External Blinds 'Valema' for Facilities to Maintain a Comfortable Indoor Environment

basic information

Achieve a life without relying on air conditioning with high insulation and heat shielding performance. ★ External blinds, a common practice in environmentally advanced Germany. ★ Ideal for the hot summer climate of Japan. Even if you block the intense summer sunlight with indoor blinds or curtains, heat continues to build up near the windows. Relying solely on air conditioning to dissipate this trapped heat is inefficient. The rational method to block sunlight from outside the windows is "external blinds," which are already standard in environmentally advanced Germany. These external blinds create shade outside the window and share a mechanism with traditional Japanese sunshades like "yoshizu" and "sudare," making them the best solution for solar radiation in Japan's climate. 【In summer, about 70% of energy flows in through the windows. The fundamental energy-saving measure is 'window insulation.'】 You often hear the terms 'high insulation' and 'external insulation.' This refers to buildings designed to minimize the influence of outside temperatures on indoor conditions, allowing for a comfortable indoor temperature with less energy. Among these, the most crucial point for energy efficiency in buildings is the 'windows.' By blocking heat from direct sunlight in summer and allowing it in during winter, significant savings on heating and cooling costs can be achieved.

Price range

Delivery Time

Applications/Examples of results

Residential and commercial facilities

Detailed information

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  Cuts about 80% of solar energy from window glass The external blinds from "Valema" have a low solar energy transmission rate, blocking about 80% of it outside the window. Since they are installed outdoors, the air between the window and the blinds can circulate, making it difficult for heat to accumulate and increasing heat insulation. In contrast, with indoor blinds, the heat that builds up between the window and the blinds or curtains can lead to a greenhouse effect due to reflection, resulting in an increase in room temperature.

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  The air conditioning operating rate is about one-third when indoor blinds are installed. This can significantly reduce air conditioning costs. If the air conditioning operating rate for a room using regular glass (single) without sunshades on the windows is set at 100%, the operating rate for a room with external blinds installed is only 25%. Compared to the 75% with indoor blinds, this is about one-third, making it economical.

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  Compatible with a maximum size of 5m x 5m. Large windows are essential for creating an open space that incorporates natural light. However, large openings can also lead to excessive room temperature increases. With Valema, which can be installed in openings up to 5m, you can enhance the design of the building while maintaining a sleek exterior.

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  In addition to a view and a pathway for the wind, privacy is also well secured. The gaze from outside can be blocked by slightly darkening the interior. It is difficult to see inside from outside, while the view from inside to outside is clear. Changing the angle of the slats does not obstruct ventilation, allowing you to secure privacy while inviting in the pleasant natural breeze from outdoors.

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  Slats are available in 26 colors. The "Valema" slats come in a rich variety of 26 colors. For metal components such as cover panels and guide rails, you can choose from about 200 colors. They can be freely coordinated to harmonize with the building's exterior walls and facades, or to serve as accents in design. They contribute to the beautiful scenery of the city through various buildings, including single-family homes.

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  Fix the rail guides on both sides of the window. Typical external blinds are fixed to the wall or ceiling (hidden inside the cover panel). The self-standing type secures the left and right guide rails on both sides of the window, providing solid support for the blinds.