Model # RB4812550

Internet #203927012

Store SKU #223310

Reflectix 48 in. x 125 ft. Heavy-Duty Perforated Radiant Barrier


48 in. x 125 ft. Heavy-Duty Perforated Radiant Barrier

  • Great for energy efficiency
  • Works well in attics
  • 48 in. x 125 ft. Heavy-Duty Perforated Radiant Barrier
$65.84 /each

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Product Overview

Lower your energy bills with Reflectix radiant barrier. A perfect solution for attic insulation, it blocks 94% or more of the radiant heat that normally would be transferred to your attic floor. That keeps the attic cooler and means less air conditioning usage, up to 10% less, for lower utility bills. Attic-mounted duct systems also benefit dramatically from our Reflectix radiant barrier. It is easy to handle, and can be used in cathedral ceilings or as a house wrap behind brick or siding.




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Customer Questions & Answers

I currently have fiberglass insullation for my garage door. If this were mounted behind the fiberglass, against the garage door, would it improve it?

Asked by: Tom
you need the radiant barrier to have one side exposed to the air not trapped between the fiberglass and the door.
Answered by: J22
Date published: 2017-01-11

can i use this under a foam insulated metal roof

Asked by: Arch
This is a radiant barrier application. Respectfully, the responder from Mass. is in error. His statement is confusing two applications, radiant barriers and reflective insulations. Radiant barriers are installed in open attics (typically ventilated) and do not require enclosed air spaces. This type of application reduces radiant heat transfer and is not quantified with an R-value. Reflective insulation assemblies are installed in cavities that have enclosed air spaces and provide stated R-value benefits.
Answered by: ReflectixTechnicalGroup
Date published: 2016-09-19

What is the reason for perforating the radiant barrier?

Asked by: Vixkix
to breath
Answered by: J22
Date published: 2017-01-11

Can this radiant barrier use without insulation?

I'm placing this radiant barrier in my shed and I don't want to use insulation. How effective would it be?
Asked by: Janna
Radiant barrier is used with insulation to reduce the heat flow through attics. The radiant barrier reduces the amount of radient energy coming from the roof into the structure, but has very little R-value so use a good thermal insulation with a radiant barrier.
Answered by: Reflectix Product Support
Date published: 2016-10-10
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Customer Reviews

48 in. x 125 ft. Heavy-Duty Perforated Radiant Barrier is rated 4.5 out of 5 by 22.
Rated 5 out of 5 by from This stuff really works I have an attic that I can walk into through a door and has a floor. It is basically another room. I store lots of stuff in it. When we cut our large dead pine tree down, it started getting hot and the fan, which came on at 90 degrees, came on every day even thought it was 75 outside. I installed this radiant barrier on most of the two sunny sides under the rafters. I used two rolls. The attic now stays about 5 degrees higher than the outside. A huge success in my mind. This material is tough. They way to staple it every 6 inches, which I did. But it is strong enough that one staple in each corner would hold it. I installed in about 8 foot sections and would staple one corner and then pull it tight and staple another corner. After all four corners were secure, I would do the interior ones. The point is, you can pull hard and it wont' rip or tear. When I wanted to pull some out of a staple to reposition it, you have to pull really hard to remove it. It almost pulls the staple out with the material. My plan is to have my roof guy get rid of the attic fan and install more vents. The fan is only coming on because it gets so hot at the peak. The attic itself is not getting that much hotter than the outside air and that is really the best that anyone can hope for in a non insulated space. The bad part is that this takes a long time to install. Not because it is difficult, but rather because there is just a lot of area and putting up about 35 pieces at even 10 minutes each is 6 hours. I didn't time it, but I spent several days, several hours per day, doing it. If my goal was to keep my house cool and I didn't have stuff in my attic. I think adding insulation to the attic floor would be much easier. But that was not my goal as the house was fine temperature wise. One more interesting point. At one time when I had half of the south-east wall covered I was standing next to the uncovered roof stapling a section. The hot roof felt hot on my face. I moved a couple of feet so I was protected by the radiant barrier and I no longer felt the heat of the roof. This stuff works. Touch it and it is hot, but it doesn't radiate heat so it keeps things inside the attic from getting hot. In other words, it works.
Date published: 2016-10-11
Rated 5 out of 5 by from Durable as expected and was used to present the best... Durable as expected and was used to present the best reflective light to brighten up my shop. My shop looks great. My biggest problem was running straight lines. Only years will tell how good this product will last.
Date published: 2017-02-08
Rated 4 out of 5 by from Reflectix 48-125 Great product, heavy duty quality, easy to work with in large pieces. Only issue was one roll was manufactured with a large section wrinkled. I was still able to use section as it didn't affect the install.
Date published: 2017-02-14
Rated 5 out of 5 by from Much heavier duty than previous item Similar. Very strong... Much heavier duty than previous item Similar. Very strong hard to tear went up easy.
Date published: 2017-02-17
Rated 4 out of 5 by from a pain to install, but works 1) The material is really tough and stands up to the abuse of installation. 2) We installed it in long sections (4x26'), but I feel like it would be easier to install in 4x4' or 4x8' sections. 3) Has dramatically dropped the temp in our attic on the first day of completed installation. 4) Expect to use more staples and duck tape than you assume. (we used duck tape, not the foil tape. I'm sure that makes the the boogie man, but come on...) 5) I used the opportunity to also add some insulation over/around the ac duct work in the attic and fix a few other things that otherwise go unattended. --Our home is a smaller 2 story house built in the mid 1980s in Texas. We've already noticed the comfort level of the upstairs improving.
Date published: 2013-06-19
Rated 4 out of 5 by from Strong material, but needs better quality control Purchased two rolls, both had quality issues where they were wrinkled. Fortunately after stapling it flattened a bit.
Date published: 2016-08-16
Rated 4 out of 5 by from Reduced Attic Temps I purchased this material to reduce the temperature of the attic storage space above my garage. We are in the Pacific Northwest where this sort of barrier is not commonly used. I stapled it to the underside of the rafters. After covering the underside of just one roof plane, facing southwest, I've noticed a measurable reduction in temperature. Before this product, The high attic temps were about 14 degrees higher than the highs outside , sometimes as much as 19 degrees. After installation under just one side of the attic roof, the attic high temps are averaging only 7 degrees above the outdoor temps. What I find more surprising is that the initial temperatures were measured in May and June, with an average high outside of 78, with a maximum of 101. The temperatures with the material installed were measured in August, with an average of 95. Furthermore, the garage attic space is open on one side to the rest of the house attic, including a large south-facing roof plane. I assumed the heat gain from the rest of the space would equalize with the space above the garage, making the barrier ineffective, but the numbers seem to prove otherwise. This product seems quite effective, and was cost effective at about $65 a roll. Installation was straight forward with a staple gun and utility knife, but is definitely a two person job. The large pieces can be unwieldy, particularly in tight spots under the attic roof.
Date published: 2016-08-16
Rated 5 out of 5 by from worth the money Decent price, works well, not user friendly in big pieces, use some good duct tape instead of the foil tape. I have a 12 degree difference with and without this product.
Date published: 2015-08-26
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