Open Eaves Roof Detail

Fix timber fillet to set eaves courses of tiles at same pitch as general tiling.

Open eaves roof detail.

A closed eave has very little or no overhang extension beyond the siding. Closed eaves with angled soffit closed eaves with flat soffit and no raised heel. Some older homes have open eaves. Open eaves with ventilating rafter tray.

Open eaves with ventilating rafter tray. When designing an open eave with roof trusses make sure that you raise the heel of the truss and use a thicker top chord. If a sprocketted or bell cast detail is used then eaves courses should be no lower than the minimum recommended roof pitch. Doing so raises the eave which prevents it from conflicting with the window head height.

I recently built a small outbuilding with a 6 in 12 pitch roof that offers a perfect example for showing the process i use to build eaves and rakes. Types of eaves. A roof can come to an end in basically three ways. If a sprocketted or bell cast detail is used then eaves courses should be no lower than the minimum recommended roof pitch.

Closed eaves may be wide or narrow depending on the roof design. In an open eave design the roof rafters or joists and roof sheathing are visible. An open eave has a pronounced overhang often revealing projecting roof beams or brackets. With a soffited eave design the roof rafters and sheathing are hidden through the use of a panel or boards that extend horizontally from the edge of the roof typically being attached to the bottom of the fascia back to the exterior wall.

A ledger plate is fastened to the wall to attach the soffit at that location. Start with the rafter tails the main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. A box eave is enclosed with a soffit. These can be repaired or soffits can be installed to create closed eaves.

Fix timber fillet to set eaves courses of tiles at same pitch as general tiling. From left to right. Open eaves with trusses.