Attic Insulation

[Erol Kartal]

I've been reading about the advantages of insulating both the unfinished attic floor and rafters in areas of hot sunny weather. Not that Chicago compares to Fresno but I have never once seen insulation between rafters. Is it trapped humid air between the insulation and sheathing that makes it a bad idea for the midwest?

Thanks

[Jeffrey R. Wicklander]

Erol...
I've seen it in Waukegan before where they've converted an attic space into a living area. There should still be an air gap between the sheathing and the insulation, I believe 1" is recommended. If there are soffit vents as well as ridge vents, you should be good to go.
Reflective Insulation

Jeff

[Darren Spencer]

They are actually changing the way it is installed and it is the air gap that creates the problems. If a insulation is installed where the material can not reach the dew point the chance for condensation is zero.

[jhugenroth]

Originally Posted by ekartal

Not that Chicago compares to Fresno..

Yeah, at least 100 degrees here is bearable! (It's a dry heat)

I've never seen insulation in both places yet.

[ldapkus]

I've seen one new construction home that was spray foamed.

[David P. Valley]

I see 80% of the homes I inspect, improperly insulated. I simply give them a link to my website...

http://www.masscertifiedhomeinspections.com/?D=47