If there is no air circulation between the insulation and the roof, it could get condensation, which ultimately could cause rotting.
insulation
The costume designers that had made their gear for years, just bought shoulderpads and fabricated plastic/fiberglass spikes and bolt them through the underside of the pad, much like I did with mine. http://www.myspace.com/djcashsclay
Underside is a noun.
Your hood will get hot after driving because of the heat from the engine. To keep the hood cooler you can insulate the underside with fiberglass batting. You can get such at your local parts store. They make aluminized batting that, by reflecting the heat, will be even more effective.
underside
spores are produced on the underside of mushrooms.
the underside of the gametophyte
What is the hod of the small opening on the underside of leaves
Your rafters are probably 2 x 6's, you need a minimum of 8" so you have air flow above your 6" insulation. Rip a 2 x 4 in half and nail it to the underside of the 2 x 6's. Make sure to nail the factory sides, (the 1.5" side) not the saw cut side, so your Firring strips are all the same thickness.
She flipped over the table to see the underside covered in dust and cobwebs.
The white plates/Patches are tubes that are located on the underside, of the woodlouse.
The African Luhya word for the English word 'underside' is "asi".