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Glossary




Reflective Foil Insulation

By Tim Carter
©1993-2008 Tim Carter
Summary: Reflective foil insulation really stops the movement of heat. This foil acts as a radiant barrier both in the summer and winter. The reflective barrier foil works best in the summer when the temperatures are higher.

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Comments

Rn
31 Dec 2007, 01:20
Very good article. Thanks.
Scott Mortimer
07 Feb 2008, 21:40
Very good article--thanks but I do have two questions.
1. I live in a cold weather climate (Iowa) I know I need a perforated product--is it even safe from condensation?
2. Would you recommend blowing in chips like in your video or would the full sheets I see advertised be best.
thank you
AsktheBuilder
08 Feb 2008, 10:09
Scott,
Perforated or crinkled chips.
bob lewis
08 Mar 2008, 09:27
on outside block walls, which way does the foil face vs the paper side. this area in concern is in the master bathroom. the wall has foil paper existing and has the paper facing to the inside. is this correct?
AsktheBuilder
12 Mar 2008, 07:53
Bob,
I am somewhat confused by your description, but I will say Yes.
Andy Perkins
24 Mar 2008, 19:02
In Dallas, there are a number of companies advertising type of radiant barrier that sprays onto the underside of the roof. How does that compare to the foil type you describe.
AsktheBuilder
25 Mar 2008, 07:15
Andy,
I haven't tested that spray product. My understanding is for the barriers to work well, there should be an air space on both sides of the barrier.
mordi ochi
10 Apr 2008, 07:28
Hello Builder,
I live in Lagos, Nigeria and it is usually very hot and i would like to know if this foil could be used residential and office windows and car windscreens.

Revert as soon as possible
AsktheBuilder
13 Apr 2008, 08:27
Mordi,
It can be used anywhere one wants to reflect heat back to its source.
don
16 Apr 2008, 21:39
I wantto purchase this stuff but I can't find it anywher. I live in northern california.
Where can I buyit?
Roger
17 Apr 2008, 06:34
I put Reflective Foil Insulation in the Google search engine and found a lot of companies that sell this product.
Mike Snell
02 May 2008, 08:20
Don, I bought foil at www.atticfoil.com
Trey
11 May 2008, 16:16
I'm from TX and I was wondering if it would be effective to put the foil under the roof and above existing floor insulation? Is floor insulation even necessary? Would it be advisable to put up insulation under the roof and then the foil? As you can see we're very concerned about the heat down here.

Thanks!!!
Tim
15 May 2008, 11:10
I have a pyramid hipped roof (with concrete shingles, if that matters). Since the rafters are all of different length, how will this influence installation and effectiveness of reflective foil. And is this foil ever installed on the outside roof?

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