Architects: Yuko Nagayama & Associates, shohei yoshida + associates Area: 62 m² Year: 2022 Photographs: Satoshi Takae Structural Engineering: HSC Landscape Designer: Toshiya Ogino Landscape design Architects: Shohei Yoshida, shohei yoshida + associates (Architects) Country: Japan
House with Membrane Roof is a compact urban residence in Japan designed by Yuko Nagayama & Associates and shohei yoshida + associates as a response to a dense site with limited access to light and views. Instead of relying on conventional windows, the house draws daylight from above through a translucent, double-layer membrane roof that softly diffuses light into an interior atrium. This central void organizes the spatial layout, with brighter communal areas above and more enclosed private spaces below, creating a clear hierarchy of light and privacy. By integrating structure, light control, ventilation, and an indoor green element, the project demonstrates how a small home can achieve spatial richness and a strong connection to natural conditions despite tight urban constraints.
Today we explore a compact residence in Tokyo, known simply as the House with Membrane Roof.
Designed by Yuko Nagayama and Associates in collaboration with Shoei Yoshida Plus Associates,
this 62 square meter home responds to the constraints of its dense urban site.
Surrounded on all sides by neighboring buildings and offering only a narrow street frontage,
the design rejects traditional large windows and instead turns its attention upward,
inviting light into the interior from above. At the heart of the project is a roof crafted
from a flexible, double-layer membrane. This roof is not a static covering, but a sculptural surface
that channels soft, diffused daylight into the upper level and down through an atrium to the
spaces below. Light filters through the membrane's translucent surface, creating a dynamic interplay
of brightness and shadow that shifts with the sun and weather throughout the day. The spatial
organization is simple yet carefully considered. The second floor functions as the primary public
zone, filled with gentle, luminous light that reinforces a sense of openness despite the
compact footprint. Below, quieter and more enclosed spaces such as the bedroom and bath reside on the
ground floor, where daylight is deliberately subdued, evoking the calm, protective quality
of a cave-like interior. Instead of a conventional garden, the architects introduced an indoor
green space within the skylit atrium. Here, a single tree thrives under the ethereal glow of
the membrane roof, bringing vegetation into the life of the home and allowing occupants to
experience nature directly rather than through a window. This gesture reinforces the theme of
intimate connection between interior life and the natural rhythms of light and growth.
The membrane roof also serves environmental functions beyond daylighting.
Its layered composition integrates structural support, insulation, and ventilation,
allowing air to circulate naturally within the roof cavity. Throughout the day, the quality of
light transforms from bright and white in the morning to warmer hues at dusk, making the roof
itself a sensitive mediator between the exterior environment and the interior experience of dwelling.
