Flat Roof Overhang Framing Details

There is no reason to use a pork chop eave.

Flat roof overhang framing details.

Because this style of a shed has a flat roof it can facilitate a wider overhang which is ideal for storage. In designing the overhanging part of a. Depending on the span many different materials can frame a flat roof. 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.

An overhang protects the upper portion of the wall that it is attached to from rainfall and it also shades the windows under it from the sun. They can also include certain architectural features that make overhangs more than just functional parts of the home. 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. For gabled roofs the roof rafters extending beyond the wall caps creating an angled roof overhang on the eaves.

Roof overhangs at the eaves and rakes protect the walls below from rain and sun. If you must use a flat soffit stop the flat portion of the soffit at the wall to align with the corner board. But are they really necessary. 2x framing wood joists timber framing laminated beams steel concrete or sips.

With a flat shed roof the roof simply extends past the wall plate to provide an overhang. If you are not able to use an angled soffit use one of the two flat soffit details illustrated below. This is a detail to avoid at all costs. Flat soffit stopping at end wall.

It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c. Of course you don t need to live in a modern house to deal with a flat roof. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. Overhangs are extensions of the roof beyond the exterior wall i e the joists rafters or trusses and the decking they support cantilever past the wall.

Flat roof framing is relatively straightforward. The main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall.