It's important to understand which type of glass to choose and whether replacing your window frames is necessary.
"}},{"componentType":"accordion","accordionList":[{"title":"The benefits of insulated glass","richBody":{"value":"Insulating glass has better insulation than single or double glazing. There are different types of insulating glass.
HR++ glass is double glazing with a coating and insulating gas between the glass panes. As a result, it insulates better than single or double glazing.
Triple glass consists of three panes of glass with a coating and insulating gas between them. This makes it insulate even better. With insulating glass, it takes less energy to heat or cool your home. This saves energy, reducing CO2 emissions.
Vacuum glass is special double glazing that insulates just as well as triple glazing but is much thinner. The pane is about 8 mm thick. However, vacuum glass is a lot more expensive than HR++ glass or triple glass. It’s a great alternative to monument glass for listed buildings or protected cityscapes.
"}},{"title":"Which type of insulation glass is best for me?","richBody":{"value":"It’s a good idea to sort a few things out before you move on to installation. Which type of glass fits your home best? What does it cost? And how much could you save? Can the insulation glass be installed in your current window frames or should you invest in new window frames as well?
With our Upgrade Check, you’ll get a cost estimate straight away, as well as available subsidies and potential savings. It’s a quick and easy way to get the information you need.
"}},{"title":"Do I need to replace my window frames as well?","richBody":{"value":"It depends! If your window frames are in good shape, you really only need to replace the glazing. HR++ high-performance glazing could be a good option. This type of glazing offers the highest insulation value for existing window frames. With HR++ glazing, you could save much more energy compared to regular double glazing. But first, you’ll need to make sure your current window frames are compatible with thicker and heaver types of glazing.
If your window frames need to be replaced now or within 10 years, triple glazing with new insulating window frames and double draft sealing is your best bet. These windows will give you the best insulation performance.
Milieu Centraal (Environment Central) has done the math for you: if you replace all the windows in an average corner house with HR++ high-performance glazing (22m2), the outlay will be roughly €4.700. That’s before subtracting the government subsidy. So how much will you save at the end of the day? Let’s say that currently, all your windows are double glazed. You would then save between €100 and €210 on your energy bill, depending on the energy prices. And you could save even more if you currently have single glazed windows.
"}}]},{"componentType":"promotionalBanner","icon":{"transformBaseUrl":"https://assets.ing.com/transform/bc98b812-1d22-4f9a-8c54-0a560ae59f41/Circle-Keys-9","type":"image","width":64,"original":"https://assets.ing.com/m/de63ea5d47373bc/original/Circle-Keys-9.svg","extension":"svg"},"body":"Discover the costs and benefits of making your home more energy efficient.","date":{},"textLink":{"url":"/en/personal/mortgage/sustainable-living/upgrade-check","text":"Start the Upgrade Check"}},{"componentType":"sectionTitle","title":"Check what type of window glass you currently have"},{"componentType":"paragraph","richBody":{"value":"Before you start insulating, you need to know what kind of window glass you currently have. This determines how much you could save, and whether you’d even benefit from replacing the glass. Single glazed windows are easy to recognise: it consists of a single sheet of glass. It’s clearly visible where the glass meets the frame.
The difference between double glazing and HR glass is impossible to see at a glance. Both types of glass have an aluminium strip on the side, inside the frame, between the sheets of glass. So how do you tell if it's double glazing or HR glass?
If you have single glass windows, there are other ways to improve the insulation of your home as well. A few options are front windows, window film, or monument glass. With these, you could save about as much as with ‘ordinary’ double glazed windows, and your home could feel equally as warm as well. Milieu Centraal recommends these types of insulation only if your home is incompatible with HR++ glass. Like if you live in a listed building or rent, for instance.
Learn more at Milieu Centraal: Double glass, HR++, triple en vacum glass | Milieu Centraal (in Dutch).
"}},{"componentType":"sectionTitle","title":"Subsidies and financing"},{"componentType":"paragraph","richBody":{"value":"The English text of the website is a translation of the Dutch original version. This translation is intended for the customers convenience only. In case of any discrepancies between the two versions, the original Dutch version shall prevail. The mortgage offer and contract will be signed in Dutch. Also, all further communication after signing the mortgage contract will be in Dutch. You acknowledge and accept this. If any assistance or clarification is needed, we recommend contacting your mortgage advisor or to call our customer service via the ING app.
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