Certified BENG glass installer
Glazier Kok Renkum has been in business in Renkum since 1966. A company that has gone from grandfather to son to grandson! We work for both private and business customers. The core of our working area are the municipalities of Renkum, Overbetuwe, Wageningen and Ede. But also outside these regions we are happy to serve you!
As a BENG glass dealer, we have extensive time with the installation of vacuum glass. This glass is much thinner than conventional insulation glass. Especially with triple glazing, rebates need to be deepened and hardware needs to be weighted down or even completely replaced. With BENG glass, none of this is necessary. In addition, we can also provide BENG glass with a beautiful "stained glass" layout.
Want to know more?
For more information you can always contact us!
Do the decision aid
Answer a few short questions and find out right away which type of BENG glass is best for you!
References
From single glass to all-in-one glass
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.
Monumental homes, modern performance
In collaboration with Glaszetter Kok Renkum, two characterful homes have been made significantly more energy-efficient with BENG glass (U = 0.40).
In Wageningen, the entire kitchen has been fitted with vacuum glass, while in Doorwerth, the entire ground floor has been renovated. For that project, even the glazing beads were custom-made in the workshop of Kok Renkum — ensuring that the result not only insulates well but also perfectly matches the existing appearance.
Smart insulation in the extension
Glazier Kok Renkum equipped this extension with vacuum glass from BENGglas. With a U-value of 0.40, the glass insulates up to ten times better than single glass — and up to three times better than HR++ glass.
Thanks to the slim construction (8.3 mm), it fits effortlessly into existing frames. Extra wide glazing beads were chosen here, so that the edges remain neatly out of sight. Sleek result, without compromising on performance.
Smart insulation with BENG glass in Weerkum
In collaboration with Glaszetter Kok Renkum, this farmhouse in the municipality of Ede has been equipped with vacuum glass from BENGglas. The entire ground floor received a significant insulation upgrade — without losing the character of the property.
BENGglas was chosen because of its excellent insulation value, the tempered version, and the slim construction. Also smart: the use of stick-on glazing bars. It looks classic, insulates better, and is more budget-friendly.
Smart glass, big difference in Renkum
Together with Glaszetter Kok Renkum, this house in Renkum has been fitted with BENG glass with a U-value of 0.40. That means: much less heat loss, more peace in the house, and a lower energy bill — without the need to replace the window frames. Thanks to the slim construction, BENG glass fits perfectly into the existing frames and retains the appearance of the house. Just as easy, just as smart.
Comfortable living in Renkum
Together with Glaszetter Kok Renkum, this characterful house has been fitted with BENG glass with an impressive U-value of 0.40. Where there used to be single glazing, this vacuum glass now keeps the heat in and noise out — without losing the authentic appearance. This way, sustainability perfectly goes hand in hand with preserving atmosphere.
BENG glass with lead division - authentic look - modern performance
Glazier Kok Renkum gave this 1930s house a smart upgrade with BENG glass (U=0.40). By applying a lead division in the transom windows, the classic appearance is preserved — but inside it is now comfortable and well insulated. Less draft, less noise, yet the charm of the past.
From hunting lodge to future-proof living
Glazier Kok Renkum has equipped this beautiful hunting lodge in Rozendaal with BENG glass (U=0.40). Thanks to this smart upgrade – combined with 14 cm wall insulation and sleek new plasterwork – the house is ready for many years of comfortable and energy-efficient living. Beautiful on the outside, warm and quiet on the inside.
Van frisse tuinkamer naar warm welkom
Samen met Glaszetter Kok uit Renkum is deze tuinkamer flink in comfort vooruitgegaan. Waar het eerst lastig was om de ruimte behaaglijk te krijgen, doet BENGglas nu z’n werk.
Het oude HR++ glas (U=1,1) is vervangen door BENGglas met een indrukwekkende isolatiewaarde van U=0,40. Dat betekent: minder warmteverlies, meer comfort én een lagere energierekening.
Zo verandert een frisse uitbouw in een plek waar je het hele jaar door graag zit. Slim verduurzamen zonder grote ingrepen – dat is de kracht van BENGglas.
Smart sustainability in Arnhem
In this detached house, the old single glazing (U=5.8) has been replaced by BENGglas vacuum glass. A significant upgrade, as the insulation value of the house has clearly improved. Since the glass is only 8.3 mm thin, it could be installed in the existing frames. This not only saves costs but also ensures that the original appearance of the house has been retained.
1950s house, ready for now
In collaboration with Glaszetter Kok Renkum, this house from the 1950s has been fully equipped with vacuum glass from BENGglas. The old single glass (U = 5.8) has been replaced with super insulating glass with a U-value of 0.40 — a world of difference in energy consumption and comfort.
Thanks to the slim construction (only 8.3 mm thick), the glass could simply be placed in the existing frames. This not only saves on costs for new frames but also ensures that the appearance of the house is preserved. Smart and sustainable, therefore.