Butterfly Roof: Two Wings Dipping in the Center

The roof of a single-story house consists of two sloping planes that tilt towards the center, forming a V-shaped valley at their intersection. Rainwater flows along this valley to a downspout at one end, then into a ground-level rain garden. Because the roof is low in the center and high at both ends, the side facades can feature floor-to-ceiling glass nearly 4 meters high, bringing the surrounding scenery completely indoors. From the interior, the roof panels appear as a continuous wooden ceiling, with the slope extending outwards to form a 1.8-meter overhang. The structure features exposed steel beams. The surroundings are open grassland. Avoid: a typical gable or flat roof, the central valley without drainage, the ceiling not continuing the roof's slope, small windows on the sides.

Translated from Chinese by AI.

一棟單層住宅的屋頂由兩片向中央傾斜的斜面組成,交會處是最低點,形成一道 V 形的谷,雨水沿谷流向一端的落水口再導入地面的雨水花園。因為屋頂中央低、兩端高,兩側的立面可以開到接近 4 公尺高的落地玻璃,把周圍的景色完整帶進來。屋面板從室內看是連續的木質天花,斜度延續到室外成為出挑 1.8 公尺的簷。結構是外露的鋼梁。周邊是開闊的草地。避免:屋頂做成一般的雙斜或平頂、中央谷不做排水處理、天花不延續屋頂的斜度、兩側開小窗。