Gable Roof Eave Detail

The 12 12 roof pitch is also known as a square pitch roof since a 90 degree angle is formed at the peak of such roofs.

Gable roof eave detail.

Most gable roofs also have a rake cornice or rake extension formed on 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 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. Architectural details direct 903 356 2158.

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. Click to enlarge any image. Fix a plywood board or proprietary tray to provide continuous support to underlay to prevent water retaining troughs. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

Select eave detail overhangs typically range from 9 to 18 in depth. An eave is defined as the edge of the roof that overhangs the face of a wall. 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.

Refer to my architectural roof types blog. In the gable the frieze can either match the horizontal frieze on the rest of the building or it can be reduced one step in dimensional lumber. A gable roof has a cornice along the side walls formed at the rafter ends. Remember the roof on the return is there just to shed a small amount of water.

This is created by extending the rafters out past the building ends. The final step is putting the roof on the eave and addressing what happens in the gable itself. Boxed eave detail works for both hip and gable roofs. Do not set it to match the main roof slope of the house.

In contrast a gable or rake is the overhang of a building that occurs on the side that is topped by a gable roof. Roof drip edge flashing at roof eaves gable ends roof drip edge flashing serves multiple functions on a building the foremost of which is to assist water in leaving the roof edge with minimum damage to other building components by directing the water off of the roof and into the gutter. If running trim is going to be used. Running trim can be used along the eaves of your gable either below a gable decoration or by themselves.

A slight return just enough to keep water from pooling is all you need. This is the portion of the roof that protrudes beyond the side of a house or building.