
The efficiency of Van Ruysdael glass
A true game-changer. Van Ruysdael’s technology enables the glass to distinguish between different light waves: ultraviolet (UV) radiation, infrared (IR) heat, and visible light. An innovation that echoes the groundbreaking work of physicist Max Planck in the early 20th century.
Thanks to this technology, Van Ruysdael glass blocks 50% of convective (conductive) heat transfer (U-value) and reflects 99% of infrared heat precisely to where it is needed. This takes it a step beyond window glass with the lowest U-value.
It opens up new possibilities for professionals who demand the highest energy performance and ambitious energy optimisation, without compromising on beauty and efficiency.
Reflection
To understand the reflective ability of glass, it is important to know that energy is emitted in small units (photons). These photons contain energy and are emitted in different quantities (quanta) and different wavelengths (radiation). The Van Ruysdael glass distinguishes between the different wavelengths. The wavelength of UV is kept out by the glass.
Due to the brightness of the Van Ruysdael glass, all visible light is transmitted. And that of infrared heat is kept in by 99%.
Infrared heat is great for covering long distances and overcoming drafts. Infrared is invisible to humans, but can be felt because the body absorbs 95% of infrared heat. At the speed of light, this creates a pleasant warming effect.
Unlike other types of insulating glazing: we achieve the desired thermal comfort sooner with a lower interior temperature, saving more energy.
More than just insulation
Van Ruysdael’s technology ensures the perfect balance in the indoor climate. It eliminates disruptive elements in the glass, such as gas-filled cavities, strips, or dots used to achieve a low U-value. This also makes complex ventilation systems with heat recovery (HRV installations) unnecessary, resulting in significant cost savings and a healthier indoor environment.
The greatest advantage is that Van Ruysdael glass directs as much as 99% of infrared heat precisely where it is needed. This leads to significantly lower energy consumption and improved thermal comfort, often by allowing for a lower thermostat setting. The amount of convective and infrared heat your heating system emits depends on the type of system you use. The more infrared heat, the more efficiently the heating system operates, and the more comfortable the indoor climate becomes.
With this technology, you get the most out of your heating system while optimising your energy consumption.
Panel radiator

Floor heating

Infrared heating

74% yield
92% yield
99% yield

Convection heat

Infrared heat
Clear
Original Van Ruysdael glass meets the highest quality standards and transcends the limitations of insulation. Within the evolution of window glass in recent decades, the pursuit of "insulation" has often superseded aesthetic, architectural and natural aspects. Van Ruysdael glass is free of fragile cavities, strips, dots and gases, which not only protects architectural integrity, but also contributes to a healthier indoor environment. This clear, thin glass with a standard thickness of 6.5 mm embodies the essence of aesthetic precision and quality, available in every conceivable form to meet the most demanding designs and architectural visions. Van Ruysdael glass brings clarity to architecture, both in appearance and mission.