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Old 02-08-2007, 11:22 PM   #1
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Necessary to insulate basement ceiling between joists?


Is it necessary to insulate between the joists in my basement?

What would be the advantage or disadvantage?

The heating vents in the basement are in the ceiling.
The first floor has hardwood everywhere. It is not cold.

Would insulating make the basement warmer?
Also, how would this interefere with the pot lighting that I plan on installing?
I know there are pot lighting that are made for insulated ceilings.



Thanks for any advice.

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Old 02-11-2007, 03:35 PM   #2
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Necessary to insulate basement ceiling between joists?


Noise a problem in your house? In a duplex I am working on for my parents, I had to gut the basement out, not insulated at all down there, you can hear everything the people are saying in the other side of the duplex upstairs like you were in a room right next to them with a door open. So it's getting insulation on the ceiling.

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Old 02-11-2007, 03:45 PM   #3
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Necessary to insulate basement ceiling between joists?


Insulating the floor will not save you any money on energy. It only makes sense if you have a sound problem.

There are many better solutions to sound problems than the worthless pink fluff.
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Old 02-11-2007, 04:59 PM   #4
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Necessary to insulate basement ceiling between joists?


Quote:
Originally Posted by yummy mummy View Post
Is it necessary to insulate between the joists in my basement?
No, it is not.
However, you should insulate the areas of the joist bays that are on the outside of the area. (In the inside area of your rim joists, above your mud sills located on your foundation walls)
These are the outside/exterior wall areas of the basement ceiling joists.

Quote:
Originally Posted by yummy mummy View Post
What would be the advantage or disadvantage?
The advantage of doing the the area mentioned above is for heat.

As far as insulating between your joists on the inner areas, this is only done for sound deadening. Example: Hardwood floor above on the 1st floor, lots of kids running around the house, home theater in basement....
Insulating that area is optional for your needs...

Quote:
Originally Posted by yummy mummy View Post
Would insulating make the basement warmer?
Insulating the areas above your basement rooms would not make those basement rooms warmer.

Quote:
Originally Posted by yummy mummy View Post
Also, how would this interefere with the pot lighting that I plan on installing? I know there are pot lighting that are made for insulated ceilings.
Insulating the floor joists would effect the 'can' (recessed) lighting by the fact that you would have to spend more money purchasing 'insulated' (IC-rated) recessed lighting.

These can lighting units have an outer layer of metal (box) that keeps the hot lighting elements and raised lighting temparatures away from combustable materials in the ceiling. They are required by CODE when there is insulation in the ceilings that the cans will be installed in. As mentioned they do cost more... (example: $5.00+ vs. $24.00+ - U.S. )

Last edited by AtlanticWBConst.; 02-11-2007 at 05:02 PM.
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Old 02-11-2007, 08:31 PM   #5
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Necessary to insulate basement ceiling between joists?


Thanks for all the great information.

I will not be insulating the ceiling joists as sound is not an issue.
I would have considered it if it would have made the basement a little warmer but as it is I will not be insulating.

Atlantic:

I have insulated the joist bays.
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Old 02-15-2007, 04:45 PM   #6
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Necessary to insulate basement ceiling between joists?


Do I have to put a vapor barrier in the joist bays?

I have insulated them.


Thanks
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Old 02-15-2007, 06:12 PM   #7
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Necessary to insulate basement ceiling between joists?


Quote:
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Do I have to put a vapor barrier in the joist bays?

I have insulated them.


Thanks

If they don't have the paper faced vapor barrier...then sadly (more work).....yes....
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Old 02-15-2007, 09:44 PM   #8
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Necessary to insulate basement ceiling between joists?


.................more work, yes.................


Should I also put that red colour tape (I think it's some sort of duct tape?) where the seams overlap when using the vapor barrier?


Boy, do I have a lot of questions............

Thanks........
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Old 02-16-2007, 03:08 AM   #9
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Necessary to insulate basement ceiling between joists?


Quote:
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.................more work, yes.................


Should I also put that red colour tape (I think it's some sort of duct tape?) where the seams overlap when using the vapor barrier?


Boy, do I have a lot of questions............

Thanks........
Might as well...
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Old 02-06-2009, 01:27 PM   #10
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Necessary to insulate basement ceiling between joists?


how did the insulation work out?
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Old 02-06-2009, 04:23 PM   #11
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Necessary to insulate basement ceiling between joists?


I did not insulate the ceiling, only the joist bays.

I did insulate all of the exterior walls and vapour barrier.

I have come a long way since then. I am starting to paint. Then all I have to do is lay some ceramic tiles. Should be done by Christmas.......
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Old 02-06-2009, 06:51 PM   #12
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Necessary to insulate basement ceiling between joists?


you should post some pictures
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Old 02-06-2009, 11:19 PM   #13
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Necessary to insulate basement ceiling between joists?


Quote:
Originally Posted by strublesiding@optonline.n View Post
you should post some pictures

I will post some pics when I have completed it.
I have posted pictures as I have progressed. If you search, you will see my last ones of my taping.

I have not posted any since. But hopefully, soon I will be able to show the finished project.

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