Located in 22@, an urban renewal area of Barcelona, Entegra presents a facade of carbonized wood and is designed to be near-zero in net energy consumption. The program is resolved through an open-plan ground level and eight floors above, providing 4,138 square meters of office space. The structural core's being put along the party wall makes for open and flexible workplaces. MEP services and slabs have been kept visible inside, using a formwork with an irregular texture for better acoustics.
The wood has been treated through Shou Sugi Ban, a traditional Japanese technique of charring the outer layer which makes it highly durable, low-maintenance, and well protected against humidity, solar radiation, and insects. The very use of wood minimizes carbon footprint. This, along with passive measures that lessen the building's energy requirements, has made the project qualify for LEED Gold certification. The roof elements are white, keeping absorption of thermal energy down. Natural airing is facilitated through a smart system which, activated by sensors, opens windows to take advantage of cross ventilation. The slabs stick out of the facade, helping to curb solar radiation. In addition, studies were made to determine the optimal percentages of glass and solid on each side of the building, striking the best balance between harnessing natural light and controlling solar radiation. To encourage sustainable commutes, more bicycle-parking slots are provided than the regulations stipulate, and changing rooms help to promote the practice of sports among the building's users.