Model # BP24100

Internet #202851855

Store SO SKU #441714

Reflectix 24 in. x 100 ft. Double Reflective Insulation


24 in. x 100 ft. Double Reflective Insulation

  • A wide roll for large projects
  • Multiple residential applications
  • 24 in. x 100 ft. Double Reflective Insulation
$6876 /roll
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Frequently Bought Together

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 24 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
  • 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
  • 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

    You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.



Product Length (ft.)
100 ft
Product Thickness (in.)
.3125 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


this is a cabin with a crawl space, floor is very cold and we want to put down a hardwood floor instead of carpet. don't think the crawl space is insulted and don't know if a person can get underneath to do that
Asked by: lakelover
There are two very effective installation techniques that pertain to your application, a single layer R-16 or a double layer R-21. Please refer to the “Installation Guide” on this product’s webpage. Access to the crawl is "have to".
Answered by: ReflectixTechnicalGroup
Date published: 2016-09-19

How does this product work as garage door insulation in winter months? Can double layers be used to increase the R-value?

Asked by: 1938
Reflectix wall and floor 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. Please refer to the product webpage – scroll down to “Product Overview”, then to the "Info and Guides" and click on "Installation Guide" - the applications are listed alphabetically, click on the installation of interest and you will be provided with the instructions that you require. A double layer would add an R-1.1. Thank you for your interest in Reflectix products.
Answered by: ReflectixTechnicalGroup
Date published: 2017-02-09

heat from summer sun

I know the r vaule is not high, but will it reflect the heat from the summer sun from iside the garage door? I live in the desert southwest and my garage door faces west.
Asked by: cloe
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. Reflective insulation is tested in the same manner as fiberglass and foam products, and in wall and floor systems, provides a year around R-value benefit. But, for your southwest garage door application, your primary benefit will be a "radiant barrier" which will block 94% of the radiant heat that ordinarily would go into the garage. This is a very often installed and beneficial application.
Answered by: ReflectixTechnicalGroup
Date published: 2017-04-20

Reflective insulation over the slated ceiling

One of my bedrooms located directly under the roof - no chimney. Construction is about 50 years old and apparently original insulation was not good - the room is cold during the winter and even bigger problem - hot over the summer when sun heats the roof. It's a town house, so I cannot do anything on the structure outside - only inside my bedroom. So I decided to staple (or glue) reflective insulation roll over my ceiling from inside and then glue over reflective foil barrier styrofoam ceiling panels 20" by 20" ( the are very lightweight and good looking). My question is - will this installation of the reflective barrier over the ceiling help little bit to prevent heat from sun coming from the roof down to ceiling and heat up the air inside or it just a waste of money? I also hope that reflective barrier on the ceiling will keep room warmer in the winter by reflecting some heat inside coming out. I will appreciate professional opinion. AD
Asked by: Alden
Dear Alden: The Reflectix rep just replied and referenced installations in a crawl space as somehow equivalent to a ceiling or attic, with links to the crawlspace installation documents on the Reflectix website. Two notes: (1) A crawlspace and ceiling / attic are very different from an insulation and heat transfer perspective. In a crawlspace, you are trying to block the movement of cold air up into the warm house, and the ability of cold air to contact and chill the floor. In a ceiling / attic, Reflectix can block radiant heat from a hot roof. So, the R values quoted for a crawl space do not apply to a ceiling. (2) Reflectix Inc. does not offer installation guides for a standard ceiling, only a cathedral ceiling -- and makes no R value claims for a standard ceiling or attic. I hope this clarification is helpful. Mark
Answered by: BvilleBound
Date published: 2015-11-08
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Customer Reviews

