Q. "Considering the fact that I'm installing from previously mentioned would a little something like stabilized cellulose perform as it has a bit drinking water extra? I'd personally envision free fill could blow everywhere in the community!"
On an unrelated subject: The Chilly Climate Housing Exploration Middle has created a video clip (under) showing a single way of creating an insulated cathedral ceiling. The tactic proven while in the movie is particularly suitable for builders in climates issue to ice dams.
I might enormously take pleasure in tips from experts: bite the bullet and chance of spray foam insulation, or send out the builders back up around the roof in December to cut ridge and soffit vents?
I don't understand what you imply by "unveiled." In zone three, you require at the least R-thirty of insulation (meaning 6 inches of XPS). After you have set up R-30 of spray foam or XPS, you might be performed. You can go away an air Room between The underside of your foam as well as drywall If you would like.
Put in shut-mobile spray foam in opposition to the underside of your roof sheathing, and no other style of insulation. Be sure that the thickness on the spray foam is enough to satisfy least code requirements. Take into account that open-mobile spray foam is dangerous in all weather zones, and if open-mobile spray foam is set up In this particular place in a cold climate, the underside of the cured foam has to be lined with gypsum drywall which has been painted with vapor-retarder paint. Vapor-retarder paint is ineffective if it is sprayed specifically over the cured foam.
A. It is smart to you since it satisfies your preferences. As you happen to be aware, it isn't really an excellent approach to insulate your roof assembly. But you may have described it as A brief halt-gap measure.
Guaranteed It really is lots of problems. It looks like fewer trouble that the depth posted as illustration from the site previously mentioned and takes advantage of no foam... Which can be a "biggie" for me.
I don't have loads of room over or below the roof construction for insulation / venting. Would a flash / batt unvented assembly do the job beneath the single sheathing deck? My insulator has completed Several of those regionally.
Thanks for finding the thread previously mentioned...Notice that in write-up #17, Robert Riversong talks with regard to the "vented more than roof". I agree along with you that this method justifies some interest for cathedral ceilings.
Your system to setup a stack of rigid foam rectangles in Each individual rafter bay is known as the "Slice-and-cobble" means of insulation. It is a method normally preferred by homeowners, but in no way decided on by insulation contractors.
With the roof assembly official site above the cathedral ceiling, does the stack-up underneath capture all the elements I would want? 2x8 pine T&G (presently set up, continues to be because the complete ceiling)
Martin, re: modifying the attic in excess of the second Tale bedrooms into a conditioned attic and sealing the soffit vents.... Before this newest strategy about insulating with rigid foam along with the cathedral ceiling, we were planning to Reduce a ridge vent into your gable ridge, in order to satisfy air flow code needs. At the moment We've eave vents moreover two rather ineffective gable vents, one particular on each side.
Have home about garage center with closets on either side amongst the closet kneewalls along with the eaves. Insulation above the space segment is six inches of foam slabs sealed by "Terrific Stuff" spray-in foam. Previously mentioned this ceiling foam and under the roof plywood, there are one inch x twenty. inch unobstructed foam encased ducts among the rafters for venting for the roof peak vent. The aspect sections outdoors the knee walls are insulated with rolled fiberglass fiber with durovent ducts among the insulation as well as the roof plywood. You will discover sizeable soffit vents at The bottom of the durovent ducts.
A. I concur. In mild in the odor problem, I don't believe that my recommendation to use Ice & Drinking water Defend was a great one -- so I withdraw like it it.