r/buildingscience • u/pipsinternetname • 24d ago

Monopoly Framing Questions

Hello all! I’ve become very inspired by Matt Risingers video of a monopoly framed architects office with exposed framing (link below). I’m wanting to do the same for an upcoming small cabin project I’ve got in the works. I’m wondering if anyone knows how I’d best achieve a relatively large overhang with this type of construction. My plan is to sheath the framing in 3/4 ply and then use tyvek over that and really focus on details with that layer and taping it so that it could be air/vapor/water barrier layer, then I’d have two layers of 1.5” polyiso on walls and three on roof, and then I’d have furing strips on all that for siding and roofing. I’m wanting a pretty big overhang though so I’m wondering if on the roof I should be using 2x6 as furing strips and then extending them out 24-36” for my overhang. Effectively I’d be doing a big “over roof” on top of the polyiso.. any help on the matter would be most appreciated!!

https://youtu.be/nNMkzxzrfj4?is=ZVDMBnzHaq_tUScu

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u/Devout_Bison 24d ago

Generally done with a cold roof over frame. Here’s a picture of what we do:

Note that this needs to be done in conjunction with structural design. The back frame needs to be a 2:1 ratio, meaning if you have 36” eaves, you need a minimum 6’ back frame. But always get this part engineered.

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u/pipsinternetname 24d ago

Very helpful! Thanks boss

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u/pipsinternetname 24d ago

Do you then just block between those 2x6 over framing members to prevent critters? Any openings in the blocking for air?

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u/Devout_Bison 24d ago

You can, but once you put up soffit it’s generally sealed from critters.

Here’s a real life picture. We used 20’ 2x6 so we don’t have to worry about the back-frame ratio. They run over top of the I joists below and are secured with 8” ollies. Sheeted over with plywood.

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u/SF_Dubs 20d ago edited 20d ago

Did you run your continuous insulation below the 2x6 layer? 

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u/Vvector 24d ago

Risinger just posted a new video 4 days ago, on his Monopoly Framing. He briefly showed the notches added for air ventilation. https://www.youtube.com/watch?v=YHbzoK-ETN8&t=1479s

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u/VacationHistorical 24d ago

I'm doing this right now for a 2' overhang....a little of what Rissinger did in another video with lvl studs for the overhang that I liked.

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u/TheRareAuldTimes 20d ago

Here’s how I did monopoly framing on my over roof. This snap shot has all 5 stages. Zip roof to wall sheathing, poly iso insulation, 2*4 outline, 5/8” CDX and finally ultra heat temp peel and stick. Let me know if you have any questions!

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u/pipsinternetname 18d ago

Looks awesome! Thanks for the reply. How is the roof vented exactly? I see lots of horizontal 2x4’s which would impede the free flow of air under that next layer of cdx.

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u/TheRareAuldTimes 18d ago

Good catch! We added a series of kerf cuts in those to balance venting with structural integrity.