Flat Roof Overhang Detail

I recently built a small outbuilding with a 6 in 12 pitch roof that offers a perfect example for showing the process i use to build eaves and rakes.

Flat roof overhang detail. There are two types of roof overhangs two consider. Without this detail water leaving the roof edge wants to run down building fascias soffits and walls sometimes even entering and damaging the structure. Wi overhang roof apron gutter downspout system cont 2x8 rough fascia. I note that was an easier job than yours because that building sports no gutters just a nice 24 roof overhang.

Overhangs add character and help your shed avoid that boxy flat look. The siding underneath the overhang is known as the soffit. There is no reason to use a pork chop eave. If the roof overhang is not big enough then the only way to protect these windows doors and entryways is by recessing them into the thick exterior wall or by installing special casing and flashing for each door or entryway.

Types of roof overhangs. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. You may want one or the other or both. In general roof overhangs offer an effective solution for how to protect windows doors and entryways.

This is a detail to avoid at all costs. Of course you don t need to live in a modern house to deal with a flat roof. Flat soffit stopping at end wall. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

If you must use a flat soffit stop the flat portion of the soffit at the wall to align with the corner board. On 2020 09 13 by scott. Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. Start with the rafter tails the main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall.

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. A rake overhang is created by extending the roof beyond the gables of your shed. The length of the overhang depends primarily on the climate. Overhangs are common in most house designs providing protection against both wind and rain.