Insulating a Roof Truss System

[Bordeauxman]

I have a scissor truss roof system and the roof itself is fully finished with vapor barriers, vents, roofing, etc. Located in upstate, NY and subject to significant temperature and humidity fluctuations. After the heater (only to be used on demand) is installed, we will be insulating the standalone garage. The lower level of the truss system will be sheathed in sheetrock to make a ceiling.

Question: Does it matter if the insulation is resting in the sheetrock of the ceiling or does it have to be closest to the roof for some reason? The roof is a 12x12 pitch and the ceiling part of the scissor truss is a 12x7 pitch. There is over 2' of space at the peak of the roof.

 

[readhead]

Install along the bottom cord of the truss.

 

[rieferman]

As part of sheetrock process, they'll install furring strips (usually 2x4's at 24" OC or closer) that run from bottom cord to bottom cord across the entire ceiling so that you have a place to fasten the sheetrock. This will also be a good support location for your insulation (as readhead notes).

 

[K'ledgeBldr]

I'd just Baffle and batt the lower 3-4'. Then once the drywall is hung blow the rest.

 

[MagKarl]

Inspector here won't allow blown in insulation on slopes, has to be batts.

 

[K'ledgeBldr]

Inspector here won't allow blown in insulation on slopes, has to be batts.

Sounds like another idiot inspector who wants to push his weight around. Or does he really think gravity is going to pull down the insulation?