I have just had fiberglass batts installed in my cellar ceiling (paper side up).  Cellar is not otherwise insulated, but I did have vents put into ducts to provide some heat down there as and when necessary.  Question I have is whether there is some fabric/material which could be used (stapled to joists) to on the cellar ceiling side (down) that would improve look of cellar yet not impair insulation/encourage mold, etc.  My batts have random pieces, tufts hanging down even though secured with those wire push-in braces.  Has anyone done something like this before?  I’d appreciate any thoughts. 

Thanks,

Adam