Pitched Roof Eaves Detail

If a sprocketted or bell cast detail is used then eaves courses should be no lower than the minimum recommended roof pitch.

Pitched roof eaves detail.

The wallplate is then used to secure the rafter to. A notch is taken out of the rafter known as the birds mouth. Fix a rafter spacer tray to provide a clear air path between underlay and insulation. In some cases a closed or flush eaves can be designed which stops the rafters and ceiling joists at the face of the external wall where a fascia board is then fixed to the ends of the joists and the rafters.

The wallplate is secured to the internal wall separated by dpc. Published on apr 7 2020 this video is about drawing a pitched roof eaves detail showing how the truss connects to the top of the wall. Fix a plywood board or proprietary tray to provide continuous support to underlay to prevent water retaining troughs. The three primary variables to consider when designing the eaves for a gable roof are the width of the gable trim the projection of the eaves and the details at the corner of the gable ends.

The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. The eaves of a pitched roof tend to extend around 150 300mm beyond the external face of the wall to provide protection from rain. The cavity is closed with a proprietary cavity closer. To determine exactly what the rafter tail will look like i always make a full size drawing on a scrap of plywood of all the eaves elements including framing and finish materials see illustration above.