Gable Roof Eave Detail

Flashing 1 is a typical apron roof flashing.

Gable roof eave detail.

Normally down though small up flows occur by capillary action. Eaves with over fascia ventilation. The eave roof and gable. 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.

If a sprocketted or bell cast detail is used then eaves courses should beno lower than the minimum recommended roof pitch. Set top of fascia board at correct level and fit ventilator in accordance with manufacturers recommendations. This is the portion of the roof that protrudes beyond the side of a house or building. Gables typically provided an 8 200 mm overhang and were lined to the underside but there were wide variations in how the top or apex of the gable was treated figures 2 7.

The cleanest look for a gable end with a closed eave is to angle the soffit therefore eliminating the need to resolve the eave at the gable end. Eaves courses of tiles should be at same pitch as general tiling. The sequence of assembly of flashing such a junction is critical to achieving a weathertight detail. Gable end details for closed eaves.

When understanding all metal flashings on buildings it makes sense to consider the direction in which water wants to flow. They were typically used above the bay windows but a small number of hipped roofs over bay windows were also built. Figure 3 shows the shapes of each of the flashings and how they should be folded. This configuration gives the look of an open eave but it has the same benefits ease of maintenance and energy performance as a closed eave.

More refined details will have the return on the gable end smaller than the eave overhang but there still needs to be a return. Refer to my architectural roof types blog. Figures 2 a c show the sequence for flashing the junction between the gable and ridge where there is no eave. An eave is defined as the edge of the roof that overhangs the face of a wall.

In contrast a gable or rake is the overhang of a building that occurs on the side that is topped by a gable roof. 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. I prefer to install the gable drip edge under the felt though that detail is less critical than at the lower roof edge or eaves.