Gable Roof Framing Cathedral Ceiling

The gable truss should be the same scissor profile as the common scissor.

Gable roof framing cathedral ceiling.

Studs shall be continuous from a support at the sole plate to a support at. An engineer must determine rafter size placement and pitch based on span and. A plain flat ceiling gable is actually a procession of light trusses usually spaced 16 in. Contributing editor scott mcbride replies.

The trick in framing a vaulted ceiling is figuring out what to do with the ceiling joists. These horizontal framing members tie a building s outer walls together and resist the outward force exerted by the roof rafters in conventional framing. Some of these can support the roof and prevent ridge sagging and wall spreading. Collar ties rafter ties tension beams structural ridge beams.

Stick framing a roof with rafters is the old fashioned and still most common method of obtaining a vaulted ceiling. If it s your first case and if you feel uncomfortable call for the engineer. You can possibly remove them altogether of you include posts in the gable walls to support a structural ridge. Finally when a cathedral or a vaulted ceiling or any gable roof is framed without either an engineered structural ridge ceiling joists or rafter ties or an engineered solution some amount of ridge sag and wall kick out is guaranteed.

To avoid these problems in a structure with a cathedral ceiling it helps to understand how a typical roof frame works. Old cottage cathedral ceiling i have a 50 year old seasonal cottage in a northern climate. If you are framing a cathedral ceiling there are a couple ways to deal with the need for rafter ties. Roof structure definitions support choices for sloped roofs cantilevered roofs cathedral ceiling roofs.

Without joists the walls can bow outward and the roof ridge line may sag. 406mm o c or support more than a roof and ceiling or exceed 8 feet 2438 mm in height for exterior walls and load bearing walls or 10 feet 3048 mm for interior non load bearing walls. 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.