- Building Type : Isolated or semi-detached house
- Construction Year : 2018
- Delivery year : 2020
- Address 1 - street : 553 route du Chiat 07240 SILHAC, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 66 m2
- Construction/refurbishment cost : 68 619 €
- Cost/m2 : 1039.68 €/m2
Primary energy need :
(Calculation method : )
The Cabane de Silhac is a micro-house whose history is intimately linked to the designer and inhabitant that I am, Celia Auzou.
In 2016, after 8 years of rather conventional architectural practice in an agency, I was bored and frustrated by the lack of practice and conviction I encountered around my profession. I then decided to carry out a personal project allowing me to achieve several objectives simultaneously : to live in a place of "refuge" in nature, to live fully a building site, to self-build, to confront my ideas of eco-responsibility with reality, to implement and to have implemented materials of reuse.
To do this, after many sketches, I produced a project that conquered me. The house envisaged is very compact since it is a simple volume, parallelepipedic, of 36m² livable. In order to deceive this reduced surface, the height under rampant is of 3m on average and the surface of the stay reaches 27m ². To manage the steep slope of the land (welcome to the Ardèche) and to find a place for DIY and storage, the house has a workshop under its living space. The 36m² and their terrace are thus suspended above the surrounding forest. At this stage, the main lines are drawn.
The will to work with reused materials implies to adapt to the already existing. The small size of the house, already frugal in itself, facilitates the integration of these materials. Thus, the exterior woodwork, interior woodwork, electrical equipment, the terrace, the wall and ceiling cladding, the frameworks of the partitions and the joists, the stove, the sanitary elements, the furniture and the household appliances, and the landscaping of the exteriors are all subjects carried out in reuse. It is 14 tons of materials which are reused on the micro-house and in its external arrangements.
If you had to do it again?
Having now the adequate local network, I would consider finding reused wood for the frame, thus strongly reducing the impact of the building and pushing the experimentation further. Other items such as insulation and wood cladding for the facades would also be sourced from reuse. On the design side, I don't think anything would change. Perhaps, the building would be 20 cm wider for a little more space in the kitchen and on the side of the bed in the bedroom.
See more details about this projecthttp://www.ville-amenagement-durable.org/IMG/pdf/fiche_rex_reemploi-silhac_la-cabane.pdf
CompanyTECHNOBOIS François-Pierre MOURGUES
CompanyFERRONERIE MARTEL Romuald MARTEL Ferronier
CompanyMinéka Joanne BOACHON Supplier of reused materials
Assistance to the Contracting AuthorityRe.Source Réemploi Célia Auzou AMO reemployment
Reuse : same function or different function
- Indoor joineries
- Outdoor joineries
- 10 exterior joineries, 9 of which are second-hand from careful deconstructions, order errors and exhibition pieces (see joinery plan). Lot 2680€ including transport (+1350€ of installation in total) ;
- interior woodwork : for example, the two kitchen worktops made of two sheets of medium wood recovered from the material library, as well as the second-hand tiles that cover them, or the shower room vanity top made of trespa (which falls from the front and is therefore waterproof) + the vanity unit under the vanity top made from an old chest of drawers. We can also mention the baseboards from a surplus of construction site (40ml). Lot 190€ including transport ;
- electrical equipment, i.e. all switches, sockets and lights. Lot 10€ including transport ;
- the terrace, more specifically the wooden slats up to 40 m² collected (via the good corner), cleaned, recut and turned over to be put back in place for 32m², south and north. Lot 150€ including transport ;
- the wall and ceiling covering is from the 2017 architecture biennial (Atelier Utopies) which took place at the Sucrière in Lyon. The implementation of the scenography having been thought upstream as "non-destructive", the boards and wooden slats were linked by rope. Thus, they were virgin and suitable for reuse. They are 100u. of pine panels (2000 mm x 500 mm x 18 mm thick) and cover all the peripheral walls of the house as well as the ceilings of the 3 rooms. In order to limit the falls, the layout was made according to their dimension, limiting drastically the falls. Lot 350€ including transport ;
- the frames of the partitions and the joists, are from the same sourcing as the pine panels. They are 85u. of pine cleats (32 mm x 45 mm x 4500 mm). They receive the panels of the walls, the ceilings and the massive parquet of the ground, while offering the adequate technical space for the passage of the networks. Lot 400€ transport included ;
- the stove and its floor plate, acquired second hand in the village of Silhac, from an acquaintance. I acquired the smallest one I found second hand (from an acquaintance) in order not to overconsume. It makes 4kw and I spend one stere of wood per year (my neighbor cuts it, makes it dry then cuts it for me) to heat the volume in the cold period. Lot 330€ transport included (+1500€ of installation in total with supply conduit and exit in roof) ;
- the sanitary elements, which are the sink, the kitchen sink, the taps from private individuals Le Bon Coin. Lot 110€ including transport ;
- the ventilation grids / air inlets from a private individual Le Bon Coin. Lot 30€ transport included ;
- the painting of the walls is resulting from funds of pots of professional painters. Lot 10€ transport included ;
- furniture and household appliances (sofa, desk, chairs, tables, bed, oven, fridge, hotplates, dishwasher, etc.) from Le Bon Coin. Lot 2600€ including transport ;
- the exterior design, in particular the exterior staircase in mixed technique: high steps in chestnut beams from the deconstruction of an inn in the neighboring village and low steps in stones from the ground, from fallen dry stone walls. The already there takes all its sense. We can add the works in progress at present that are a wooden fence in bastaings resulting from the deconstruction of a wooden slab in the French style and the installation of 3 tanks of water recovery (of 1000L each). Lot 200€ including transport.
- I can dig in the wall, that is to say for example to take out the insulation if I had a plate of wood wool which is damaged, or to take again the electric networks passing by there if need be, without having to enter in big works of platrerie. There is only to "close the box" when the intervention is finished.
- in the long run, the plates (as well as the cleats) can be reused without difficulty for a third life.
- the stove and its floor plate ;
- the complementary elements to the exterior work (screws, ropes, etc.) ;
- some furniture such as the shower room chest of drawers, the bed, the sofa and all the other small pieces of furniture / decorative elements of the cabin.
|Exterior fittings / Locksmithing - Metalwork||0||0||0|
|Roofing / Exterior fittings||0||0||0|
|Climatic engineering equipment||0||0||0|
|Floor and wall coverings||0||0||0|
|Locksmithing - metalwork||49.98493717||0.619533229||32.94360732|
|Avoided CO2 (kg)||Avoided water consumption (m3)||Avoided waste (kg)|
The reuse operation saved the equivalent of 77322 kilometers traveled by a small car, or 88 Paris-Nice trips, 4981 rectangular bathtubs filled with water and 28 years of household waste of a French person.
In the calculation of the avoided impacts, I could not count :
And I counted the 100 m² of wood panels inside walls and ceilings in the category of false ceiling reconstituted wood (for lack of another more suitable category). Also, I counted the 85u of cleats and the 40 ml of pinthes under the category wood frame (for lack of another more adapted category there too).
Reproductibility and Innovation
- 7 056 €
- 10 %