Pitched Roof Eaves Detail

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.

Pitched roof eaves detail.

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 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. Fix a rafter spacer tray to provide a clear air path between underlay and insulation. 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.

The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. Eaves detail the eaves detail shows where the roof members and coverings meet the wall of the dwelling. 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.

Fix a plywood board or proprietary tray to provide continuous support to underlay to prevent water retaining troughs. A notch is taken out of the rafter known as the birds mouth. The wallplate is then used to secure the rafter to. This first installment of a two part series focuses on eaves that do not return onto the gable.