[golfnut]

gf, for garage door insulation you can go to Romac Bldg Supply who has probably put in most the the garage doors in TV and they sell insulation packages for your particular door size that are in pre-cut pieces that you just stick on.

Our lanai faces southwest and we have found (as Barb pointed out), that we like that it keeps it light and bright in the afternoon, we do have double pane tinted windows.