Framing Gable Roof Overhangs

Deep overhangs need cantilevered support outlooks that tie into the roof framing
With the roof framed. You’re almost ready for sheathing. Before slapping down plywood, though, you need to frame the gable overhangs. 

In another animation, we assembled a simple ladder-block overhang and nailed it through the wall sheathing into a rafter. 

Subfascia ties together the bottom, and roof sheathing acts as a structural diaphragm above to form a torsion box of sorts.

This works great for small overhangs, but what if you want to upgrade to a deeper overhang?

How is that framed?

It will be done with a similar ladder frame, but the system is a little more involved than blocking.

It involves notching the outermost rafter to accept 2x4 outlooks.

The 3.5 x 1.5-inch notch should be spaced every two feet and placed to land where roof sheets will break.

2x4 outlooks should extend back to the second rafter and past the first one by whatever the overhang is minus the thickness of the subfascia. 

Make sure to square up the outlooks before nailing them through the inner rafter. Nail through the face of the outlook into the notch of the outer rafter, and you’re ready for subfascia.

Now you can slap those sheets down, staggering the rows, and keeping them on layout. With the roof sheathed, it’s time to take a break.

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[Dad-]

Thank You! I had a roofer come out to look at a leak and he started saying these words “overhang” “drip edge”. Etc…. I just nodded like I knew exactly what he was talking about. Thank you for explaining this to people like me!

[bobbypritchard]

Nice and concise! My kind of video right there, great job

[MustafaKhan-zeps]

du bist ganz toll und tolle Erklarungen💯

[ColinRBelle]

Its time to take a break... Right into the babahah~~

[RAWFIXIT]

Thank you for this explanation. I was thinking of using T&G as roof sheathing just around the parameter so it is visible from under the overhang. And then plywood for the rest of the roof. With either the ladder method or this method, does the T&G need to extend back to a second truss to tie it all together, or can the T&G just cover the overhang? This is just for a 10x10 shed. Hope that makes sense.

[anthonyfilipakis]

I am planning on adding an 7 inch overhang (final depth after siding will be 5 inches) to an existing structure that had no overhang. Is it ok to attach the 7” ladder block directly to i assume the front rafter and not have to notch at all? My contractor wants to build it out stacking 4 rafters nailed and screwed into eachother without the ladder technique but i thought that seemed unnecessarily heavy and not as strong. Thoughts?

Also, since its only 7”, would the sheathing still need to extend inward such as in ur animation or would smaller pieces added just on the new ladder block suffice. Thx

[LogansRun]

Great vid! If you wanted a longer or stronger overhang, would you build with 2x6 over a 2x4? Asking for a friend in coastal Florida😉

[morokeiboethia]

Would it be the same for a truss roof?

[peterhewitt]

is it really ok to notch out a 2x8 rafter like that for the 2x4 supports?

[redsresearch]

how big of a overhang can you have with blocking before you have to notch?

[JFAM]

Is this fine for snow loads? I live in North Idaho and I’m building a porch

[reegs]

What is the name of the software you are using?

[RogerPack]

Link to ladder block animation possible? :)

[KingofFools]

What's the deepest you can do an overhang with this method?

[joecox]

Thanks, yet it seems not scaled. if you cut 1.5" in 2x4 truss, it has no strength. so, you need 2x6 on end truss, yet 2x4 in common truss, anyway structure will not like your video, which might be ok for truss all use 2x6 but it is not the real world.