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Home > Archive > Home Repair forum > December 2006 > Insulating floor over unfinished basement.
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Insulating floor over unfinished basement.
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| Tom The Great 2006-12-25, 8:25 pm |
| Hello Eveyone,
Looking for suggestions. I have an unfinished basement, with unfaced
fiberglass insulation in between the floor joists. I hate the stuff.
Anytime I add a circuit, soon I will be adding bridging, or just
walking on the flooor, I get fiberglass on me, boxes, and in my air.
I will be removing the fiberglass to shore up a bouncy floor, I want
to NOT put it back, and wondered what are my alternatives. I want
insulation that won't be declared a hazard on a couple decades(yeah
fiber glass is heading there). So after this ramble, can anyone offer
a suggestion?
tom
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| Eigenvector 2006-12-25, 8:25 pm |
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"Tom The Great" <Post@here.com> wrote in message
news:21p0p25tc83rat0be55o95qk47l9omm4km@4ax.com...
> Hello Eveyone,
>
> Looking for suggestions. I have an unfinished basement, with unfaced
> fiberglass insulation in between the floor joists. I hate the stuff.
> Anytime I add a circuit, soon I will be adding bridging, or just
> walking on the flooor, I get fiberglass on me, boxes, and in my air.
>
> I will be removing the fiberglass to shore up a bouncy floor, I want
> to NOT put it back, and wondered what are my alternatives. I want
> insulation that won't be declared a hazard on a couple decades(yeah
> fiber glass is heading there). So after this ramble, can anyone offer
> a suggestion?
>
> tom
What about that denim/cotton insulation? I've heard that it's pretty decent
stuff really, and it doesn't shed microscopic particles of irritating glass.
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| Wayne Whitney 2006-12-26, 3:25 am |
| On 2006-12-25, Tom The Great <Post@here.com> wrote:
> Looking for suggestions. I have an unfinished basement, with unfaced
> fiberglass insulation in between the floor joists. I hate the stuff.
I'm facing the same situation, and I've thought about it some,
although I haven't decided on anything yet. Another poster suggested
cotton batt insulation, which seems like a good idea and is one I'm
considering. The other option I've thought of is to attach a small
continuous angle bracket to the bottom of the sides of each joist and
use this to support rigid insulation.
Cheers, Wayne
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| Joseph Meehan 2006-12-26, 9:25 am |
| Tom The Great wrote:
> Hello Eveyone,
>
> Looking for suggestions. I have an unfinished basement, with unfaced
> fiberglass insulation in between the floor joists. I hate the stuff.
> Anytime I add a circuit, soon I will be adding bridging, or just
> walking on the flooor, I get fiberglass on me, boxes, and in my air.
>
> I will be removing the fiberglass to shore up a bouncy floor, I want
> to NOT put it back, and wondered what are my alternatives. I want
> insulation that won't be declared a hazard on a couple decades(yeah
> fiber glass is heading there). So after this ramble, can anyone offer
> a suggestion?
>
> tom
I suggest removing it, doing all the work you need done, then putting it
back in (why waste good insulation) then cover the whole thing with plastic
or house wrap like Tyvek?
--
Joseph Meehan
Dia 's Muire duit
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| Tom The Great 2006-12-26, 8:25 pm |
| On Mon, 25 Dec 2006 16:31:18 -0800, "Eigenvector"
<m44_master@yahoo.com> wrote:
>
>"Tom The Great" <Post@here.com> wrote in message
>news:21p0p25tc83rat0be55o95qk47l9omm4km@4ax.com...
>
>What about that denim/cotton insulation? I've heard that it's pretty decent
>stuff really, and it doesn't shed microscopic particles of irritating glass.
>
I saw something like that on "this old house", now my memory serves
me, they said it offered sound dampening properties above fiberglass
because of its density. Might be an option, I have a 4 year old that
jumps too much and an office in the basement. I wonder how 'readily'
avalible this stuff is. Thanks for your suggestion.
tom @ www.Consolidated-Loans.info
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| Tom The Great 2006-12-26, 8:25 pm |
| On Tue, 26 Dec 2006 04:46:33 GMT, Wayne Whitney
<whitney@post.harvard.edu> wrote:
>On 2006-12-25, Tom The Great <Post@here.com> wrote:
>
>
>I'm facing the same situation, and I've thought about it some,
>although I haven't decided on anything yet. Another poster suggested
>cotton batt insulation, which seems like a good idea and is one I'm
>considering. The other option I've thought of is to attach a small
>continuous angle bracket to the bottom of the sides of each joist and
>use this to support rigid insulation.
