[Editor's note: Monthly bill Rose just despatched me the next feedback within an e-mail; he involved his authorization to write-up the opinions.]
Code doesn't seem to use since it's grandfathered in. It looks like I really need to redo the corridor ceiling.
And so the concern is: seal the stucco vents and add the spray foam roof and don't worry about condensation? You can find little or no very low-hanging fruit within our variety of building, Specially on current residences, which is why individuals are currently being sucked into the spray foam roof rip-off.
  Cathy experienced numerous good friends, was passionate and gifted with a chance to relate to individuals of all walks of daily life.  She cherished cats, obtaining adopted various throughout her lifestyle, and it broke her coronary heart when she had to locate households for her final 3 cats (Prissy, Boots, and Cuddlebug) prior to returning to her dwelling space in early 2017 to reside in assisted residing.
  Jerry was a terrific spouse and father, and had a good job in the insurance policies enterprise. But he was not described by any of those roles. Somewhat, he was molded by his section in a generation that realized almost nothing but industriousness; that would rather die than make it possible for another person to repair their auto, or maintenance a dilemma with their house; Which understood the way to squeeze a greenback until it squealed.
2. Install sturdy internet site-created ventilation baffles in Just about every rafter bay before you decide to spray the foam. This way you end up getting a vented cathedral ceiling.
Superb article and dialogue. I've a question about an current unvented attic assembly. The rafters are 2x4's and the bays amongst them are absolutely full of closed mobile spray foam. I wish to include two 1in layers of polyiso to the interior of attic after which cover that has a vapor open up membrane to airseal the assembly.
I think that Monthly bill Rose is true: most of these failures involve dampness that is certainly carried by shifting air. They are not diffusion failures. If your rafter bays really are appropriately dense-packed -- an enormous if -- the chance of air movement is incredibly minimal.
for an unvented development with no insulation above the our website sheathing, how about utilizing wood fibreboard among the rafters right underneath and in contact with the sheathing? All gaps between the boards as well as rafters filled with growing foam / sealant. You could possibly then go over the rafters with rigid foam to provide your insulation nearly expected R level and reduce the threat to the rafters and sheathing, and then put in your airtight drywall beneath this.
Naturally, you may even now have thermal go now bridging with the rafters. But you won't have any moisture troubles.
Many thanks for locating the thread higher than...note that in submit #seventeen, Robert Riversong talks concerning the "vented in excess of roof". I concur with you that this method deserves some focus for cathedral article ceilings.
Whether or not it had been assisting a brother re-roof a residence after a hail storm, or getting a sister-in-legislation who didn’t push on the physician, he was constantly wanting to assistance. He and two of his brothers built 3 spouse and children homes among them.
  Over and past Individuals features, Jerry was a normal born dilemma solver – he could basically deal with, Make or craft just about anything. Common of his industriousness, just after he’d been retired for 3 several years he made a decision to change the old window air conditioner at the home on East Region Lane that has a central air procedure.
I'm a homeowner in Seattle. Have a freshly-framed, vented cathedral ceiling to insulate. Straight bays, 2x12, 24" o/c. The current plan is to make use of batts of some sort in the bays, choose treatment to air seal the inside surface, avoid penetrations, air seal the vent channel too (bays thoroughly sealed), double key the inside area for vapor resistance. I've a few questions on baffling the vent channel: one. A few of the constructing experts I'm working with truly feel the jury remains to be out on baffles and so are recommending leaving the batts open up to your channel other than near the vents, assuming the 1-2" air channel could be preserved.