EXTENSION MAISON - SAINT-CAST | FELD Architecture

Ossature bois / Zinc / Bioclimatique Saint-Cast-le-Guildo / France / 2015

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30 Love 3,579 Visits Published

Extension of a seaside villa from the early 1900s.


The new structure offers unique qualities of volume, light and openness which were absent from the existing house.


The main volume is designed as a single object, all clad in zinc shingles which were handcrafted to order. Construction detailing and execution was carried out with infinite care.


Partly cantilevered, the extension rests on a dark substructure, making it lighter.


Large windows on all façades bathes the interior spaces with sunlight throughout the day. They also provide a continuous relationship with the surrounding garden which was absent from the existing villa.


The extension structure is timber-frame and glued laminated timber for the superstructure and cast concrete for the substructure.


This ecological architecture features highly efficient thermal insulation (wood wool and polyurethane), combining with passive solar gain to save energy, and rainwater harvesting.


Every construction detail (façade, joinery, railing, fireplace, cabinetry) was custom designed by the studio


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Extension d’une villa typique du style balnéaire 1900, le projet apporte toutes les qualités d’espace et d’ouverture d’une architecture contemporaine. Le volume principal est traité comme un objet, entièrement habillé de bardeaux de zinc façonnés sur-mesure, dont le calepinage rappelle la pierre de la maison ancienne. La mise au point des nombreux détails de construction et leur réalisation ont nécessité un véritable travail d’orfèvrerie. 


Posée sur un soubassement sombre, l’extension est comme suspendue. De nombreuses ouvertures éclairent les volumes intérieurs, qui sont ainsi baignés de lumière tout au long de la journée et bénéficient de larges vues sur le jardin.


La structure de l’extension est en ossature bois pour la partie supérieure et béton pour la partie inférieure. Son isolation écologique renforcée est recouverte d’une peau en zinc pré-patiné quartz pour les façades et anthracite pour la toiture.


Tous les détails de façade, menuiserie, garde-corps, ainsi que la cheminée en acier et céramique ont été dessinés par l’agence.


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Info sheet
Project status : built
Completion : 2015
Location : Saint-Cast-le-Guildo (Brittany) France
Floor area (extension) : 120 sqm
Floor area (existing house) : 130 sqm
Duration of studies : 6 months
Construction : 18 months

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    Extension of a seaside villa from the early 1900s. The new structure offers unique qualities of volume, light and openness which were absent from the existing house. The main volume is designed as a single object, all clad in zinc shingles which were handcrafted to order. Construction detailing and execution was carried out with infinite care. Partly cantilevered, the extension rests on a dark substructure, making it lighter. Large windows on all façades bathes the interior spaces...

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