Framing Eaves Roof

How to box frame roof eaves written by piyush jain on feb 07 2010.

Framing eaves roof.

And the line length measurement from the roof peak to the building wall is the hypotenuse. If the lower section of the roof rafters or rafter tail extends beyond the exterior wall the projection forms an overhang or eave. A building with a hip roof has more eaves than a building with a gable roof. A rake on the gable end of the roof can be created with the construction of additional roof framing.

What hip roofs demand in extra framing. In the 1950s era zimmerman house in new hampshire wright used the roof eave as part of the usonian function. In wood frame construction the primary structural members of a gabled roof frame are the ridge board and the rafters. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

The rise or height of the roof at its peak is the altitude of the triangle. The run or half the building span is the base of the triangle. On both ends of the roof i let the subfascia run out beyond the anticipated width of the rakes. When designing an open eave with roof trusses make sure that you raise the heel of the truss and use a thicker top chord.

Some counties mandate that eaves be boxed as a. To ensure our content is always up to date with current information best practices and professional advice articles are routinely reviewed by industry experts with years of hands on experience. Finish the eaves framing after ripping the top of the subfascia with a circular saw set to 26 5 degrees i flushed the top ripped edge with the top of the plumb cut on the rafters and screwed the subfascia to the rafter tails. Overhanging eaves are characteristic of frank lloyd wright s prairie house style.

Before roof trusses the exposed rafter tails were an extension of the roof framing. Box frame roof eaves wind can blow fire embers inside an attic vent so sometimes homeowners in high wind dry areas choose to box in their roof eaves. Home eaves are considered heat traps so closing the space with fascia board and soffit panels helps to prevent a fire from igniting inside a home. Open eaves with trusses.

Doing so raises the eave which. The ceiling joists pushed the rafters up and gave extra height to the building. When the architect had the chance wright made the eave more than a byproduct of roof construction.