Architects from the Dutch bureau Ssse | OvO Associates integrated the building into the landscape: it looks like it is covered by a leaf that has fallen to the ground. The size of its roof is about 1000 m2, and its angle of inclination is 55 °. The park itself has existed since 1923, and now it is divided into three zones - walking, zoo and playground, in which this house is located.
With the help of an unusual roof design in the form of a broken surface with curved edges, the authors of the project tried to blur the border between the landscape and the building. The roof consists of many smaller segments, similar to the edges of a "leaf", which fall to the ground, thus merging with the terrain.
The house is divided into two parts: a guest room and a playroom. The guest part, made of glass and steel, looks like a greenhouse. It includes a restaurant, bathrooms and a "seasonal" area - increasing or decreasing the interior space depending on the season. In summer, this covered space serves as a passage through which the park's main route runs. In winter it can be closed by adding 200 m2 to the available interior space (2500 m2). A glass roof that allows light to enter the building is flanked by a green roof. The glazed facades are "softened" by canopies in the form of leaf edges descending to the ground, which contribute to the stylistic unity of the building.
On the green roof of the play area, where you can walk and play, several dugout houses are arranged as if they were inscribed on the slopes of real hills. In the construction of this half of the building, steel supports support a frame made of steel beams - “veins of the sheet”. The space between them is filled with untreated pine wood: boards of light and dark shades alternate, continuing the botanical theme. These boards absorb or evaporate moisture depending on the humidity in the room. The protection from moisture on the roof is arranged in a similar way: rainwater accumulates there and gradually returns to nature through evaporation.
In summer, the green roof and the sun-resistant climbing plants keep the rooms cool. It turns out that the green roof acts in the same way as a leaf, protecting the waterproof membrane of the roof from temperature changes.
The rooftop landscaping was created with the help of ZinCo. The system, applied to the roof slope, is embedded over a base of plant root resistant bitumen waterproofing membrane. Where the angle of inclination of the roof does not reach 25 °, the ZinCo system "Pitched green roof" with an integrated protective mat BSM 64, which has a high water-holding capacity of 7 l / m2, is used. The next layer is the Floraset® FS 75 drainage and storage element, which consists of 1 mx 1 mx 75 mm boards made from recycled rigid foam: on the back they are equipped with drainage channels, and on the front side with solid rivets that are needed to adhere them to the base in order to avoid slipping.
For roof sections with a slope of more than 25 °, the Steep Pitched Green Roof system and Georaster® elements measuring 54 mm x 54 mm, arranged over a BSM 64 protective mat, are used. These elements are made of polyethylene (HD-PE) and have a central rib that receives a shearing force. As a rule, green roofs are arranged with a slope of no more than 45 °, but in this project, a solution was found for landscaping small sections of the roof with a slope angle of 55 °. Roof parts with such a steep slope use Georaster® elements, complemented by DP 120 profiles, which also help dissipate shear forces.
ZinCo technology for roof landscaping and maintenance roofs has already been used in more than 50,000 completed projects. In Russia, ZinCo began its activities back in 1997 with a project to plant greenery in the underground garage of the Gazprom building on Nametkina Street in Moscow.
Representative office of ZinCo in Russia - company
Tsinko RUS - has adapted ZinCo technologies to the climatic conditions of Russian regions and has been successfully applying them at sites from St. Petersburg to the Urals for more than 10 years.
