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.

"patrick" wrote in message
oups.com...
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.

Absolutely it would. You can use foam board, you can spray, you can use
fiberglass.

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.

How does foam board attach? I assume that is the blue colored board?
I would think the foam might be the most effective, but I can't install
it myself.

Which is then more effective--the foam board or fiberglass?

I don't understand the comment about making the basement colder, this
is above a closed off crawl space.



Edwin Pawlowski wrote:
"patrick" wrote in message
oups.com...
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.

Absolutely it would. You can use foam board, you can spray, you can use
fiberglass.

Edwin Pawlowski wrote:
"patrick" wrote in message
oups.com...
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.

Absolutely it would. You can use foam board, you can spray, you can use
fiberglass.


In most areas, floor insulation (between the floor joists) is required
by code...I'm amazed that in the midwest this wasn't done. You'll save
a BUNCH!

House was built in '23......so no surprise to me.



Curmudgeon wrote:
Edwin Pawlowski wrote:
"patrick" wrote in message
oups.com...
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.

Absolutely it would. You can use foam board, you can spray, you can use
fiberglass.


In most areas, floor insulation (between the floor joists) is required
by code...I'm amazed that in the midwest this wasn't done. You'll save
a BUNCH!

patrick wrote:
How does foam board attach? I assume that is the blue colored board?
I would think the foam might be the most effective, but I can't install
it myself.

The foam board can be attached almost any way you can think of - nails,
screws, adhesives. You can cut the board to make a wedge fit between
the joists and use a can of expanding foam to seal the gaps.

Which is then more effective--the foam board or fiberglass?

Rigid insulation has roughly twice the R-value of fiberglass batt
insulation.

I don't understand the comment about making the basement colder, this
is above a closed off crawl space.

The heat coming from the room above the crawlspace won't supply enough
heat to heat the basement to any measurable degree. It's not a factor.

R

Does the fact that he has HW floors make a difference in foam insulation,
i.e. is it a fire code violation since there is no fire-resistant covering
over the foam? Or does that apply just to walls?

Buck Turgidson wrote:
Does the fact that he has HW floors make a difference in foam insulation,
i.e. is it a fire code violation since there is no fire-resistant covering
over the foam? Or does that apply just to walls?

The fire resistive barrier must be on the occupied side of the foam so
it is acceptable to have rigid foam insulation in the crawl space.

R

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?



wrote:
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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href=http://www.stephenyong.com/kingsofchaos.htmKings of chaos/abr



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.

On 2006-09-17, Buck Turgidson wrote:

Does the fact that he has HW floors make a difference in foam
insulation, i.e. is it a fire code violation since there is no
fire-resistant covering over the foam? Or does that apply just to
walls?

My understanding is that the building code specifies that a thermal
barrier is required between the foam and the living space, and that
1/2" of gypsum board is a thermal barrier, but that it doesn't
enumerate all possible thermal barriers. So some jurisdictions accept
alternate thermal barriers, e.g. 5/8" of wood, in which case the
subfloor and HW floor would presumably be sufficient.

Cheers, Wayne

On 2006-09-17, patrick wrote:

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

wrote in message
ups.com...
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?

"patrick" wrote in message

I don't understand the comment about making the basement colder, this
is above a closed off crawl space.

The person answering that did not read the message fully. It won't have an
effect at all.

"patrick" wrote in message
oups.com...
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.