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Can I install glass with better insulating properties in my window frames?

If the glass in your windows needs to be replaced, it might also be time to replace the window frames. But what if you don’t have the budget for this right now? Will it suffice to only upgrade the glass in the existing window frames instead? Read this article and find out.

If you’re considering switching to glass with better insulating properties, it is best to also replace your window frames with properly insulating frames with improved gap sealing and multi-point locks. This is definitely worth considering if your window frames need replacing within ten years. If you don’t have the budget for this, you can keep the existing frames in the following cases:
 

  1. The frames are in good condition
  2. The frames are sufficiently solid to support the weight of the new glazing
  3. The frames are sufficiently sealed
  4. The frames are thick enough (if applicable, after the grooves have been routed)
  5. The hinges are sufficiently solid to support the weight of the new glazing

This article was published on 12-10-2023. Unless expressly provided otherwise, all information you consult or obtain here is entirely without obligation and for information purposes only. The information applies exclusively to the Brussels Capital-Region.

It will be updated regularly in order to be as up to date as practicable, though no guarantee is given to that effect. KBC Bank NV does not provide any guarantee as to whether these figures are up to date, accurate, correct, complete and/or suitable for a particular purpose of this information. The information provided here does not constitute advice or an offer to sell products or services and is not intended for commercial use. You remain fully responsible for any and all consequences of any use you make of it. The intellectual property rights to the information, publications and data provided here are vested in KBC Bank NV or in third parties, and you are required to refrain from infringing these rights. Any transfer, sale, dissemination or reproduction of this information is prohibited without the express prior written consent of KBC Bank NV.