The house on the hillside exudes both openness and security. Monolithic of insulating concrete and glass the joins as beneficial special module in the context of the stock. Including the outdoor spaces and with views of the city creates a family house with spacious and flexible utility.
House 36 is a monolithic building that resembles a mountain crystal. The angular shell interprets the hillside, roof and walls are cast of the same material. Build entirely out of insulating concrete, the massive walls convey atmosphere, and the large openings bring light. The rough-sawn formwork provides a rich and surface aesthetic similar to a natural stonewall. A quiet material approach selection brings a harmonious balance.
MBA/S believes that special places require special solutions. With the premise to shield the house from the street level, to provide good orientation and views towards the city and to exploit the potential of the garden area opening, the monolithic building almost resembles a mountain crystal.
From the distance the characteristic shape blends into the residential context harmoniously with its triangulated sloped roof. The vivid presence of the peculiar geometric form becomes evident the closer one gets to the house and is complemented by the relationship between interior and exterior space.
For such a design approach, the roof and walls want to be as malleable as clay and cast from the same material. Poured in place joint-less insulating concrete was ultimately chosen for its superior material qualities. Resulting in a fantastic atmosphere to live in.
Thus MBA/S was able to not only eliminate the need for additional thermal insulation but also to avoid typical environmental and building physics issues. The optimized formula and application of insulating concrete is without precedent in Germany. H36 is a pure monolith with walls, floor and roof cast of the same material that stands out like a boulder on the hillside.
The natural, fully recyclable, composite material achieves its outstanding thermal insulation in two ways. The usual pebble stone aggregate is replaced by recycled foam glass granulate and the cement matrix contains 20% air bubbles. This vapor permeable material, with a wall-thickness of 45-50 cm, allows for ideal room temperatures and moisture balance – similar to an old stone house that remains longer warm in the winter and longer cool in the summer.
Overall the structural concept follows the monolithic principle: the folded shell acts like a frame on two load bearing walls. MBA/S in collaboration with the structural engineers from RFR, material and consultancy from Technopor and Vetropor researched and tested the insulating concrete locally with supplier TBR to deliver optimal solutions for all technical and aesthetical demands. House 36 (re-)unites architecture, structure, insulation and technical installations in a single layer concrete stone.
An atmosphere of protection and homeliness is delicately balanced by the large openings bringing sensational light and dimension into the space. At H36 the raw construction surface is the finish quality texturing equally the inside and outside. All the surfaces are haptic and warm with no hollow sounds. Light silver tones emerge from the vivid concrete tones. The rough-sawn formwork provides a rich and sound surface aesthetic similar to a natural stonewall and delicately contrasting with the fine natural wood panels that frames all openings on the inside.
The three floors are connected by a central flight of stairs whose last 11 individual steps leading to the parent’s master bedroom above the main living spaces are delicately hung between two steelwire spiderwebs with no additional connection. The slightly swinging sensation of ascending to the most private rooms of the house is a an example of the detailed care Matthias Bauer put into many of the fundamental components of this house for the users to enjoy everyday.
MBA/S Matthias Bauer Associates:
A house is shaped entirely of insulating concrete, the first of its kind in Germany. The perimeter walls and faceted roof make innovative use of this material for seamless construction and eliminating additive thermal barriers. German architect Matthias Bauer, principal of MBA/S, researched and designed the material potentials leading to this modern Villa overlooking Stuttgart.
Like a mountain crystal, the monolithic house offers privacy from street level above and views to the garden and hillside below. From a distance the triangulated roof blends into the residential context of stone houses. The distinctive geometry becomes evident on closer approach connecting interior and exterior space.
Conceptually, the roof and walls are malleable like clay and cast from the same material. The exceptional material qualities of insulating concrete helped to avoid typical environmental and building physics issues.
The natural, composite material achieves its outstanding thermal insulation by replacing the stone aggregate with foam-glass, and adding 25% air to the cement mixture. This permeability allows for ideal temperatures and moisture balance. Like old stone structures, H36 remains warm longer in winter and cool longer in summer.
Structurally the house is a monolith with a folded shell bearing on two walls. The concrete was researched and tested locally by MBA/S and a team of experts. Villa H36 (re)unites architecture, structure, insulation and systems in a layer concrete-stone.
Shelter and domesticity were balanced with large openings bringing sensational light and dimension. The rough-sawn formwork provides a rich surface similar to a natural stonewall. All surfaces are haptic and warm without hollow sounds.
A central stair connects the three floors with the final run delicately hung between two wire webs creating a slightly swinging sensation. This effect is found in many H36 elements and shows the care Matthias Bauer puts into designing special places.
Project name: HOUSE H36
Location: Deutschland, Stuttgart, Germany
- Type By Characteristic: Contemporary House, Green & Sustainable House
- Type By Site: Hill House
- Type By Size: Big House – (451 sqm – 650 sqm)
- Type By Materials: Concrete House
Project Area: 465 sqm
Site Area: 320 sqm
Gross building volume: 1050 m³
Construction Year: 2011-2013
Completion Year: 02.2014
Client / Owner / Developer: Private
Architects: MBA/S Matthias Bauer Associates – Pfizerstraße 5, 70184 Stuttgart, Germany
- Matthias Bauer, Björn Sippel, Sabine Schneider, Sven Hummerich, Martin Blank, Wulf Kramer, Walker Stone, Aidas Barzda, Chistian Mayer, Thomas Krause
- Structural Engineer: RFR Group, Stuttgart
- Mechanical Contractors: Schöllhammer Energie-Systeme
- Facade Consultant: VS-A
- Climate Engineer: Transsolar
- Landscape Architects: Glück Landschaftsarchitektur
- Lighting Design: .PSLAB
- Insulating concrete: Technopor
- Wood: FSC-Sipo-Mahagoni
- Cast Polymer: HI-MACS®
Text Description: © Courtesy of MBA/S Matthias Bauer Associates, german-architects
Images: © MBA/S Matthias Bauer Associates, Martin Blank, Roland Halbe