A butterfly roof consists of two opposing roof planes that slope downward toward the center. Instead of shedding water to the eaves, the structure channels precipitation into a central, often glazed, valley or a internal gutter system.
The butterfly roof remains a symbol of mid-century modern revival and eco-conscious design. However, its beauty is entirely dependent on the quality of its construction documents. A thorough is not just a drawing—it is a risk management tool. It dictates how water flows, where insulation compresses, and how gravity is defied.
The butterfly roof is essentially an . Unlike traditional roofs that shed water away from the structure, this design directs all loads and runoff toward the center. butterfly roof construction detail pdf
Leo had one move left: the archive.
He typed the phrase into a dusty, deep-web database his old professor had given him a login for. The results were the usual academic papers and vague diagrams. Then, result #7: “Butterfly Roof Construction Detail – 1963, Neutra’s office, scanned.” A butterfly roof consists of two opposing roof
butterfly roof (also known as a V-roof) is a distinctive architectural style where two roof planes slope inward from opposing high edges to meet at a central valley. This design creates a V-shape resembling a butterfly’s wings. Core Construction Components
: This is the most critical detail. The two slopes meet at a central valley that typically contains a large box gutter to manage concentrated rainwater runoff. Purlins and Rafters However, its beauty is entirely dependent on the
One structural dilemma in butterfly roofs is the tendency for the walls to push outward (thrust). While some designs utilize the box geometry of the house to resist this, others require exposed tie-rods. A high-quality construction detail will often illustrate tension ties connecting the two outer edges of the roof spans across the ceiling to prevent the walls from bowing outward under load.