How To Build Gambrel Roof Trusses For A Shed

Repeat this to join sets of 4 rafter beams together with 3 gussets then flip each one over and add 3 more gussets on the other side except for 2 arches which only have gussets on one side.

How to build gambrel roof trusses for a shed.

Find three pieces of cardboard and lay them on the ground. However a gambrel truss roof uses a howe truss design beneath the top chords of the gambrel to reinforce the roof structure and extend the span. Continue the project by fitting the soffit on the opposite side of the shed. If you are building a gambrel roofed shed then this is likely what you would use coupled with a bottom chord.

4 identical truss pieces for your gambrel shed roof. Use 1 1 2 finishing nails to lock the plywood into place. Save 8 rafter beams for later. Our next step is to transfer these measurements to a 2x4 and cut 4 pieces to form our first truss.

Lay a piece of 10 ft 5 ft 3 0 m 1 5 m plywood on the floor. Nail in place to attach the trusses to the foundation of your shed and to keep them in place for the addition of your roof. Once all pieces are cut we can lay them out together so that they form a 10 wide gambrel truss. This way the floor acts as a giant builders square.

Attach the truss firmly to your shed. They need to be secure for permanent use. Transfer measurements to 2x4 s. Once everything is in place get some scrap pieces of 2 4 and place each one along the framed truss to make an outline.

Build a temporary truss jig by screwing 2 long 2 4 s to adjacent edges of the floor at 90 degrees to each other. The entire truss should be laying flat on the shed floor exactly as it will fit for the roof but it will be lying on the floor. Using a pen trace the inside and outside bends of the trusses on the cardboard making what should look like a double l shape. These will be used to make the roof ends.

How to build simple roof truss for shed. It also helps to add metal angle brackets at the bearing points where your trusses meet your shed. Align them to the edges of the floor and attach with 3 to 4 screws along their length. This piece of plywood represents the dimensions for your roof and will serve as an assembly site for your rafters.

If you have a 10 ft 3 0 m wide shed your roof will be 10 ft 3 0 m wide and 5 ft 1 5 m tall. Use 6 screws per gusset 3 into each beam.