Interior Ridge Beam For Vaulted Ceiling Below Roof Line

A vaulted roof features angled rafters that rest on wall plates and connect at the top to a ridge beam.

Interior ridge beam for vaulted ceiling below roof line.

The new roof will span along the same footprint of the existing dwelling and have a pitch of 5 12. These horizontal framing members tie a building s outer walls together and resist the outward force exerted by the roof rafters in conventional framing. Rafters used to frame a vaulted roof are typically larger than rafters used to frame a roof that relies on ceiling joists for support. I am in the process of designing a cathedral ceiling for an attic addition.

The first step is the positioning of a substantial ridge beam. In the case of a cathedral vault where the interior ceiling is parallel to the exterior roof line installing skylights is a simple process. The existing dwellling is a double brick construction 19 feet wide and 29 feet long. When drywalling we screw it off and use paper tape not mesh at the ridge.

One theory is that the one side of the ceiling is the roof rafters and the other are vaulted ceiling joists so one side gets hotter and colder than the other. Looks to have a 2x6 coming down from the peak of the roof at the ridge board down to the beam. This new ridge beam labeled a s4 in structural drawing would carry the roof and would be installed below the ridge board. The ceiling joist 2x4s are running at right angles to the beam and rafters across the 12ft span of the room.

40 minute followed by a top coat and paint. Without joists the walls can bow outward and the roof ridge line may sag. I need to degign a ridge beam that will support my rafters 16 centers. Dan the horizontal slats resting on the roof joists replaced your ridge board not the best thing to do but it is an alternative.

The thickness of the roof depends on the dimensions of the lumber used to construct the. The trick in framing a vaulted ceiling is figuring out what to do with the ceiling joists. The existing ridge board merely tied the rafters together it didn t actually support the roof. The new structure for the vaulted ceiling would entail a 4x12 structural ridge beam.

There s no ridge beam or ridge board.