Gable Roof Truss Framing

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 truss framing.

Gable roof framing calculator plan diagram with full dimensions. 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 around the structure. Gable trusses are more expensive than common structural trusses because more lumber is required. This roof truss is only one angle and a board that goes from high to low and back to front.

Then the barge or fly rafter is attached to the. Then a 2 4 outlooker is placed over the dropped gable and butted into the side of the adjacent full height truss. Lay the first piece of siding on the truss assembly and allow 2 inches of overhang below the bottom of the simulated top plate. How to build gable roof trusses.

Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. Nail in place then attach the rest of the siding in place. When making a selection below to narrow your results down each selection made will reload the page to display the desired results. Framing a gable roof building a gable with barge end purlin struts and collar ties.

For a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. Ladder trusses are made up using four noggins bridging at each corner to support a rafter outside the building. A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors.

Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters. In addition to the lean to shed there is a gable shed roof. This roof is more complex because of the two different angles with the roof. If a truss roof is used with this method the gable truss is manufactured 3 shorter than the others.

A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches. Post frame roof truss 23 residential end frame 1 residential roof truss 88 style. The picture above shows the plan view of a gable roof. Connection between top plate and gable end framing.

Gable roof truss calculator.