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I was looking for silver foil to cover the heating duct insulation wrap. What is it called?

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Are you talking about the insulation over your heating duct lines? –  Matt Johnson Jun 25 '13 at 8:25
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Covering up that duct work with only foil tape is going to be very expensive. –  Doresoom Jun 25 '13 at 15:02
    
Doresoom: how expensive? I am good till 100. :-) –  hari Jun 25 '13 at 16:00
    
If you want to measure out your area to be covered, it's approximately $25 for 5400 sq inches, which comes out to $0.66/sq. ft. if I did my math right. Don't forget to account for overlap! –  Doresoom Jun 25 '13 at 16:38
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2 Answers

up vote 4 down vote accepted

You're looking for Duct Wrap. It's actually an insulation in it's own right, being one side foil, and the other side fiber insulation. I see no reason why you couldn't apply it over top of the existing insulation, provided everything is dry.

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http://www.homedepot.ca/product/reflectix-duct-wrap-12x25/902353

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HVAC foil tape or Aluminum foil tape. What you DON'T want is a fabric/cloth duct tape.

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thanks @HerrBag. –  hari Jun 25 '13 at 16:01
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