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What makes ARMA FOIL™ the best radiant barrier material available?

ARMA FOIL Radiant Barrier

      We often get questions about how our radiant barrier is different from other brands or why someone should choose our material over another.  In the paragraphs below, we will lay out the reasons why we believe ARMA FOIL™ is superior to the other products out there.  Obviously we are biased, however we wish to present you with as much information as possible so that you, as the consumer, can make an informed decission as to which product to use.

      It is true that at first glance most of the products look the same, and it is often difficult to tell the difference between some of the various brands on the market.  If reduced to its most basic form, radiant barrier is simply a sheet of aluminum.  This would work by itself, however a thin sheet of aluminum is fragile, tears easily, and would stand no chance of holding a staple.  To add strength, the aluminum must be combined with some other kind of material.  The common materials used are polyethylene, polypropylene, Mylar, and to a lesser extent Kraft paper.

Reflective Insulation Products:

There are many products which consist of a thin layer of fiberglass, foam, or bubble sandwiched between layers of foil.  This typically doubles the cost of the product and only adds a tiny bit of R-Value.  Virtually all the performance comes from the reflective surface, not the 1/8" thick layer of foam or air in the center.

      Only after you start to dig into the details of how the material is constructed, do you discover that there are actually huge differences between our material and those of our competition.

ARMA FOIL™ is Non-Laminated

      The single biggest difference between ARMA FOIL™ and the other products on the market is that the others are laminated.  In a lamination process, the foil is either simply glued on or heat laminated to the plastic lining.  Both of these processes will eventually fail.  With some products you can peel the foil off the plastic right out of the box, with others you have to leave it in the attic for several years before you can easily peel it off.  In our process, the aluminum is vapor deposited directly onto the plastic lining in a vacuum chamber.  The bonds between aluminum and plastic happen at the molecular level which creates the strongest bond possible.  The only way to separate the two, is to sand the aluminum off.

ARMA FOIL™ is Protected from Oxidation

      Another difference between various products is how the aluminum is protected.  If a material is claiming 97% reflectivity or an emissivity value of 0.03 then it has no protection.  Without this protection, aluminum will oxidize loosing its ability to reflect heat.  As the surface of the foil begins to oxidize, it turns cloudy.  If it continues and oxidizes all the way through, it will actually turn clear.  The picture to the right is an example of a material that has completely oxidized.  We take measures to ensure the quality of our material.  In fact, multiple samples from every production run of ARMA FOIL™ are tested in a humidity chamber to ensure that the oxidation coatings are complete and properly protecting the foil.


A material that has completely oxidized.

ARMA FOIL™ is Lighter yet Stronger

      Most vendors tout the thickness and weight of their product claiming that it is heavier and stronger than others.  Every few years, they add a few mils of thickness to the plastic to claim thicker and heavier materials.  For a long time, it was generally true that thicker materials were stronger.  However, advances in technology have led to lighter weight yet stronger materials.  This is true in all sorts of products from bicycle frames to tennis racquets.  Heavier no longer equals stronger, nor is it desirable in most products.  ARMA FOIL™ is made at nearly half the thickness and only 2/3 of the weight of the heaviest product available, yet it is more resistant to tearing.  Our lighter weight rolls are much easier to handle in attics and crawl spaces.

ARMA FOIL™ Passes the Newest Fire Codes

      ARMA FOIL™ passes ALL of the current codes including the ASTM E84 fire test under the new mounting method (ASTM 2599).  Several of our leading competitors can't make this claim.

ARMA FOIL™ is Easier to Install

      We've increased the widths of our rolls from 16" to 17", from 24" to 25.5" and from 48" to 51" to give you just a little extra material where you need it.  These widths are better suited to span the 16 and 24 inch on center spacing as predominantly used in building construction.

      Another downside to some of our competitors' heat laminated products is that the laminating process creates a memory effect in the material.  When you unroll one of those materials, its natural tendency is to roll back up on itself.  Crawling around in an attic or crawl space is hard enough in and of itself.  Don't make the mistake of using a material that you will fight with the entire time.

Conclusion

      In summary, there are many material differences that make ARMA FOIL™ vastly different than the other radiant barrier products on the market.  Doing a bit of research into the material before you buy will often make the difference in the success of your project.  If you have any questions about our material, please give us a call.

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