Pitched Roof Eaves Detail

The wallplate is then used to secure the rafter to.

Pitched roof eaves detail.

Eaves detail the eaves detail shows where the roof members and coverings meet the wall of the dwelling. The wallplate is secured to the internal wall separated by dpc. Fix a plywood board or proprietary tray to provide continuous support to underlay to prevent water retaining troughs. This first installment of a two part series focuses on eaves that do not return onto the gable.

The cavity is closed with a proprietary cavity closer. 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. 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.

Fix a rafter spacer tray to provide a clear air path between underlay and insulation. If a sprocketted or bell cast detail is used then eaves courses should be no lower than the minimum recommended roof pitch. 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. A notch is taken out of the rafter known as the birds mouth.