Hamada design covers Japanese house with diamond pattern galvalume roof

a house with a large roof made of Galvalume sheet steel

located in Japan’s city of SakaiOsaka Prefecture, this family House through Hamada design stands out from its surroundings with a large diamond pattern roof made of Galvalume steel. the project serves as an extension of the main building on the west side of the site, which is topped with a traditional irimoya (east asian hipped and gabled) roof. The two structures share an open courtyard and are loosely connected to each other by a wooden deck that wraps around one of the corners of the new building. The deck serves as an outdoor patio, which remains sheltered from the elements thanks to the extended overhangs of the roof.

all pictures by yohei sasakura

hamada design connects the inner and outer courtyard

Hamada designs project is located in an area of Sakai city where traditional and modern constructions coexist. The roof, which overhangs the building, is made from a large diamond patterned galvalume steel plate and is shaped to allow this to happen channel natural light towards the courtyard. Meanwhile, under its eaves, a comfortable living space is created for the family to enjoy the outdoors while remaining sheltered from rain or harsh sunlight.

inside, the Japanese architecture studio has placed a common area on the west side of the house where the courtyard is located. The space under the eaves, which houses the kitchen, living and dining room, is connected to the outdoor wooden deck by floor-to-ceiling openings. On sunny days, these fittings can be opened to integrate the two zones and create a continuous flow between inside and outside.