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Discussion Starter #1
OK, now that you guys have helped me out with the ceiling (drywall instead of a drop ceiling) I'm curious what insulation I should use.

I have what I would call a solid I-shaped joist in my basement ceiling where the distance from the top of the ceiling/bottom of the floor boards to the very bottom of the joist is about 9.5" and the width is around 15".

Any suggestions on type of insulation or mounting technique? Paper backed versus just rolled? Batts versus roll? Stapled versus those little hangers that go from joist to joist?

Thanks!
 

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OK, now that you guys have helped me out with the ceiling (drywall instead of a drop ceiling) I'm curious what insulation I should use.

I have what I would call a solid I-shaped joist in my basement ceiling where the distance from the top of the ceiling/bottom of the floor boards to the very bottom of the joist is about 9.5" and the width is around 15".

Any suggestions on type of insulation or mounting technique? Paper backed versus just rolled? Batts versus roll? Stapled versus those little hangers that go from joist to joist?

Thanks!
You can use standard R19 fiberglass and staple to joist face
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Discussion Starter #3
Is R30 better than R19? This is one place I was getting confused in talking to different people at Home Depot and Menards.
 

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You won't need more than R19 for sound even though R30 is thicker
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Discussion Starter #5
Does the paper backing help or hurt the sound insolation ability? Also, wondering about batts versus rolls.

Thank you to all who have answered this and my other threads.....you've been a big help!
 

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Kraft Paper face does not affect anything.

Batts vs. rolls is a personal preference
 

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I like the rolls, especially from Lowes, they sell it wrapped in plastic, very nice to work with. Plus you can cut it to the exact length you need. I bought a electric knife on Ebay for 5 bucks and can honestly say I don't know how I got along with out it, the insulation cuts like butter even the 703, no mess and no drama, I love it.
 

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Discussion Starter #9
I like the rolls, especially from Lowes, they sell it wrapped in plastic, very nice to work with. Plus you can cut it to the exact length you need. I bought a electric knife on Ebay for 5 bucks and can honestly say I don't know how I got along with out it, the insulation cuts like butter even the 703, no mess and no drama, I love it.
I want to make sure I understand this correctly: The insulation is incased in plastic and not just in the packaging plastic that surrounds the whole bulk roll? If so I imagine this to be the cleanest insulation install ever......Also, what R-value is this insulation?
 

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You can find this wrapping on many different R values. R19 included

It is completely wrapped in plastic, yes.
 

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Discussion Starter #11
Does the wrapping degrade the insulation's ability to block sound at all? Also, how would I attach it to my ceiling joists?
 

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No it does not degrade.

It would be "friction-fit" into the joists. You could use wires to hold up in there. Personally, I'd use the Kraft paper face and staple to joists. But that's just me.
 

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I find the paper + staples is neat and fast and no looking behind be to see if the indulation's falling out.
 

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The plastic wrapped insulation has wings on it for stapling like the Kraft backed stuff does. Once you try the plastic wrapped stuff you will never use the Kraft paper insulation again. If you use the rolls you would simply cut it to 134" and put it up, if you use the batts you would have two pieces per 134" span. Don't forget to use your wifes electric knife:whistling:
 
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