Flat Roof Overhang Framing Details

2x framing wood joists timber framing laminated beams steel concrete or sips.

Flat roof overhang framing details.

The size of the roof overhang you choose depends largely on the style of your shed s roof. In designing the overhanging part of a. Because this style of a shed has a flat roof it can facilitate a wider overhang which is ideal for storage. For gabled roofs the roof rafters extending beyond.

An eave typically has a metal edge flashing and gutter that are attached to a wood fascia trim board. The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value. Contemporary designers frequently aim to produce the same clear and simplified forms that appeared at the beginning of the 20th century but are now free to use a wide range of new materials and construction techniques that reflect present day technology. It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c.

But are they really necessary. They can also include certain architectural features that make overhangs more than just functional parts of the home. Overhangs are extensions of the roof beyond the exterior wall i e the. 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.

Flat roof framing is relatively straightforward. If you must use a flat soffit stop the flat portion of the soffit at the wall to align with the corner board. Flat soffit stopping at end wall. Depending on the span many different materials can frame a flat roof.

This is a detail to avoid at all costs. Today flat roofs are used by architects for the same reasons that they became a cornerstone of modernist architecture. 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. Eaves are located at the down slope edge of a sloped roof and serve as the transition between the roof and fascia wall.

If you are not able to use an angled soffit use one of the two flat soffit details illustrated below. Roof overhangs at the eaves and rakes protect the walls below from rain and sun. With a flat shed roof the roof simply extends past the wall plate to provide an overhang. There is no reason to use a pork chop eave.