How To Design And Build A Double Angle Roof Overhang - Low Sloping Pitch
The video offers three different methods to achieve this design.
The first method focuses on creating a strong structure, even if it may not be the most aesthetically pleasing from below. In this method, the rafter extends past the wall, providing a nailing surface for the board used to change the roof pitch. A scrap piece can be used to fill in any gaps and provide additional strength.
The recommendation is to use a six-foot board that cantilevers out two feet and goes back four feet. However, building codes may require a stronger design where the board cantilevers out two feet and goes back six feet. Sixteen penny nails spaced twelve inches on center are recommended for securing the boards. Lookouts are also recommended to be installed.
The second method prioritizes aesthetics by creating an exposed overhang from the bottom. Here, six-foot long two-by-eights are used without being shaped. A lookout is run to the center to provide nailing for the fascia board on both sides. Shaped blocks are used to support the rafters at the gable ends. It is important to check with local building authorities before implementing this method throughout the entire project. Angled framing anchors and hurricane ties or straps can be installed for additional support.
The third method combines the strengths of the first two methods. It creates a strong structure with a more finished look underneath. Similar to the first method, the rafter ties need to be positioned correctly to avoid weakening the structure. Blocks are used to support the overhangs, and the sheathing needs to break over the blocks to create a strong connection. Here, the lookout boards are installed on top of the framing plate.
Seat cuts are made in all of the overhang boards to ensure the sheathing breaks on the center of the blocks. This method also involves lowering the rafter by cutting a seat cut in the framing extension boards for the overhang. By doing so, the upper and lower pieces of the roof will break halfway on the block.
Overall, this video provides valuable insights into designing and building a double angle roof overhang with a low sloping pitch. The different methods offer options that prioritize strength, aesthetics, or a combination of both. It is important to consider local building codes and consult with a structural engineer before starting any construction project.
