House J3 - cottage in the saddle

House J3 - cottage in the saddle
Address: Jizerské hory, Czech Republic
Project:2019-20
Completion:2021-24
Area:176 m2
Built Up Area:128 m2
Built Up Space:886 m3


Photography: Jakub Kolek
The builder bought a plot with a foundation slab and a project for a cottage in traditional style, which did not suit him due to its enclosure, lack of communication, and poor layout. According to him, the land in the heart of the Jizera Mountains, in a mountain saddle with beautiful views, deserved more. Moreover, he longed for modern living in an open space accentuating the views, with plenty of wood in the interior and the possibility of using the meadow above the house.
We proposed a house with an inverted layout – on the ground floor, facing north, there are private spaces such as bedrooms, an underground bathroom with skylights, and technical facilities, along with the entrance. The upper floor, opening onto the southern upper meadow, consists of one generous open living space moderating views in all directions and towards the mountain panorama. It is complemented by a wellness area for the homeowner with space for a treadmill and a sauna overlooking the meadow. The interior is colorfully restrained – wood, glass, and black metal, with the surrounding scenery taking center stage.
The building respects and reflects the basic material, partially compositional, and urbanistic principles of traditional development in the area, its division, color scheme, and material solutions that contemporarily transform it.
It is designed as a wood-clad structure on a plinth with local stone cladding, featuring a steep gable roof made of dark gray sheet metal broken by a trio of dormers, two of which are located above the eaves of the building and visually engage in the roof planes. The last of the dormers is a "hayloft dormer" allowing access from the living space on the second floor southward to the upper part of the plot, beneath which the house is situated parallel to the contours.
Counterpoint to the wholly traditional form of the main structure is the ancillary structure of the covered parking space executed as a concrete monolith with an extensive green roof, deliberately neutral and relatively unremarkable so as not to usurp attention directed towards the main building.
The entire object is materially and shape-wise restrained, using materials – stone, wood, the dark gray color of the metal roof covering and cement board cladding of the dormers – which contextually integrates into the surrounding natural environment and the context of traditional buildings in the vicinity. The exit from the "hayloft dormer" leads to a wooden terrace, beneath which is a storage room and cellar, nearly invisible from the road and unobtrusive.
The object is a wooden frame structure with thermal insulation made of stone wool between the load-bearing elements of the frame, which are clad on both sides with panel materials. In a similar manner, the ceiling structure is constructed, where a hidden steel HEB profile beam enhances the load-bearing capacity and stiffness of the structure. The construction is laid on a concrete foundation slab with structural reinforcement above a waterproofing layer, with the gable roof designed as a king post truss supported by a central strut, the dormers in the roof plane are beam constructions of the same composition as the roof. The structure of the shed and cellar below the terrace connected to the "hayloft dormer" on the west facade is an uninsulated masonry structure made of lost formwork blocks on a concrete slab, the ceiling/load-bearing slab of the terrace is made of Spiroll panels.
The ancillary structure of the covered parking space is made as a concrete monolith, with the ceiling again made of Spiroll panels with a final layer of a systematic extensive green roof. The building is heated by a ground-water heat pump for underfloor heating and a wood-burning stove in the living space.
Cube.A architecture
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