Basement Garage Ceiling Insulation/finishing

[Mack81]

I've read through about 150 posts about this already, maybe I'm dumb but i'm still not sure how I go about doing my basement garage ceiling. The ceiling (MBR Floor) has 2x10 joists and currently has paper backed insulation with the paper side up and pushed tight against ceiling using those little wire rods to hold it up. I've been told several different things about this. So my question is:
-Paper side facing down or up?
-Airgap above the insulation or pushed up tight?
-Get rid of it all and have it spray foamed in?
-What can I put over it to shield the sparks from welding/grinding?

 

[dlenkewich]

I've read through about 150 posts about this already, maybe I'm dumb but i'm still not sure how I go about doing my basement garage ceiling. The ceiling (MBR Floor) has 2x10 joists and currently has paper backed insulation with the paper side up and pushed tight against ceiling using those little wire rods to hold it up. I've been told several different things about this. So my question is:
-Paper side facing down or up?
-Airgap above the insulation or pushed up tight?
-Get rid of it all and have it spray foamed in?
-What can I put over it to shield the sparks from welding/grinding?

Your paper side would be your vapour barrier, in this case I'd leave it pointing up. I'm not sure if your wanting to add more? Tear out the existing? I'd leave it the way it is.

If you wish to spend a little coin, tear out the existing insulation and have it spray foamed to get a good air barrier between exhaust fumes and living space.

I'm not a fabricator, but I'd say metal/tin would be your best bet against sparks and slag.

 

[Jess]

You want the insulation tight up against the floor above to eliminate air currents that would degrade the insulation value. Vapour barrier should face the warm room above. Paper facing up. You could stuff the remaining space with batts to improve comfort in the room above. If this is in your basement you would want to sheet the ceiling with 5/8 Firecode drywall. Probably code for this application and safer anyway in case of a fire.

Jess