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Insulating floor joists? patrick 09-17-2006
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Posted by on September 17, 2006, 10:03 am
insulating around the outside edge would help. if you insulate under
the floor it will probably make the basement colder.

Empressess #124457


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patrick wrote:
> I have a room that is over a crawl space. The room has hardwoord
> floors.
> Last year I had the permiter of the crawl, and the block walls stripped
> of the old
> wet pink insulation, and sprayed with the yellow foam. This definately
> helped with the temperature of the room, and the coldness of the floor.
> Would it be beneficial to also insulate (maybe with the pink stuff)
> the floor joists under the floor? I live in the midwest--10 to 30
> degrees most of the winter.
>
> thanks.


Posted by patrick on September 17, 2006, 4:18 pm
Thanks for all the great replies.
So....what about insulating the floor joists for a room that has a full
basement (exposed) ceiling under it. This room is above the room that
houses the furnace for the house.

Would this be any benefit?



empress2454@wowway.com wrote:
> insulating around the outside edge would help. if you insulate under
> the floor it will probably make the basement colder.
>
> Empressess #124457
>
>
> The best Games
>
>
> <a href=http://www.gamestotal.com/>Multiplayer Online Games</a> <a
> href=http://www.gamestotal.com/>Strategy Games</a><br><a
> href=http://uc.gamestotal.com/>Unification Wars</a> - <a
> href=http://uc.gamestotal.com/>Massive Multiplayer Online
> Games</a><br><a href=http://gc.gamestotal.com/>Galactic Conquest</a> -
> <a href=http://gc.gamestotal.com/>Strategy Games</a><br><a
> href=http://www.stephenyong.com/runescape.htm>Runescape</a><br><a
> href=http://www.stephenyong.com/kingsofchaos.htm>Kings of chaos</a><br>
>
>
>
> patrick wrote:
> > I have a room that is over a crawl space. The room has hardwoord
> > floors.
> > Last year I had the permiter of the crawl, and the block walls stripped
> > of the old
> > wet pink insulation, and sprayed with the yellow foam. This definately
> > helped with the temperature of the room, and the coldness of the floor.
> > Would it be beneficial to also insulate (maybe with the pink stuff)
> > the floor joists under the floor? I live in the midwest--10 to 30
> > degrees most of the winter.
> >
> > thanks.


Posted by Wayne Whitney on September 17, 2006, 10:38 pm

> So....what about insulating the floor joists for a room that has a
> full basement (exposed) ceiling under it. This room is above the
> room that houses the furnace for the house.

Basically you want to have a thermal envelope around your living
space. If the basement is living space, don't insulate the joists
between it and the first floor. If it is not living space, then
insulating between the joists will help.

Cheers, Wayne

Posted by Edwin Pawlowski on September 17, 2006, 11:01 pm

> Thanks for all the great replies.
> So....what about insulating the floor joists for a room that has a full
> basement (exposed) ceiling under it. This room is above the room that
> houses the furnace for the house.
>
> Would this be any benefit?

I don't see that it would. I have seen though, a few houses that did have
that insulated. Since the room above is considered "habitable" and the room
below is not, it seems that an interpretation of the code is that it should
be insulated. I don't know enough about the code to substantiate that. I
only know that a neighbor had to insulate when he was selling his house
(Farmer's Home Somethingorother mortgage required it) and another had it put
in when the house was built a few years ago.



Posted by Edwin Pawlowski on September 17, 2006, 10:56 pm

> insulating around the outside edge would help. if you insulate under
> the floor it will probably make the basement colder.
>
> Empressess #124457

> patrick wrote:
>> I have a room that is over a crawl space. The room has hardwood
>> floors.

Just curious, how does insulating above the crawl space make the basement
colder? :)



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