13/03/2026
It is useful to know the terminology of the building trade.
This is a traditional build.
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Our system is designed for owner builders
EAVES CROSS-SECTION AND ROOF FRAMING
This technical illustration provides a detailed cross-sectional view of a residential roof-to-wall connection. It demonstrates how the roof truss, exterior wall, and finishing components—such as the soffit and fascia—integrate to provide structural stability, moisture protection, and ventilation for a building.
SYSTEM COMPONENTS
• Roof Truss Assembly: The primary structural framework, consisting of the truss (top chord), the bottom chord, and a gusset plate that mechanically joins the lumber members at the heel joint.
• Wall Structure: Includes the vertical wall stud capped by a double top plate, which serves as the load-bearing surface for the roof assembly.
• Structural Hardware: A hurricane clip is used to provide a high-strength connection between the truss and the wall, resisting uplift forces from wind.
• Roofing Substrate: 7/16 OSB (Oriented Strand Board) sheathing is fastened to the rafter tail to provide a base for final roofing materials.
• Edge Protection: The drip edge and fascia cover (typically aluminum or vinyl) protect the fascia board and prevent water from wicking back into the wooden structure.
• Eaves and Ventilation: The soffit forms the underside of the overhang, supported by a 2x2 nailer attached to the wall. This area (the eaves) is critical for attic ventilation and protecting the exterior wall from shedding water.
SYSTEM OVERVIEW
The image serves as an educational blueprint for standard wood-frame construction. It highlights the transition from the vertical load-bearing elements of a wall to the sloped structural elements of a roof. By labeling each specific component—from the heavy-duty hurricane ties to the finishing fascia covers—the diagram emphasizes the importance of both structural integrity and "drying-in" a building to protect it from the elements.