Preserve your old windows

Get professional help to energy-optimize your existing windows

Improved insulation for your property

Energy glass is an innovative solution that improves the insulation and comfort of your windows. It is designed to be installed on existing windows. Energy glass works by adding an extra pane of glass, reducing heat loss and ensuring a comfortable indoor climate in your home. Energy glass offers several key benefits that make it an ideal choice for both residential and commercial customers, including:

  • Energy efficiency
  • Easy mounting
  • Easy to maintain

If you don’t want to replace your windows, energy glass can easily be installed as a retrofit solution on your existing windows, meaning you don’t have to replace the entire window. In addition, the glass requires no special maintenance and can be cleaned like regular windows. Would you like to learn more about the benefits of energy glass? Fill out our contact form and we will contact you as soon as possible to discuss your needs.

Documented effect

Research conducted by BYG-DTU at the Technical University of Denmark has shown that pine windows fitted with Optoglas have a total U-value of 1.7 W/m²K. This is a significant improvement compared to traditional single-glazed windows. For windows with thermoglass exterior, an even lower U-value of 1.39 W/m²K is achieved, demonstrating the ability of energy glass to improve thermal insulation.

Installation and use of Optoglas

Optoglass is typically installed as a pre-fitted solution, which means your existing window frames do not need to be replaced. This often makes it a cheaper option than replacing the entire window.

With an Opto Glass installation, you can also optimize older double glazing by adding an extra pane of glass, which will improve both energy and sound insulation in your home. This method does not change the light penetration as Optoglas is mounted directly on the existing window frame. One of the great advantages of Optoglass is its practicality, as it requires no special maintenance and can be cleaned like regular windows.

Contact us

Need to know more about how Optoglas can improve your home or business? Contact us today by phone +45 59 32 10 32 or send an email to info@optoglas.dk if you would like more information or a non-binding offer. We are ready to help you find the best solution for your windows.

Why choose Optoglas?

  • Energy optimization

    Optoglas insulates 30% better than similar thermal windows and has a better U-value (2.2) than a 2-layer thermal pane. By using special neutral energy glass, a U-value of 1.7 is achieved – equivalent to a 3-layer thermal pane (DS 418).

  • Instructions and installation

    We have extensive experience in restoration craftsmanship and offer both guidance and installation of Optoglas on your existing windows.

  • Better indoor climate

    Optoglass improves the indoor climate while reducing outside noise, making your property more comfortable.

  • 5-year warranty on all fittings

    As a member of the Glaziers’ Guild, you get a 5-year warranty on all fittings installed in connection with Optoglas on your current windows.

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