How To Create The Jig For A Gable Roof Trusses

Take a 2 4 upper top plate and cut it to length a.

How to create the jig for a gable roof trusses.

Extend it above the floor 1 1 2 inches and secure to the edge of the floor with several 3 inch screws. Now cut two small pieces of wood and screw them to the outside of these marks. Mark the center of this 2 4 and attach it to the edge of the floor matching the above truss center line. Making sure that the truss pieces line up correctly and they will indeed fit your 10 wide shed we can make a jig using this first truss.

Place the osb or plywood on the top portion of the rafters and make sure that the edges run flush. The dimensions of your structure will determine the angles formed by the truss s top and bottom beams or chords. Then screw this jig assembly to the floor. The beam extends to the far end of the roof hanging over.

This sets the width of the truss. Measure and cut the pieces for the trusses. Cut 4 more truss pieces and line them up in your jig then continue nailing on gusset plates. Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters.

Start with the top corners of the roof first. Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. Place two pencil marks eight feet apart on the edge of the unused 2 4 top plate. A truss for a gable roof on one side of your home for example might need to be 15 feet 4 6 m long and 4 6 feet 1 2 1 8 m tall.

Nail osb or plywood onto the rafters to enclose the roof. You can do this by making a simple jig. After setting the second truss in the same manner workers attach a ridge beam to the peak of both trusses. Once in the proper place screw them into the floor making a frame or jig.

Once everything is in place get some scrap pieces of 2 4 and place each one along the framed truss to make an outline. Nail along the edges of the osb or plywood driving the nails into the rafters every 8 inches 20 cm with 8d common nails.