Overhang Flat Roof Framing Details

With composite siding such as boral s truexterior siding over a ventilated rain screen and with properly executed flashing at the windows and doors the walls on the fhb house will be able to handle rain just fine.

Overhang flat roof framing details. For gabled roofs the roof rafters extending beyond. Box beam gable framing new gable overhang is framed in the form of a box beam hanging off of a new layer of roof plywood roof sheathing cantilevered over the top of the 3 layers of rigid insulation. Think of a flattened hip roof. The rise or height of the roof at its peak is the altitude of the triangle.

Metal panels untreated wood panels and vinyl attic vents figure 1. A measurement of roof area that equals 100 square feet an area 10 feet by 10 feet. The run or half the building span is the base of the triangle. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c. 2x framing wood joists timber framing laminated beams steel concrete or sips. The size of the roof overhang you choose depends largely on the style of your shed s roof. Soffits are commonly constructed from fiber cement panels metal panels stucco vinyl panels or wood sheathing.

Slope a roof s slope is the number of inches it rises for every 12 inches of horizontal run a roof with a 4 in 12 slope rises 4 inches for every 12 inches of horizontal run. In designing the overhanging part of a. With a flat shed roof the roof simply extends past the wall plate to provide an overhang. The same roof has a 4 12 or 1 3 pitch.

Flat roof framing is relatively straightforward. Roof overhangs at the eaves and rakes protect the walls below from rain and sun. A flat roof has a slope of 1 8 per foot to 2 12. The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Because this style of a shed has a flat roof it can facilitate a wider overhang which is ideal for storage. Roof sheathing engineered roof trusses wi overhang roof apron gutter downspout system cont 2x8 rough fascia cont 2x2 soffit framing f i fascia vented soffit system eave. If you build a flat roof try to have it slope in multiple directions to drains or gutters.

The exposed edges of the 3 layers of rigid insulation are no longer exposed. But are they really necessary. And the line length measurement from the roof peak to the building wall is the hypotenuse.