Roof Overhang Framing Details

9 3 built up roofing because this is a wood detailing manual this section will only attempt to highlight some basic edge conditions that often adversely affect adjacent wood construction.

Roof overhang framing details. Overhangs can vary in width from a few inches to several feet. As shown earlier in figure 2 there are some prescriptive details in the irc for cold formed steel construction. Eaves form the overhang to distribute water clear of the walls. In this system the outer framing under the overhanging roof deck sheathing is formed by two parallel long 2x4 s or 2x6 s that are connected together laterally by short blocks like the rungs of a ladder.

That is their functional purpose. An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building. At the rakes however with a nod to yankee frugality and clean modern lines we kept the roof trim as close to flush as practical while still allowing for a rain screen channel ventilated at the top as well as the bottom. An overhang is the portion of the roof that runs past the wall providing coverage for the space around the foundation of your shed.

These are limited to an overhang length of 12 and apply for up to 139 miles per hour ultimate wind speed. Ladder details are usually adequate if the overhang is less than about 8 inches although they are frequently used for longer overhangs. Start with roof framing the design of your eave is dictated by the construction of your roof. The ladder detail is frequently used when the builder continues the same truss size or rafter size all the way through the gable end.

Add the length of the overhang beyond this mark and. The following conceptual details figures 9 1 to 9 6 show some of the typical conditions commonly encountered. Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge. For wood framed construction comparable details are contained in the american wood council wood frame construction manual.

Benefits of roof overhang on sheds. For the cantilevered outlooker method connection design loads are published for various wind speeds. Before manufactured trusses the simplest roof construction involved extending exposed rafter tails beyond the walls of the house. On sheds and homes overhangs are commonly referred to as eaves or rakes depending on where they are located.

Eave overhang detail with that in mind we kept a roof overhang at the eaves as it provides a nice shadow line and protects the second floor windows from a bit of the summer sun. They also help to frame windows on upper stories. 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.