24 in. x 100 ft. Double Reflective Insulation is rated 4.6 out of 5 by 36.
Rated 5 out of 5 by from Easy to use product for Garage Door Insulation I used this to cover the inside of my 2 car and 1 car garage doors on my 3 car garage. These doors are aluminum and face the west. They really heated up in the summer making the garage extra hot. I followed the garage door installation video on the manufacturer's website and the installation turned out great. The 100 foot roll weighs 10 pounds, so the weight on the garage doors was about 6 (on the double) and 4 pounds (on the single door). I tested opening both door by hand and didn't notice any difference in the extra weight on them - so I didn't need to adjust the springs. Overall, it was a very easy installation. I used 1" wide double-sided carpet tape to attach it after cleaning the rails and styles with denatured alcohol to make it stuck really well. The garage temperature is much better, the room doesn't echo as much, and it brighter due to the reflection off the doors. It also cut down on some of the rattling sounds when the doors open and close. If you live in a hot area, I would recommend this on any south or west facing metal doors.
Date published: 2013-10-15
Rated 5 out of 5 by from Easy choice to insulate garage doors This is a great product to help control the climate in a garage. It was simple to cut to size for the garage door panels. For now I just have it pressed into place (cut it slightly larger on the height) using the lips of the metal garage door. The roll was large enough to do a two car and 1 car garage door with some left over and took about 30 minutes. It's already making a huge difference in temperature from the radiant heat of the sun on the door and this will definitely help the room above it not get so warm. I highly recommend this product for insulating a garage door. This will definitely pay for itself in a matter of months.
Date published: 2013-05-28
Rated 5 out of 5 by from Works really well on garage door! I installed the Reflectix radiant barrier foil on the inside panels of a double and a single garage door. I installed these by using not only double-sided tape but also by securing the foil sheets with the existing door panel hinges. The installation worked out really well. Now, when the outside of the garage doors measures a hot 102 deg F on a sunny day, the inside of the same doors stays at about 70 deg F. Wow! What a difference it makes. Now it is almost the end of October in Austin, TX, and outside it is quite a bit cooler than what we see in summer. I am waiting to measure the temperature differential on a hot summer day. Home Depot did an excellent job in shipping the foil quickly and also charging for it very reasonably.
Date published: 2013-10-22
Rated 5 out of 5 by from Excellent Product I started a home project for insulating my garage doors. First I applied this great double sided insulated foil to the garage door panel using double sided tape. I then applied the ridged foam panel boards I also bought from Home Depot over this to bring the R value to a 9+ range. My two car garage is now 20+ degrees warmer this winter than before I added this insulation.
Date published: 2013-12-10
Rated 5 out of 5 by from Product is what the manufacture states. Excellent ! Wrapped 8" duct work. Trunk line. Worked great. Use foil tape. If you use HAVC duct tape, don't pull the tape to tight. It will release when heat activated. Just pull snug.
Date published: 2012-12-18
Rated 5 out of 5 by from Easy garage door insulation alternative I used this material to insulate my south-facing garage door in lieu of the foam insulation kits that are available. The material is similar in nature to the auto sunshades you can purchase at big brand stores (reflective with the bubble-wrap material in the middle). The material is relatively lightweight (~less than 10lbs for a doubler car garage door), and is easy to work with. As one previous review mentioned, using a pair of sharp scissors may be easier than using a knife. I tried both methods to cut (knife and scissors), and found the scissors to be much easier. I was able to install the insulation by simply cutting ~1in larger than the garage door channels, and sliding the material in-between. I used double-sided carpet tape in minimal spots - only in areas where the insulation seemed to fall after cycling the garage door up and down a few times. Unfortunately, I do not not have a baseline temperature to do do before-and-after comparison, however, my perceived feel of the garage temperature after the installation is that the temperature is ~5-10 degrees cooler. However, there is a distinct different when I touch the garage door in the areas with insulation versus the areas without.
Date published: 2014-06-12
Rated 5 out of 5 by from So easy to work with. I installed this product all by myself on the inside of my garage doors. It took me about 2 hours to measure, cut the pieces and install in the doors. Really looking forward to seeing how well it helps reduce the very hot AZ temps in my garage and by extension the inside of my house in the next couple of months. It was totally painless to install. :)
Date published: 2014-05-06
Rated 5 out of 5 by from Easy to install I still have to see how well this helps my garage in the winter but installation was easy. I have a single, two car garage door. I measured and cut each panel, then used Loctite PL375 to glue it to the sections. I didn't have to make any adjustments to the garage door opener and I have a good amount of the insulation left over for something else. I may consider adding another layer or using it in the attic. My garage is part of the house but not heated. I'm hoping to at least keep it above freezing this January. The bedrooms above the garage get pretty cold, especially the floors. The finished look is definitely better than the plain steel panels. I think it's quieter in there too, I don't hear the cars passing by any more.
Date published: 2014-11-01
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