Roof Eave Framing Detail

Before manufactured trusses the simplest roof construction involved extending exposed rafter tails beyond the walls of the house.

Roof eave framing detail.

The first approach to achieving a strong durable struc. 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. And the line length measurement from the roof peak to the building wall is the hypotenuse. A gable roof has a cornice along the side walls formed at the rafter ends.

Start with roof framing. Details for conventional wood frame construction. The design of your eave is dictated by the construction of your roof. Mc08 roof layout.

Mc10a down slope eave details. Soffits are actually part of the cornice or eave the point where the roof projection and the side walls of the building meet. The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. Hip roofs have a continuous cornice that extends completely around the building.

The rise or height of the roof at its peak is the altitude of the triangle. Mc08a roof layout quick reference. Mc10b eave flush wall. Mc10 raised fascia.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. American forest paper association wood construction data 1. Mc10c low slope ventilated eave detail.