Thermal variations in a Vita Nova wooden villa

Among the characteristics that make Kager wooden houses outstanding in the construction field are the remarkable energy performances we guarantee for each project. This is especially true for homes with Vita Nova windows that cover extensive surfaces and replace entire walls.


Our customers often wonder how much large windows impact energy performance. This concern is understandable: glass indeed disperses heat faster than masonry or wooden walls, potentially leading to cold interiors in winter and overheating in summer.


However, evaluating a house’s energy performance requires considering it as a whole. Homes, much like organisms, function as integrated systems. Thus, it’s essential to make an overall assessment rather than focusing on a single element. Many techniques are applied to make our homes energy efficient. In this analysis, we delve into the importance of triple glazing and active blinds in Vita Nova houses.

Triple darkening glass villa Vita nova
Villa Vita Nova stained glass night Kager
Villa Vita Nova triple darkening glass exterior

Kager technology

To ensure minimal temperature variations inside Kager homes, we have adopted two complementary technologies: triple glazing to prevent cooling in winter and blinds to prevent overheating in summer.

Triple glazing

The glass we use is triple-glazed, which significantly reduces the thermal insulation coefficient. On average, single-glazed windows have a coefficient approaching 5.8 W/m²K, and double-glazed windows have around 2.8 W/m²K. The glass adopted by Kager has the lowest thermal coefficient value achievable today: 0.5 W/m²K.

Vita nova kitchen with triple glazed interiors

Blinds and sunblinds

Darkening systems are an often underestimated solution with great potential. These elements are placed in front of windows and glass to protect the home from the sun’s rays. The significant advantage of these systems is their ability to tilt the slats to regulate the amount of light and heat passing through the glass.


At Kager, we place the blinds outside the home. If inserted inside the glass, heat would still pass through the windows and enter the house. By placing them outside, they effectively shield the structure from the heat.

Villa Vitanova living internal blinds Kager
Vita nova living Kager sunblinds
Sunblinds, exterior detail of Villa Vitanova Kager

Additionally, an innovative technology unique to us allows for the integration of sunshade guides within the Vita Nova structure, making them invisible when closed and ensuring no aesthetic impact on the facade.


To ensure maximum living comfort, the blinds can be managed by the home automation system. This system, through light sensors, can regulate the amount of sunshine (and thus energy contribution) based on the season and the day/night cycle.


By combining high-performance materials and advanced technologies, we create homes that maintain optimal living conditions year-round. The synergy between triple glazing and external blinds is a key element in achieving the energy efficiency that Kager houses are known for.