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07-01-2011, 04:39 PM
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#1
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Newbie
Join Date: Jul 2011
Posts: 11
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Holding Insulation on ceiling without drywall?
I'm building a basement workshop and want to keep the table saw and other machine noise from the main house level as best I can. The ceiling is low and there are pipes/electrical I may want to access, so I don't plan to drywall the ceiling.
- What is the proper method to install ceiling insulation between joists without drywalling? I read that the paper side should be up, so I guess I can't staple it. Is there some kind of plastic or something I should use to prevent pink dust from raining down?
- What insulation do I need? What R rating? Pink or some specialty product?
Thanks
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07-01-2011, 04:45 PM
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#2
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Member
Join Date: Jul 2008
Location: Montreal, Quebec, Canada
Posts: 1,751
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Holding Insulation on ceiling without drywall?
Depends a real lot on where you are on this planet... 
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07-01-2011, 04:57 PM
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#3
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Newbie
Join Date: Jul 2011
Posts: 11
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Holding Insulation on ceiling without drywall?
ORLY? Atlanta, GA.
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07-01-2011, 06:17 PM
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#4
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Member
Join Date: Jul 2008
Location: Montreal, Quebec, Canada
Posts: 1,751
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Holding Insulation on ceiling without drywall?
OK what's "ORLY" apart from an old airport in France...?
Does the basement ceiling need to be insulated from the cold/heat? the walls perhaps but floor-to-floor usually doesn't really need insulating. And it doesn't really care therefore where the paper is on the fibreglass batt...
So unless the basement is cold or hot compared to the rest of the house, think about sound insulation. How about 3" of rock wool insulation - although I don't know if it's available where you are; should be...
Now walls are another story...but ceilings...?
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07-01-2011, 08:21 PM
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#5
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Newbie
Join Date: Jul 2011
Posts: 11
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Holding Insulation on ceiling without drywall?
Sorry, ORLY = Oh, really?
I'm not concerned with cold/heat insulation; just sound. Rock wool sounds perfect. After 2 minutes of searching, it looks like it will be tricky to find.
As far as installation, does it have the cardboard back? It sounds like you're saying I can just staple it between joists and I'm good to go. Is plastic covering it a bad idea?
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07-02-2011, 07:52 AM
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#6
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Member
Join Date: Jul 2008
Location: Montreal, Quebec, Canada
Posts: 1,751
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Holding Insulation on ceiling without drywall?
OK thanks for the ORLY clarification...first time I have ever seen that! Insulation is very region-specific in detail and what we do up here is vastly different from what you may do where you are. As you can judge from the number of questions asked, it really helps us knowing where you are from - and even then, your local building code may have something to say on what you eventually decide on doing about heat/cold insulation, hence the question "where are you calling from"?
Up here we have 'Roxul' brand rock wool insulation but there might not much of a call for it where you are. It is fire-rated - that's one advantage...
On the other hand there are good threads here about sound insulation, about increasing mass of the walls. Z strips etc, some about three months old. Rock wool is friction-fit into place...
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07-02-2011, 08:50 AM
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#7
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Member
Join Date: May 2011
Location: OK
Posts: 218
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Holding Insulation on ceiling without drywall?
I would use a kraft faced product that you can staple up. It will be cleaner, saw dust wont cling to it.
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07-02-2011, 01:20 PM
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#8
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Stuck in the 70's
Join Date: Sep 2008
Location: south central Missouri
Posts: 1,801
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Holding Insulation on ceiling without drywall?
Our master bedroom is directly above our kitchen. There is no sleeping late once the first person is up and banging around down there, so when I saw this product on a HGTV show I bookmarked it.
http://www.acoustiblok.com/
I have no connection to the product, no idea if it works or not, or even the price.
If anyone here has used it, I'd like to hear their review.
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07-02-2011, 09:01 PM
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#9
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Moderator
Join Date: Mar 2009
Posts: 8,775
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Holding Insulation on ceiling without drywall?
Asphalt and paper faced batts require covering due to fire hazard, along with poly sheeting and foam board.
Gary
__________________
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!
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The Following User Says Thank You to Gary in WA For This Useful Post:
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08-26-2011, 07:07 AM
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#10
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Member
Join Date: Sep 2009
Location: Dayton, Ohio
Posts: 342
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Holding Insulation on ceiling without drywall?
I have always seen situations like this held up with a stiff wire that is wedged between the joists to support the insulation. They sell it precut around here.
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08-28-2011, 09:36 PM
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#11
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Member
Join Date: Oct 2008
Location: Ontario
Posts: 435
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Holding Insulation on ceiling without drywall?
I have rockwool insulation over my basement workshop. It was there when I bought the house. Its just pressed up between the joists. No paper facing, no staples, just rockwool batts. Hasn't fallen down yet. Roxul sells a Rockwool insulation for noise reduction, but I can't imagine its much different than their thermal insulation. Do a google search and you will find it.
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