A key advantage to the foil is that it can be installed by the homeowner in an existing attic.
Radiant foil attic.
The best way to use a radiant barrier in a home in arizona is to install some kind of foil type reflective barrier stapled to the trusses in your attic.
Most are about a thick or less.
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How attic foil products work.
We take a look at how radiant barriers work the different types of radiant barriers and some of the.
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If installed on top of attic floor insulation the foil will be susceptible to dust accumulation and may trap moisture in fiber insulation so it is strongly recommended that you not apply radiant barriers directly on top of the attic floor insulation.
Let s take a look at the actual r value of eshield solarguard prodex and bubble foil products.
A radiant barrier can lower heat transfer from attics to the building below keep the attic space cooler and lower cooling costs by up to 17 in warmer climates.
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While this method of installation is one of the only two approved methods of installation there are a few things not being factored in this question.
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Don t install a radiant foil barrier on top of attic insulation since condensation can form under it even on perforated foil resulting in a buildup of moisture which can reduce the effectiveness of insulation and cause moisture damage and rot.
How heat enters the attic.
A majority of unwanted heat in a home during the summer comes from the ceiling above as a result of energy heat transfer from the attic space.
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In the summer months an attic space is heated by thermal radiation from the sun radiant heat.
You need r value on your attic floor and you need a radiant barrier either stapled to the bottom of your rafters or laid out over the attic insulation.