Model # BP48100

Internet #202092205

Store SKU #469837

Store SO SKU #441714

Reflectix 48 in. x 100 ft. Double Reflective Insulation


48 in. x 100 ft. Double Reflective Insulation

  • A wide roll for large projects
  • Multiple residential applications
  • 48 in. x 100 ft. Double Reflective Insulation
$13545 /roll
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Product Overview

For a versatile insulation product, select Reflectix Insulation to help save energy costs throughout the home. Whether you use it in a crawl space, radiant floor, attic or walls, you'll find it easy to handle and install. Reflectix requires only basic tools: a stapler, tape measure, utility knife, straight edge and safety glasses. Since our insulation is fiber free, no protective garments or respirators are required.

  • Reflectix 48 in. wide contractor size roll of double reflective insulation that is easy to handle and install
  • R-values range from R-3.7 to R-21 depending on application
  • Our energy saving applications include: HVAC ducts, water pipes, garage door, knee walls and water heater
  • Made in the USA at an ISO 9001:2008 manufacturing location
  • Class A / class 1 fire rating
  • Inhibits condensation
  • No mess - no itchy fibers
  • Does not promote the growth of mold and mildew
  • Reflects 94%+ radiant energy
  • Will not compress, collapse or disintegrate
  • Durable and lightweight
  • Does not promote nesting for rodents and pests
  • Vapor and radon retarder, not affected by moisture or humidity
  • Additional applications include wall and roof structures in metal and post frame buildings
  • Large rolls for big projects are available through the special order program or on
  • Eco Options approved product
  • The right insulation can save on energy and heating and cooling bills. Check out our Buying Guide for helpful tips.
  • How much do you need? Let our calculator help:

    Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

It says R3.7 to R21, depending on application.

What would its R value be if I used a single layer of it to block out sunlight on the inside of a picture window?
Asked by: David
There are three ways that heat is exchanged: Radiation, Conduction and Convection. R values represent a product's ability to slow the flow of heat by conduction. It really isn't a measure of its ability to handle radiant energy. A radiant barrier is basically intended to continuously reflect back heat rather than slow the rate of conduction. The Department of Energy has a nice description of a radiant barrier:
Answered by: cliff
Date published: 2017-02-25

can this product keep pipes from freezing?

would this work if I put this around my trailer to keep pipes from freezing during winter
Asked by: Michael
Dear Michael: The reply from the Reflectix Technical Group rep was interesting. Two key points: (1) He/she stated: "Our products are tested in the same manner as fiberglass and foam." This is not correct. Fiberglass and foam insulation manufacturers provide an R value "per inch" for their products. You can see this on the Home Depot website, e.g. with Foamular foam board (R-5 per inch) and Owens Corning fiberglass insulation (from R-11 at 3.5" to R-49 at 14") Reflectix does not provide a similar R value for their products, because the shiny bubble wrap has an R value of just 1. Reflectix tests and R value claims are all based on "assemblies", e.g. a simulated wall with drywall, wood studs, an air gap and a layer of Reflectix. (2) Reflectix claims only R-2 when it is used for pipe wrap -- and no ASTM test results are shown for cold winter applications. The performance of reflective / radiant barrier products varies significantly with the temperature, and it would be helpful if Reflectix would provide ASTM test results for each application assembly -- in winter and summer. Fortunately, Home Depot offers other pipe insulation products that are more effective, e.g. foam and fiberglass pipe sleeves with R-3, which can be combined for R-6. See: Armacell Model HST07812, Home Depot Internet #100585113 Store SKU #420390 and Model F13XAD, Home Depot Internet #100118939 Store SKU #806938 Store SO SKU #1000091823 I hope this is helpful. Mark
Answered by: BvilleBound
Date published: 2016-12-13

Can this be used to go behind paneling on basement outer walls for insulation?

Asked by: cabcab09
Dear CabCab and Home Depot customers: I am puzzled by the recent reply from someone in the Reflectix Technical Group. They said, "Respectfully, the responder from Mass. is in error. Most Reflectix assembly R-values are valid year around (we state specific thermal performance “per application”). Our products are tested in the same manner as fiberglass and foam. " It would be helpful if the Reflectix Technical Group could provide more details on the "errors". First, Reflectix is NOT tested in the same manner as standard insulation, e.g. fiberglass, rock wool, foam board and cellulose. You can see this on the Home Depot website. Standard insulation is tested as a material with an R value per inch of thickness -- for example, R-13 for 3.5" of Owens Corning fiberglass, and R-5 per inch with Foamular foam board. In contrast, Reflectix is always tested as part of an assembly, e.g. a simulated wall with 2x4 studs, dry wall, an air space and layer of Reflectix. Why? Because the shiny bubble wrap that Reflectix is made from has very little R value by itself -- only R-1. The sealed air gap that you must build / create provides almost all of the claimed R values, not Reflectix. Second, the performance of Reflectix and other radiant barriers varies with the temperature -- better in summer and poor in winter. In a cathedral ceiling, for example, Reflectix claims R7 in summer but only R1 in winter in the northern USA. Why? In summer, a hot roof emits lots of radiant (infrared) energy that can be reflected. In winter, cold cannot be 'reflected' and warmer air inside your home does not emit much infrared energy. Reflectix should provide ASTM test reports that show R-value performance in summer AND winter temperatures for walls, crawlspaces, ducts and other applications and post these reports on their website. I look forward to more detailed information from the Reflectix Technical Group. Mark
Answered by: BvilleBound
Date published: 2017-07-10

I have a room and bathroom that have wall which has attic space in the other side of the wall...

