Detail Skillion Roof Framing Plan

A butterfly roof has two skillions which angle down towards the centre.

Detail skillion roof framing plan.

The run or half the building span is the base of the triangle. The skillion and shed style roofs are framed with a single slope 2 4 or 2 6 or thicker rafters spanning from the low wall to the high wall. Mark out angle birds mouth. Skillion roof framing calculator plan diagram with full dimensions.

If you plan to have eaves to protect the shed walls make sure you add the extra length when measuring the rafters. Skillion roofs are generally built upon rafters but cost considerably less than roofs that feature multiple slopes. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Skillion lean to roof profile diagram quest.

A fair estimate for a skillion roof is anywhere from 6000 to 12 000 depending on various factors like the pitch and the materials used to build the roof. Skillion roof rafter detail diagram with all dimensions and birds mouths scale. Mark out angle birds mouth. This design is a particularly effective way to trap water which is a big advantage for houses where collecting rainwater is a priority.

Skillion shed style roof framing. Skillion lean to roof framing calculator. Skillion roof framing calculator plan diagram with full dimensions. The rise or height of the roof at its peak is the altitude of the triangle.