Gable Roof Overhang Framing Details

When designing a gable end eave without a return the dimensions to look at are the width of the trim set between 6 in.

Gable roof overhang framing details. To 18 in depending on the style of the building. The biggest problems with gable end overhang strength occur if your roof overhang is greater than about 12 inches. The picture above shows the plan view of a gable roof ladder trusses are made up using four noggins bridging at each corner to support a rafter outside the building. The rise or height of the roof at its peak is the altitude of the triangle.

Use 1 2 in 1 3 cm plywood to cover the entire surface of your roof. If you re a little unsure of your rough framing or roofing skills hire a carpenter to help with this phase of the roof dormer project. In designing the overhanging part of a. This can be from two causes.

Avoid gable ends that are over 8 in. That rafter outside forms the overhang for the barge boards to fix to and so the soffit boards and ventilation are continuous all the way. The other common wind related failure at gable ends is uplift of the roof decking at the overhang. After the gable is framed lookouts extend from the first rafter inside the gable wall out over the plates to support the overhanging barge rafter.

Use construction nails 6 in 15 cm apart to secure the plywood around the outer perimeter and along each support. The gable dormers we built are 6 ft. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Put roof sheathing on top of your roof.

Of the many ways that gable end overhangs are built the two most common ways are the use of ladder details and outriggers ladder details are usually adequate if the overhang is less than about 8 inches although they are frequently used for longer overhangs. Framing a gable roof building a gable with barge end purlin struts and collar ties. Place a piece of the plywood on the bottom corner of your roof making sure the edges are on a rafter beam. The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value.

Uplift of roof decking at the overhang. Framing a dropped gable wall one of the keys to framing the rake with my system is building a dropped gable end wall the top of which is 3 1 2 inches below the tops of the rafters. And the line length measurement from the roof peak to the building wall is the hypotenuse. Wide especially when the eave overhang is less than 12 in.

Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof. Wide about 9 ft. They can also include certain architectural features that make overhangs more than just functional parts of the home. The run or half the building span is the base of the triangle.