Hot always wants to be cold. Just like soup or coffee. Heat wants to chill out. Great info. I'm learning how to build using UA-cam. You and Risinger are awesome.
tHanks for the video. I didn't realize heat was always trying to get to cold. I struggle to understand all the insulation names etc. At the same time every few years the industry completely changes its best practice. I'm about to put R-max 1" foil faced panels on the outside of an existing house. (existing subsiding....caulked joints, Tyvek taped, Foil face taped, furring strips)
It is interesting @@stevenbaczekarchitect9431 . tHank you for the reply. I think in the long run, I'm going to put my finger in the air...see which way the wind is blowing and take my best guess. I'll be working on my house so it won't matter....and I'll learn something a season or two after I'm done. Have a super week!
I've read Dr. Joe Lstiburek comment on how using ZIP-R sheathing (with the layer of rigid insulation on the inside surface) can create problems with shear strength in the walls due to the fact that there can be 1/2-3 inches of foam between the OSB sheathing and the wall studs (I believe his exact quote was "Good luck getting shear values with that"). How do you compensate for the loss of shear values when you place foam between the exterior sheathing and the framing studs?
It certainly isn't the same as plywood or Zip right up against the stud face......but Huber Engineered Wood has published data that our engineer uses to design the shear resistance. It may be slightly less, but it is still possible. I have used Zip R Sheathing in High Wind Areas successfully with the appropriate engineering.
Is the poly iso a vapour barrier? Just trying to figure out the vapour barrier should be to the warm in winter side. From Canada here, if we use insulation outside up here it’s the Rockwool comfort board nailed on to sheathing.
That R sheathing at 1.5 inches of foam should be R6 not R9 as. stated. He misstated saying it’s R9. You can see the stamp on the sheathing indicating 1.5 inch at R6. Ok R value but excellent thermal decoupler
Hot always wants to be cold. Just like soup or coffee. Heat wants to chill out. Great info. I'm learning how to build using UA-cam. You and Risinger are awesome.
Thank you - the world of heat always wants to equalize....
tHanks for the video. I didn't realize heat was always trying to get to cold. I struggle to understand all the insulation names etc. At the same time every few years the industry completely changes its best practice.
I'm about to put R-max 1" foil faced panels on the outside of an existing house. (existing subsiding....caulked joints, Tyvek taped, Foil face taped, furring strips)
you're in good company, I struggle to keep it all straight in my head too
It is interesting @@stevenbaczekarchitect9431 . tHank you for the reply.
I think in the long run, I'm going to put my finger in the air...see which way the wind is blowing and take my best guess.
I'll be working on my house so it won't matter....and I'll learn something a season or two after I'm done.
Have a super week!
We are building a tight house and thanks for the detailed explanation of thermal bridge.
I've read Dr. Joe Lstiburek comment on how using ZIP-R sheathing (with the layer of rigid insulation on the inside surface) can create problems with shear strength in the walls due to the fact that there can be 1/2-3 inches of foam between the OSB sheathing and the wall studs (I believe his exact quote was "Good luck getting shear values with that").
How do you compensate for the loss of shear values when you place foam between the exterior sheathing and the framing studs?
It certainly isn't the same as plywood or Zip right up against the stud face......but Huber Engineered Wood has published data that our engineer uses to design the shear resistance. It may be slightly less, but it is still possible. I have used Zip R Sheathing in High Wind Areas successfully with the appropriate engineering.
Perhaps you could do a follow-up video on shear walls and how the engineering is calculated when using ZIP-R sheathing?@@stevenbaczekarchitect9431
Is the poly iso a vapour barrier? Just trying to figure out the vapour barrier should be to the warm in winter side. From Canada here, if we use insulation outside up here it’s the Rockwool comfort board nailed on to sheathing.
Try being in a single wall tent in summer in 100 degrees with sun bearing down and you learn to appreciate thermal barriers.
I have been - Mojave Desert
Pretty decent explanation, there kid
What nail do you specifically use when installing R-6/R-9 Zip R-Sheathing?
Its a .131 3 1/2" nail specified by the engineer
Does that foam have a foil face?.
That R sheathing at 1.5 inches of foam should be R6 not R9 as. stated. He misstated saying it’s R9. You can see the stamp on the sheathing indicating 1.5 inch at R6. Ok R value but excellent thermal decoupler
It says r6x1.5. That makes R9. He is correct.
My man!