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In collaboration with the Noord-Hollandse Glascentrale, the old single glazing has been replaced with BENGglas Double Coated – including custom secondary glazing to preserve the stained glass.

The result? A significant leap in energy rating, extra comfort, and less street noise. An authentic character, yet energy-efficient.

In collaboration with Eekhuis Schilder – glass and wall finishing, the old single glazing (U = 5.8) was replaced with BENGglas vacuum glass with top insulation of U = 0.40.

Thanks to the slim construction (8.3 mm), the existing frame was preserved and the authentic appearance remained intact.

What do you get when you replace single glazing with BENGglas Double Coated? A home that is quieter, more economical, and more comfortable—without having to overhaul your window frames.

Glazier Kok Renkum replaced the old single glazing here with BENGglas Double Coated: one of our best insulating variants with a U-value of only 0.40. Extra nice: this version is also sun-blocking. In the summer, it stays pleasantly cool, and in the winter, you keep the warmth inside.

Glashandel van Spaendonk makes iconic national monument sustainable with BENG glass

85 years ago, a baker commissioned the construction of one of Tilburg's most striking buildings: the Bakery on Acaciastraat. With its sleek plastered white facade and colorful, geometric patterns, it was a real eye-catcher at the time – and it still is!

Thanks to the application of BENG glass vacuum glass, the monumental character and authentic appearance of this special building are fully preserved. Sustainable and stylish, without compromise.

At this farmhouse, the old single glazing (U = 5.8) has been replaced by BENGglas vacuum glass with an insulation value of 0.40. A significant leap forward in living comfort and energy consumption.

Because the glass is only 8 mm thin, it could easily be placed in the existing frames. This way, the original character of the house is preserved — with today's insulation value.

In collaboration with PROGLASS B.V., this beautiful detached villa in Baarn is equipped with the best insulating glass in the world: BENGglas!

The old single glazing (U = 5.8) has been replaced by ultra-thin vacuum glass with an impressive U-value of 0.40. Thanks to the minimal thickness (only 8.3 mm), the original frames could remain in place — ideal for those who want to insulate without compromising on character.

Extra beautiful detail: some panes are installed as secondary glazing in front of the existing stained glass. This way, the stained glass is preserved and the house still benefits from top insulation.

Comfortable living in style, without compromises!