Step 8: Frame And Sheet The Roof

This step is basically the same for both the tall barn style sheds and the deluxe gable roof sheds. The difference is the shape of the truss. The gable has 1 slope per side where the tall barn has either 2 or 3 different slopes per side depending on if you build with or without overhang.

Figure 8.1, Roof Framing Details


Look at Figure 8.1 and notice the components are the same. The only difference is the shape of the trusses.

  • Flying trusses
  • Flying rafters
  • Truss end boards
  • Eave boards


There are 2 or 3 different types of trusses common to both sheds.

  • End trusses
  • Regular trusses between the end trusses
  • Flying trusses for all Deluxe gable sheds and Tall barn style sheds with overhang

See Step 3: Build the trusses

  • Regular trusses go in between the end trusses at 16 or 24 inch on center. They have OSB webbing on both sides.
  • End trusses have OSB webbing on one side and are sheeted over studs at 16 or 24 inch on center on the other side.
  • For sheds with overhang, flying trusses don’t have any internal structure, have OSB webbing on the back side, form the edge of the overhang and are supported by the end boards and flying rafters.

Overall Steps

  • check the square
  • mark layout if different from wall studs
  • brace on front and back wall, remember 1/2 inch spacer
  • end truss, position upside down on top plates, roll into place, position side to side and nail into place, repeat for other end, note how siding slides between brace with spacer
  • string line along the ends of the trusses (only for overhang)
  • inside trusses (done for no-overhang sheds)
  • end boards, determine overhang, cut and layout, install
  • loft, floor, sheeting, use it to make the rest easier
  • flying rafters, measure and cut to length, set truss spacing as you install
  • flying trusses
  • crows beak
  • sheet