8" Heat Duct Passing Through Floor - Insulation - DIY Chatroom Home Improvement Forum

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Old 09-22-2012, 01:27 PM   #1
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8" heat duct passing through floor

We have an old house and when we replaced the hot air furnace with a new one, we had the contractor install a duct up thru the first floor to the second floor to get some heat to the second floor.
We have the duct framed out, ready to hang drywall. Before that is completed, we wanted to put some type of insulation around the duct where it passes through the floor. The floor is 1" thick oak with approx. 1" layer of concrete on top which was done to make a smooth surface to apply floor tile.


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Old 09-22-2012, 01:46 PM   #2
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Temps in the duct work shouldn't be that high where it would create an issue.

Seal the seams in the duct work so it isn't being lost between the floors.


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