Building Roof Eaves After the House is Weather Tight (Bolt On)

This is the only video I found where someone really goes through the monopoly house + bolt-on eaves approach to allow for better air sealing. I saw this mentioned by Matt Risinger on his build but no details were provided. (or maybe I missed it) Thanks for going into detail here!

So helpful and the detail and keeping it honest about what you would do differently. We also appreciate your "delivery", organization and the way you "speak" to your viewers. IT is like you are the friendly neighbour next door.☺🇨🇦🍁

Steve Baczek, architect, showed a way for the air sealing rafter issue as far as interior air sealing and Continuity. It is in his hilltop house build video. To keep the exterior sheathing continued air tight to the ceiling of any of the rooms he added a 16 foot wide long piece of plywood or zip sheathing, whatever your sheathing is, and placed it on the Top plate for the rafters to rest on.. It is like a 3rd top plate. You then tape the wall sheathing to the edge of the incoming flat 16 inch for air tightness. What the rest of the 16 inch wide piece is used for in the inside, on the ceiling, is to acoustical seal it to the ceiling drywall! The remaining bit of the 16 inch wide piece is like a surface to help get the drywall attached better, and you get air sealing continuity from wall to ceiling as well. Super smart! Thank you for sharing and you are doing a great job....and your explain things so well....a talent this viewer appreciates. ☺️ 👍💯 🙏🇨🇦

Great discussion and demonstration of the various steps. We did this on my home in 2012 in order to create "fake" exposed rafter tails, which are stained 4x6 lumber about 16" long. It worked fine in the end and looks amazing, but I agree, it is a lot of extra work. I've since built a few other buildings with traditional overhangs using rafters, and it's so much easier. Anyone who wants to attempt this also needs to think about snow loads and wind uplift loads on the eaves and overhangs, which can be substantial.

Excellent video. Definitely watch until the end to make sure you listen to the advice. I'm very appreciative of the videos out there that explain something that is complex... need more of those. Especially if you're caught in a situation like this. Recapping some issues: reverse lap on the roof paper, strength of eves (stiffened by the return board however!), and lots of extra work (compared to just having the rafters (or trusses) do this extension for you.

Wow! Surprise ending Corbett! Thanks for the honesty. I haven't tried either but I can certainly see your point that slapping some more tape and caulk would be easier than that whole eave process. Looks nice though. Good job!

I love over building stuff. This is an amazing channel!

I LOVE how thorough, honest, and concise you are, sir. Being in the middle of a "chainsaw retrofit", as Dr. Lstiburek calls it, I was quite sad to hear you didn't feel that it was worth it in the end, but I so appreciate your insight and transparency. I raise my glass to folks like you going the extra mile in the name of good building science practice! :D

Thanks I have been going back and forth over how to engineer my overhangs on a sealed house. After many different videos I feel confident in how to address this feature.

I was curious about this cuz i-joists require plenty of stiffeners & scabbed-on junk for the eaves, thanks for doing the experiment!!!

Although brevity is NOT his strong suit, this has provided me with exactly the kind of education on adding a soffit I needed for my application. Thank you for posting.

Thank you for the update Corbett! You convinced me of the "bolt-on" overhangs, but your point of air sealing being the lesser evil is well taken. Keep up the good work! We are in the planning stages of building a house and your videos have been invaluable!

I'm surprised you didn't bevel the top edge of the fascia! Very cool. This concept is new to me and makes total sense. One of the reasons why I won't design overhangs again is for easier air sealing, but this gives another option. Thank you for posting.

Great information. I am trying to add eaves on my mobile home. It has a pitched roof but unfortunately when it was built in 1987 the building codes allowed them to barely come off the wall enough just to add flashing. I have already had to replace some of the siding. I have looked on a number of Youtube videos and this is one of the best ones.

8:52 I thought I was the only crazy person in the world to do that :) Glad to be not alone.

Thank you for the honest feedback at end...helps us to put things in perspective.

love your enthusiasm , thank you Corbett

I really enjoy your videos. Thank you. This one was very interesting. I got the most out of it during your end of video wrap-up. I will be remodeling my home next year.. I will add the two or three feet extra as part of the rafter system and not have to build up everything as you have done. Sage advice. Cheers John L Fairlawn Virginia USA

I have been waiting for this video, and much appreciated that you share your work and thoughts!! Your house looks rock solid. After watching your video, I am going to build overhang extended from roof rafters. Thanks so much!

Thanks for showing us this as I was also entertaining this idea. Lots of work to make this functional, looks like I'll go a different route.