overhang shortcut or rebuild waiting to happen?

[TengaarWarrior]

Building out a 16x16 with a steep roof and I was gonna do the overhang with 1x4 purlins sticking out 11" plus an extra inch of metal. But honestly, the more I look at it, the more it feels like a sketchy workaround.

If I scrap the purlins and just let the 5/8" ply run 11" out, maybe it works short term... but plywood edges aren't meant to hang out there unsupported forever. Between moisture, wind, and weight from snow/ice, that's a lot of stress on a thin edge. Seems like it'd start sagging or delaminating after a couple seasons. Has anyone pulled this off without a ladder frame or fascia? Or am I right that the "easy way" here just leads to rebuilding it sooner than later?

 

[eDJ_]

Biggest issue I see is making sure you have drip edging installed so that water won't lap up under the shingles and begin to rot the ply wood, wafer board or whatever you are using for the sheeting of your roof.

Once you get this roof built, you could make a cardboard template that would allow for a 2x4 fascia at the outer edge. Then finish the triangle. You may need to have an adjustable power miter saw to make these support triangles. They would fill in the space under the overhang so that you could brace the overhang. Then you could use thin plywood to box in the overhang.

 

[microhaven]

Great breakdown. That drip edge really plays a crucial role in keeping the roof healthy for the long haul. Plus, using those support triangles to template the fascia really gives the overhang a nice, clean, and sturdy look. And I love the idea of finishing it off with some thin plywood, super smart choice