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Old 11-06-2006, 06:42 PM   #1
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How far should insulation be from heating ducts...


I am insulating a basement and am stuffing insulation in between the sill plate and floors in between joists. In a couple of spots the heating ducts go up in between the walls. How far should I keep the insulation away from these ducts or do I have to even worry about that at all (I mean the ducts can't get so hot it would light the insulation i would think-just want to make sure). I also have the same question with regards to the PVC exhaust pipe for the high efficency furnace-how far do I have to keep away from that as well?

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Nick

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Old 11-06-2006, 07:41 PM   #2
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How far should insulation be from heating ducts...


Your fine. Don't worry about them touching. Like you mentioned they won't get hot enough to ignite. Even the pvc pipe is ok to come in contact with it.

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Old 11-06-2006, 07:49 PM   #3
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How far should insulation be from heating ducts...


As usual, Big Dave is right.....

(FYI- He usually answers things 'word for word'.... what I am thinking.....as I am reading the original poster's question.... )

My reply:

I am just "seconding" his advice... so you are 'sure' about applying the advice that he wrote you back ...
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Old 11-06-2006, 07:52 PM   #4
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How far should insulation be from heating ducts...


You gotta be quicker on the keys Atlantic.
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Old 11-09-2006, 05:47 PM   #5
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How far should insulation be from heating ducts...


good to know! thanks for the replies. I am so glad I took time to insulate the basement...i found at least 8 holes that were cut in the header above the sill plate that went straight outside to a vented crawl space of an addition. One hole was 4 inches wide (I assume it was the dryer vent before the addition was put on) and just let cold air pour in. Sometimes i wonder how clueless the owners before me were....they put in a 93% efficency furnace but dont worry about the giant holes letting cold air in!
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