey, the Danes, the built environment has a switch to low-emissivity glazing/windows have been the most popular energy renovation of the residence for the past six years.

In 2018, which is the latest year the study covers, switched the 13 % of the surveyed homeowners to low-emissivity glazing/windows.

And an analysis made by the Danish energy analyses for Vinduesindustrien shows that just under a third of all windows in Denmark meets the stricter requirements of the building. It also means that the remaining 70 % do not, if they must be changed after 1. January 2021.

There is therefore a strong social potential for energy optimization, if all the windows replaced to 3-ply. Why has Johny Jensen, director of Vinduesindustrien, a desire, that the replacement of windows can be accelerated.

If you choose to switch windows, calls on the expert in the subject Tine Nice to you in even higher degree remember regular venting.

- When you replace the windows, both the window and the joints around the window closer. And so it is extra important that you remember to aerate regularly. Like three times daily.

also, Remember to think about burglary protection, if you get new windows. Do you want to know more about how to secure your home against burglaries, you can read on our campaign page

Maintenance windows

Organic Bolius is owned by Realdania.

Organic Bolius is non-commercial and sells neither products nor services.

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