Butterfly Roof Construction Detail Pdf ~upd~

Standard shingles are impossible on a butterfly roof (they would leak at the valley). Your construction PDF must specify a continuous membrane system.

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. butterfly roof construction detail pdf

Leo stood under the completed roof. The two wings of the retreat tilted down, catching the first fat drops of rain. Water sheeted into the central 24-inch steel-lined gutter, swirled toward the sculptural downspout, and cascaded into a basalt infiltration basin. No leaks. No ponding. The desert drank. Standard shingles are impossible on a butterfly roof