How To Build Gambrel Roof Trusses For A Shed

Align them to the edges of the floor and attach with 3 to 4 screws along their length.

How to build gambrel roof trusses for a shed.

Build a temporary truss jig by screwing 2 long 2 4 s to adjacent edges of the floor at 90 degrees to each other. Lay down the piece of plywood in an area with ample space. 4 identical truss pieces for your gambrel shed roof. 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.

Once everything is in place get some scrap pieces of 2 4 and place each one along the framed truss to make an outline. The gambrel only uses two roof beams along with gusset joints. Next lay four of the cut boards on top of the cardboard in the manner in which they will be assembled. Most of your pre made trusses that are designed as a gambrel consist of roughly a 20 12 bottom pitch and a 4 12 top pitch.

Transfer measurements to 2x4 s. This piece of plywood represents the dimensions for your roof and will serve as an assembly site for your rafters. 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. This way the floor acts as a giant builders square.

Simple steps on how to build a shed roof gambrel style using pre built trusses. What is the advantage of a gambrel roof. So you have a really steep bottom pitch and a really flat top pitch. Once all pieces are cut we can lay them out together so that they form a 10 wide gambrel truss.

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.