>
>Cheers, Wayne
I have duct work, and wiring in joist area. Rigid seemed like it had
to be 'cut' perfect, or lots of gaps could be an issue. I was
thinking about a rail system close to the edge, and sliding the foam
boards up like drop ceiling tiles. I have to now find a product that
matches my imagination. So I can make comparisons.
thank you,
tom
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| Tom The Great 2006-12-26, 8:25 pm |
| On Tue, 26 Dec 2006 09:20:53 -0500, "Joseph Meehan"
<sligojoe@hotmail.com> wrote:
>Tom The Great wrote:
>
> I suggest removing it, doing all the work you need done, then putting it
>back in (why waste good insulation) then cover the whole thing with plastic
>or house wrap like Tyvek?
Can tyvek be left exposed? Serious question, since vapor barriors on
insulation says they need to be covered with fire barrior. Just
thinking out loud, will look this up. Thank you!!!!!!!
tom
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| Joseph Meehan 2006-12-27, 9:25 am |
| Tom The Great wrote:
> On Tue, 26 Dec 2006 09:20:53 -0500, "Joseph Meehan"
> <sligojoe@hotmail.com> wrote:
...
>
>
> Can tyvek be left exposed? Serious question, since vapor barriors on
> insulation says they need to be covered with fire barrior. Just
> thinking out loud, will look this up. Thank you!!!!!!!
>
> tom
Good question. I had not thought of it as an inhabited space, but ...
??
--
Joseph Meehan
Dia 's Muire duit
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| Wayne Whitney 2006-12-27, 1:25 pm |
| On 2006-12-26, Tom The Great <Post@here.com> wrote:
> Can tyvek be left exposed?
If you are concerned with leaving tyvek exposed, then that would rule
out rigid insulation, as I'm not aware of any that can be left exposed
to an inhabited space.
Cheers, Wayne
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| Tom The Great 2006-12-27, 1:25 pm |
| On Wed, 27 Dec 2006 15:38:30 GMT, Wayne Whitney
<whitney@post.harvard.edu> wrote:
>On 2006-12-26, Tom The Great <Post@here.com> wrote:
>
>
>If you are concerned with leaving tyvek exposed, then that would rule
>out rigid insulation, as I'm not aware of any that can be left exposed
>to an inhabited space.
>
>Cheers, Wayne
Good point, I thought the metal foil stuff was ok.
tom
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| Wayne Whitney 2006-12-27, 1:25 pm |
| On 2006-12-27, Tom The Great <Post@here.com> wrote:
>
> Good point, I thought the metal foil stuff was ok.
Oh, I don't know about that stuff. But I guess if you are treating
the basement space as habitable, why insulate between it and the first
floor? You could include the basement space in the thermal envelope
and insulate its boundary.
Cheers, Wayne
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| Joseph Meehan 2006-12-27, 1:25 pm |
| Tom The Great wrote:
...
>
> Can tyvek be left exposed? Serious question, since vapor barriors on
> insulation says they need to be covered with fire barrior. Just
> thinking out loud, will look this up. Thank you!!!!!!!
>
> tom
I just did a little search and found this from DuPont:
9. Can DuPontT TyvekŪ be used in attics? On roofs? Under Floors? On the
interior?
In 2006 DuPont introduced TyvekŪ AtticWrapT, a unique, breathable membrane
that helps create an airtight seal to reduce air leakage and energy loss
through the roof. All other DuPontT TyvekŪ products in Canada and the US
have been tested and approved as a product to be installed behind exterior
walls.
--
Joseph Meehan
Dia 's Muire duit
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| Tom The Great 2006-12-27, 5:25 pm |
| On Wed, 27 Dec 2006 18:36:09 GMT, Wayne Whitney
<whitney@post.harvard.edu> wrote:
>On 2006-12-27, Tom The Great <Post@here.com> wrote:
>
>
>Oh, I don't know about that stuff. But I guess if you are treating
>the basement space as habitable, why insulate between it and the first
>floor? You could include the basement space in the thermal envelope
>and insulate its boundary.
>
>Cheers, Wayne
It's 'unfinished', meaning not insulated, and not heated(zero vents).
It's typically 10 degrees colder than the house. So the house came
with the floor joist area insulated, and made sense, I have warm
floors.
As for habitable, washer dryer, work area and computer is down there.
I tend to work with a jacket, and have not immediate plans to insulate
or heat the space.
tom
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