I have a room and bathroom that have wall which has attic space in the other side of the wall. The attic side has batt insulation on it, but the walls are still a bit warm. Can really feel it in the bathroom because of the tiles absorbing the heat. Can i staple this over the batt and. Seal the staples with tape to help mitigate the heat? This will only be temporary until I get the central air replaced and then get professionally installed Radiant Barrier and blown insulation. Hope bville answers!
Asked by: Ab
It's moisture a concern if my bathroom is Tile > cement board > batt > attic?
Answered by: Ab
Date published: 2017-03-24
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Customer Reviews

48 in. x 100 ft. Double Reflective Insulation is rated 4.6 out of 5 by 49.
Rated 5 out of 5 by from good energy saver I installed 2 rolls of the reflectix 4' x100' radiant barrier in my attic as well as a 10W solar gable fan. The measured temperature of the attic has dropped 10-15 degrees even though I have only done about 40% of the attic space with the barrier. I recommend using a lightweight staple gun like a JT21 to attach the product to the trusses since it may involve a lot of stretching and working in tight spaces.
Date published: 2010-08-09
Rated 5 out of 5 by from Very easy to install, no mess, looks great too Compared to all other types of insulation this is easy and clean to install. I used on HVAC supply ducts. No fibers or dusting from the product at all. Cuts easily with a scissor or utility kife and straight edge. Very strong and lightweight at the same time. I simply made spacers out of leftover strips of the material to get the best R factor as the air space doubles the R. Metallic tape sticks very well. While there are other products with higher R factors, none are as easy and clean to install. Highly reocmmended.
Date published: 2012-03-27
Rated 5 out of 5 by from Insulated the heat pump with it My sister's house in Phoenix AZ did not have insulation on the return air ducts running through the attic. I bought a 4'X 125' roll of Reflectix insulation, insulated all the return air ducts, coated the exterior of her heat pump air handler (factory insulated with 1" fiberglass to about R3?), had enough left over to coat the walls and ceiling of the mechanical space in the attic that the heat pump is located in. Had 16' left over, and insulated her garage roll up door as well. I also use this in my motorhome to cover the windshield, roof vents, and some windows. It keeps out the cold, light and heat in summer.
Date published: 2012-02-17
Rated 5 out of 5 by from Reflectix Rocks An absolutely outstanding product. We used Reflectix to insulate the duct work in our basement. Due to the very small tolerances we required a thin, flexible insulator and this was the only fit. Using the easy to follow instructions we have already seen a noticeable drop in our utility bill whilst seeing an increase in whole house comfort. The larger 4ft roll cuts easily, if required, and makes installation a breeze. We did a cost comparison against fiberglass and Reflectix worked out to be considerably more affordable whilst offering comparable or better insulating properties.
Date published: 2010-11-13
Rated 5 out of 5 by from Easy to work with and effective Received two 100' rolls right on time and began to insulate the pony walls and south wall in my attic. The product went up very easy and after my first wall I found it much easier to measure and cut first before installing. Cuts very easily with a straight edge and a sharp utility knife. I can already feel the difference in the attic temp. I saved over $1,000 doing this myself and it only took me four hours.
Date published: 2011-05-16
Rated 5 out of 5 by from Easy to work with, good value I bought this to insulate the inside of my steel garage door, and was debating over the 2 foot and 4 foot widths. For whatever reason 2 of my garage door panels are different heights than the other two, so I would have to custom cut anything I bought. This stuff is very easy to work with, rolls out nicely, cuts easily, and I was able to install it using aluminum foil tape without any problems. My only concern is that it may not be enough insulation (R-factor) for my garage, but that is not the problem of the product, it performs as advertised.
Date published: 2011-01-23
Rated 5 out of 5 by from Makes a big difference I am in the process of installing Reflectix radiant barrier in my attic. The job is about 50% complete. It started sleeting today, and as I went out and looked at my roof, I can tell exactly where the radiant barrier is and isn't! All of the sleet has melted off where there is no radiant barrier. Sleet still remains on the roof top in the areas with the radiant barrier.
Date published: 2015-12-27
Rated 4 out of 5 by from Have to wait and see.... I see a great many applications for this product in many areas of the home and will be using it in the future. Overall this product is wonderful, excellent consistency and quality in its fabrication. Currently being used primarily in the crawlspace of the home. Wrapping over the old insulation of the ducts to tighten, seal and clean everything up. (see attached) I will also be using this product as part of an insulation and vapor barrier system I'm building for the walls. The reflective qualities of the product should also prove to be very beneficial in helping to light up the space when you do inspections or need to do any repair work under the house. My only concerns will be the long-term stability/performance of the product. Only time will tell if drying, cracking or flexibility becomes an issue but I don’t anticipate any problems.
Date published: 2012-12-18
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