How To Build Gambrel Roof Trusses For A Shed

They need to be secure for permanent use.

How to build gambrel roof trusses for a shed.

Once everything is in place get some scrap pieces of 2 4 and place each one along the framed truss to make an outline. 4 identical truss pieces for your gambrel shed roof. Use 1 1 2 finishing nails to lock the plywood into place. 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.

Lay a piece of 10 ft 5 ft 3 0 m 1 5 m plywood 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. This piece of plywood represents the dimensions for your roof and will serve as an assembly site for your rafters. Use 6 screws per gusset 3 into each beam.

Save 8 rafter beams for later. Attach the truss firmly to your shed. Transfer measurements to 2x4 s. Lay down the piece of plywood in an area with ample space.

Build a temporary truss jig by screwing 2 long 2 4 s to adjacent edges of the floor at 90 degrees to each other. Once all pieces are cut we can lay them out together so that they form a 10 wide gambrel truss. 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. Align them to the edges of the floor and attach with 3 to 4 screws along their length.

It also helps to add metal angle brackets at the bearing points where your trusses meet your shed. This way the floor acts as a giant builders square. Our next step is to transfer these measurements to a 2x4 and cut 4 pieces to form our first truss. If you are building a gambrel roofed shed then this is likely what you would use coupled with a bottom chord.

How to build simple roof truss for shed. Find three pieces of cardboard and lay them on the ground. Continue the project by fitting the soffit on the opposite side of the shed. Next lay four of the cut boards on top of the cardboard in the manner in which they will be assembled.

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. 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.