Gable Roof Framing Cathedral Ceiling

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.

Gable roof framing cathedral ceiling.

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. These horizontal framing members tie a building s outer walls together and resist the outward force exerted by the roof rafters in conventional framing. A plain flat ceiling gable is actually a procession of light trusses usually spaced 16 in. Studs shall be continuous from a support at the sole plate to a support at.

But a gable roof also requires some form of horizontal. To avoid these problems in a structure with a cathedral ceiling it helps to understand how a typical roof frame works. If you are framing a cathedral ceiling there are a couple ways to deal with the need for rafter ties. The most common tension tie observed in roof framing for a conventionally framed gable roof is the ceiling joist that forms the bottom chord of the roof triangle shown below.

Contributing editor scott mcbride replies. Without joists the walls can bow outward and the roof ridge line may sag. There is no insulation in the ceiling and i suspect little to no effective insulation in the 2x4 walls. The simple 6 12 gable roof is composed of actual 2x6 rafters 24 oc sheathed with 1 2 plywood and covered with asphalt shingles.

The gable truss should be the same scissor profile as the common scissor. Old cottage cathedral ceiling i have a 50 year old seasonal cottage in a northern climate. A standard triangular roof known as a gable roof is framed using rafters which are diagonal members that support the roofing materials. Each truss is composed of two opposing rafters and a ceiling joist.