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#1
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Insulating Floors?
We have converted a three season porch into a four season by adding a
gas stove and some new windows. Below is an unfinished basement - the joists and subfloor are exposed. Do I gain any efficiency by installing insulation between the joists? Thanks in advance for any advice. |
#2
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Insulating Floors?
MathWhiz wrote:
We have converted a three season porch into a four season by adding a gas stove and some new windows. Below is an unfinished basement - the joists and subfloor are exposed. Do I gain any efficiency by installing insulation between the joists? Thanks in advance for any advice. I would guess little to none. -- Joseph Meehan Dia duit |
#3
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Insulating Floors?
"MathWhiz" wrote in message oups.com... We have converted a three season porch into a four season by adding a gas stove and some new windows. Below is an unfinished basement - the joists and subfloor are exposed. Do I gain any efficiency by installing insulation between the joists? Sure do. How much depends on the temperature differential. If the basement is only a few degrees cooler, there will be little savings, but if it is 20 degrees, you will retain more heat and save quite a bit. . |
#4
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Insulating Floors?
Sure do. How much depends on the temperature differential. If the basement
is only a few degrees cooler, there will be little savings, but if it is 20 degrees, you will retain more heat and save quite a bit. . I'm in New England. At times, it's 50 degrees cooler. |
#5
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Insulating Floors?
"MathWhiz" wrote in message oups.com... Sure do. How much depends on the temperature differential. If the basement is only a few degrees cooler, there will be little savings, but if it is 20 degrees, you will retain more heat and save quite a bit. . I'm in New England. At times, it's 50 degrees cooler. Then you must insulate for comfort, as well as energy savings. |
#6
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Insulating Floors?
50 degrees cooler meaning 20f? where is you heating system and pipes,
you will save and the basement might be colder, are pipes and ducts insulated. |
#7
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Insulating Floors?
Underneath the three season porch is a seperate basement (attached to
main basement via a door). There are no pipes or ducts down there and it's unheated. When it's 0 outside in Feb, it's probably not more than 20-30 down there. Pipes, furnace, etc, are in the main basement. We have a natural gas stove that heats the room up in about 20 minutes. Gets it too hot. |
#8
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Insulating Floors?
MathWhiz wrote:
Sure do. How much depends on the temperature differential. If the basement is only a few degrees cooler, there will be little savings, but if it is 20 degrees, you will retain more heat and save quite a bit. . I'm in New England. At times, it's 50 degrees cooler. If your basement is 30º F colder, I reject my original answer and suggest a good amount of insulation. -- Joseph Meehan Dia duit |
#9
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Insulating Floors?
The question is how much, the best would be foam sprayed on of R7 per
inch, second best would be an inch or two of R 7.2" foamboard then fiberglass batt, the least effective is just fiberglass batt of R 3.5. Your temp difference is great, foam will also stop air infiltration, which you dont detect but is happening. |
#10
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Insulating Floors?
On 1 Sep 2006 03:09:00 -0700, "MathWhiz"
wrote: We have converted a three season porch into a four season by adding a gas stove and some new windows. Below is an unfinished basement - the joists and subfloor are exposed. Do I gain any efficiency by installing insulation between the joists? Thanks in advance for any advice. I hope so, since my house has an unfinished basement, and the whole first floor has insulation in the floor joists. The basement gets to low 60's in winter, and floor feels warm. So it must be working. later, tom @ www.WorkAtHomePlans.com |
#11
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Insulating Floors?
MathWhiz wrote: We have converted a three season porch into a four season by adding a gas stove and some new windows. Below is an unfinished basement - the joists and subfloor are exposed. Do I gain any efficiency by installing insulation between the joists? Yes ... but if you ever plan to heat that basement below, it would make sense to insulate the basement walls now, rather than insulate the floor, and then the walls later. If not, insulate the floor ... if the floor feels cold as in, even wall to wall carpet with underpad would probably provide all the insulation you need. To continue, I had a similar situation with a hadwood floor ... I insulated the basement walls. |
#12
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Insulating Floors?
Sure, but before you do, staple up a loop of some pex tubing between
the joists, and hook it up to a heat exchanger associated with the gas stove. Warm water circulating under the feet will allow you to stay comfortable through the winter. MathWhiz wrote: We have converted a three season porch into a four season by adding a gas stove and some new windows. Below is an unfinished basement - the joists and subfloor are exposed. Do I gain any efficiency by installing insulation between the joists? Thanks in advance for any advice. |
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