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-   -   Insulating unfinshed basement ceiling for sound (http://www.diychatroom.com/f19/insulating-unfinshed-basement-ceiling-sound-36075/)

daveyd 01-16-2009 02:37 PM

Insulating unfinshed basement ceiling for sound
 
My laundry room is in an unfinished area in my basement. A lot of the sounds from the laundry room (washer/dryer noises, people talking) can be heard in my kitchen that is right about the basement laundry room.

If I add some insulation in between the ceiling joists, I would assume that would help deaden the sound. Since I am not going to finish the laundry room, the insulation I put between the ceiling joists will obviously be exposed.

Is it mandatory that the insulation be covered? If not, would install the insulation paper side up or down?

Garasaki 01-16-2009 03:25 PM

I can't answer your question about covering the insulation, but I can tell you that you don't need, in fact you don't want, paper on the insulation you are installing.

daveyd 01-16-2009 05:33 PM

Quote:

Originally Posted by Garasaki (Post 213790)
I can't answer your question about covering the insulation, but I can tell you that you don't need, in fact you don't want, paper on the insulation you are installing.

So, I should go with unfaced insulation in the ceiling?

daveyd 01-17-2009 07:49 AM

anyone?

bjbatlanta 01-17-2009 09:01 AM

Faced or unfaced, I would think you'd want to cover the insulation to keep the fibers from "raining down" every time someone walks around upstairs........

gma2rjc 01-19-2009 03:36 PM

My nephew bought some sound-proofing insulation at Lowe's so his wife doesn't have to hear him playing drums downstairs. I believe he said he had to special-order it.

Here is a website that has some info about soundproofing:

http://www.soundproofing101.com/

daveyd 01-20-2009 06:21 PM

What about putting the insulation between the rafters paper side down to limit the fiberglass from "falling" This is going to be in an unfinished, un heated laundry room in the basement

bjbatlanta 01-21-2009 08:41 AM

That would certainly help to some degree. Some sort of ceiling would be best, even if you have to just piece it in around pipes or whatever may be in the way....

satz 01-22-2009 12:33 PM

I have insulation with the paper side up held by metal strips you can buy for holding insulation. I went further and added a layer of sheet used to seal insulation as i have my office and did not want fiberglass falling down over time with walking on hardwood floors.

It is not 100% sound proof but except of loud noise i do not hear much.

Maintenance 6 01-22-2009 01:41 PM

Fiberglass insulation is not a particularly good sound proofer. There are sound dampening insulation batts available that will do a better job. If you must use fiberglass, then try to use unfaced. You don't need a vapor retarder and if you end up using kraft faced then at least put the paper toward the warmest side of the area you're installing it into. Keep in mind that if the space in the basement hasn't got a heat source, it will get colder with insulation stopping the radiant heat from the ceiling along with the sound.

bjbatlanta 01-22-2009 04:35 PM

Even stapling up some heavy duty plastic will work as long as it's not near a heat source (exhaust vent for the furnace or such).

daveyd 01-23-2009 02:47 PM

Quote:

Originally Posted by Maintenance 6 (Post 217331)
Fiberglass insulation is not a particularly good sound proofer. There are sound dampening insulation batts available that will do a better job. If you must use fiberglass, then try to use unfaced. You don't need a vapor retarder and if you end up using kraft faced then at least put the paper toward the warmest side of the area you're installing it into. Keep in mind that if the space in the basement hasn't got a heat source, it will get colder with insulation stopping the radiant heat from the ceiling along with the sound.

The room is a laundry room and has the furnace in it. I'm not worried about keeping it warm and I have finished other parts of the basement and they are heated.

I am just looking for some noise control to keep the washer/dryer/furnace noises from travelling upstairs.

I did notice when I put insulation between the ceiling joists in the part of the basement (before I put drywall up) that I did finish, it really deadened the sound.

The laundry room is right below my kitchen so there will be a lot of foot traffic from above. I was thinking about putting kraft faced insulation with the paper side facing down and using the metal insulation supports to hold it up. The laundry room is only used once or twice a week

bjbatlanta 01-23-2009 03:10 PM

Yes it will help deaden the sound. And again, I'd put something up to further insure your clean clothes don't get "insulated". I'm guessing you've got pipes coming through the floor/ceiling is why you don't want to hang drywall?? Just piece it in as best you can and "rough" tape it to seal it. Or as I suggested before, staple up some heavy plastic. Just keep that away from heat sources (exhaust vents). You could even use some rigid foam, way lighter than drywall and will help with sound.........

daveyd 01-25-2009 04:32 PM

Another question...

I am going to build a bedroom in my basement. It will be heated. My plan was to adhear 1" foam insulation to the block foundation then frame the walls.

In addition to putting the foam insulation on the block walls, should I put R19 pink insulation in the framed out walls? If so, should it be faced or unfaced? Or is that too much insulation (foam and fiberglass) and could cause problems?

Wildie 01-25-2009 07:40 PM

You may find this web page of interest! http://www.roxul.com/sw47802.asp I used this in my garage that has a 1/12 pitch roof with 2X8 rafters! I cut lengths of #10 iron wire, 14 3/4" in length and used these wire lengths, pressed up between the joists to prevent the bats from working their way down!


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