Vaulted Gable Roof Framing

Builders sometimes also prefer this construction method when they want to provide a large attic space or high vaulted ceilings often called cathedral ceilings.

Vaulted gable roof framing.

Collar ties rafter ties tension beams structural ridge beams. Much depends on the structure size and the desired attic loft or headroom. To avoid these problems in a structure with a cathedral ceiling it helps to understand how a typical roof frame works. Scissor trusses flat bottomed gable ends 10 14 2019 page 50 of the bcsi b3 states the following.

Stick framing a roof with rafters is the old fashioned and still most common method of obtaining a vaulted ceiling. Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. A flat bottom chord gable end frame used with adjacent trusses that have sloped bottom chords see figure b3 42b creates a hinge in the wall gable interface that is below the bottom chord plane diaphragm. Each truss is composed of two opposing rafters and a ceiling joist.

An engineer must determine rafter size placement and pitch based on span and. In conventional gable roof framing the slope of the roof is formed by rafters that run diagonally downward from the peak of the roof to the tops of the exterior walls of the building. Contributing editor scott mcbride replies. A gable roof for a shed can be built with rafters with a 1 6 ridge board or using trusses.

A plain flat ceiling gable is actually a procession of light trusses usually spaced 16 in. A simple gable shed roof is often built using 2 4 or 2 6 lumber for the rafters and 2 4 for the collar ties. Some of these can support the roof and prevent ridge sagging and wall spreading. However constructing a stick framed roof is not always easy.