Model # RB48125

Internet #100288016

Reflectix 4 ft. x 125 ft. Radiant Barrier-DISCONTINUED

Discontinued Reflectix

4 ft. x 125 ft. Radiant Barrier-DISCONTINUED

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Product Overview

With the ever-increasing cost of energy, it is important to create the most efficient attic insulation/radiant barrier system possible. The reflectix radiant barrier is a key component in achieving just that goal. When installed in an attic system, the product blocks 96 percent of the radiant heat that normally would be transferred to your attic floor. By blocking such a significant amount of heat, your attic floor insulation stays cooler and operates more efficiently. This translates to less air conditioning usage (up to 10 percent) which results in lower utility bills. Attic mounted duct systems also benefit dramatically from the reflectix radiant barrier. Ease of handling is one of the key advantages (no itch and all you need are scissors and a staple gun). Additional applications include cathedral ceilings, walls or as a house wrap (behind brick or siding). The product has a class A / class 1 building material fire rating.

  • Easy to handle and install
  • A radiant barrier energy saving product
  • Blocks 96 percent of radiant energy from entering your home
  • Dramatically reduces attic surface temperatures resulting in a cooler home
  • To install, only a staple gun, scissors, safety goggles and a tape measure are needed
  • Class A / class 1 fire rating
  • No mess - no itchy fibers
  • How much do you need? Let our calculator help:
    Insulation calculator button

Info & Guides

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Assembled Depth (in.)
1500 in
Assembled Height (in.)
.006 in
Assembled Width (in.)
48 in
Product Depth (in.)
1500 in
Product Height (in.)
.006 in
Product Length (ft.)
125 ft
Product Thickness (in.)
.006 in
Product Width (in.)
48 in


Friction Fit
Insulation Type
Radiant Barrier
Product Weight (lb.)
Sheet or Roll

Warranty / Certifications

Warranty Information
Reflectix warrants its products to be free from material and workmanship defects.

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Customer Questions & Answers

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Customer Reviews

4 ft. x 125 ft. Radiant Barrier-DISCONTINUED is rated 4.2 out of 5 by 12.
Rated 5 out of 5 by from Easy and better than expected Know what you're buying when you buy Reflectix. It's a radiant barrier which blocks radiant heat (the heat from the sun hitting your roof and making the air in your attic hot). That hot attic air is turned into conductive heat as it passes downward, and is *conducted* through your ceiling into your house and is why you have the blown fiberglass or other insulation on the floor of the attic above your ceiling to prevent it from coming through. As a radiant barrier, the job of Reflectix is blocking the first step, the passing of radiant heat from the roof into the attic air. Reflectix does this well. It can be very thin because the silver foil is what is doing the work. Bubbles, fiberglass insulation between the foil, etc is all extra. Installation was way easier than expected. I did the project solo, cut it into ~12 foot lengths and stapled to the rafters quite easily. I had absolutely no problems handling it; it was lightweight but stapled easily. I was not very gentle with it as I manipulated the excess length around the rafters as I stapled, but it did not tear at all through the entire project. For my project, it was as good a product and as good a value as I could have hoped for. I would definitely purchase again, and may do so to protect my garage or other attic areas.
Date published: 2012-04-12
Rated 3 out of 5 by from Reflectix Radiant Barrier is too flimsy, tears easily, and only has scrim fibers every inch or so. I ordered this product after looking at several other products, being assured it was substantial and wouldn't easily tear. For example, I compared it to AtticFoil and two other products for which I received free samples. On arrival of my order, I was sorely disappointed in the light weight material, not much more than VERY thin aluminum foil; I could easily tear the product in between the scrim fibers. Unless you just happened to get a staple across the polyester scrim fibers, it would not have held up, and even if you did, I think it would have torn badly because the fibers only ran every inch or so in a diagonal cross pattern. While Reflectix would probably have performed equally well in the radiant barrier role, I believe it would have been much harder to deal with as a self install. While it might have held up in a simple/easy install, with the significant tight spaces I was working, I didn't trust it to hold up to the inevitable rougher treatment I would have put it through.
Date published: 2011-12-13
Rated 4 out of 5 by from Good Buy Great product. The material seems to have small pieces of string woven in for stability. The product is very stable yet manipulatable. However it does make it a little bit harder to cut sometimes with my knife. A very difficult install for one person in a hot attic, but that's not the fault of the product, just me the lazy installer. I installed it in bursts of motivation over about 2 months.
Date published: 2012-07-24
Rated 3 out of 5 by from You get what you pay for, The cheapest Radiant barrier on the market. After reading many reviews I decided to give this stuff a try. Mostly because of the cost. This reflectix material is very similar if not the exact material that hospital get well balloons are made of with some added fiber for strength. It is a very thin plastic based material, hold a match to it, and guess what happens. I'm sure that it will do what it says it will do as far as heat reflection, I could feel it during the installation process. However I don't think that it will last half the life of the metal roof that I installed it under. Unless you are on a super tight budget or do not care about longevity, look for a metalized product, like Attic Foil, or eco-foil. As a builder, I cannot recommend this product to anyone.
Date published: 2012-03-01
Rated 4 out of 5 by from I had no problems with this product being flimsy i guess they changed the product or Lowes has a better version, but my Reflectix has fibers running 2 directions every 1/4 inch or so. almost impossible for a staple to miss one. i installed this in a 1800 sq ft home all alone with vaulted ceilings and other tight places. my neighbor bought a thicker product online for less, but it was not as shiny and looked to me like it would be much harder to install around supports, vents, hips, and all the other obstacles in the attic you dont think about until you encounter them. so to me the thinness is an asset as long as you have the fibers.
Date published: 2012-01-30
Rated 4 out of 5 by from strong enough to put up, is perforated even though it says it's not This stuff is reinforced just enough that it's not too hard to put up. However, if you're going to tug on it much, it might be good to put something like a little piece of wood under the staples so they don't pull through, or use long strips of wood at inside corners. If your roof joists are like the one we've got on this older (1914) house, you may want to use 1/4 inch or 5/16 inch long staples. We have a fairly hefty hand powered staple gun, but it can't get 1/2 inch staples all the way in these joists. Perhaps it could if they were softer. I've only got some of it up, but it does seem to me that the side of the attic where it's up radiates less heat, even though usually there's more sun on that side. My main purpose is to lower temperatures for attic storage. It wasn't supposed to be perforated, but it is. The perforations are pretty small, though. I plan to use a fan to pull air through between the radiant barrier and the roof, which is why I am not thrilled with the perforations. For a standard installation they're probably a good thing. Based on my experience so far, I'd be willing to buy this stuff again.
Date published: 2012-05-10
Rated 5 out of 5 by from Worth it Stapled it easily to the underside of my roof decking w/ 1/4" staples. Getting to the corners of my roof is very difficult, but once there, the product staples easily. The imbedded threads strengthen it nicely. Doesn't tear, but cuts with scissors easily. The combination of this barrier plus barely adequate attic ventilation has made my house more pleasant ... I've got it down to 20 degrees above ambient on the hottest days, an improvement of 10 degrees or more. Feels like my house has a bit more "shade" inside - before, I felt like I was being cooked.
Date published: 2012-08-10
Rated 5 out of 5 by from Works as advertized Used this product in Dallas TX,and was amazed at the difference in attic temps during the summer. Also made a great difference in winter. I will be installing it here in Illinois.
Date published: 2012-06-30
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