Hello again! I posted before on this topic, however I need some points answered! I have an unfinished garage ceiling! That is, there is nothing but the joists! I'm going to put 6'' insulation between the joists! My questions are: Do I put wood on top in the center of the joists, so as to be able to staple the bats in the middle for added support? If so, what type and size wood is recommended? Wood strips or 2x4s? What about those wire supports that go between the joists? Do they do a good job of holding up the insulation? And the bats are stapled on the sides along the joists? Thanks for any help! I'm an amateur and learning as I go!