INSULATION MARKETPLACE SmartSHIELD -3mm 48 inchx100Ft ReflectiveINSULATION roll, Foam Core Radiant Barrier, ThermalINSULATION Shield - Engineered Foil
Condition: New
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Availability:
In Stock.
Arrives
Wednesday, Nov 5
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Size: 48"x100ft
Features
- EXTREMELY EFFECTIVE - reflects 95% of radiant energy, perfect RADIANT BARRIER.
- VAPOR BARRIER - prevent condensation, unaffected by humidity and moisture.
- SAVE MONEY- effectively low the amount of heat transferred into the home in the summer an out of the home in the winter. Great reflective material that can stop radiant heat transfer. Save big on your utility bill.
- SUPREME QUALITY - 3mm closed cell polyethylene FOAM (not a bubbles) sandwiched between highly reflective Engineered Foil on both sides. Easy to install, easy to cut, strong but lightweight.
- NON TOXIC - will not irritate skin, eye or throat. Non allergic.
Material: Polyethylene (PE)
Brand: INSULATION MARKETPLACE
Item Thickness: 3 Millimeters
Product Dimensions: 1200"L x 48"W
Manufacturer: Insulation MarketPlace LLC
UPC: 686091709338
Part Number: 270
Item Weight: 8.67 pounds
Product Dimensions: 1200 x 48 x 0.04 inches
Item model number: SmartSHIELD -3mm - Polyester
Size: 48"x100ft
Item Package Quantity: 1
Coverage: 48 square feet
R value: 15.00
Batteries Included?: No
Batteries Required?: No
Date First Available: June 16, 2015
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Nov 5
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 16"x10ft
Love this product! I use it to insulate my cat houses I make for them, during the coming cold winter months. My cats love it too! It keeps them nice and warm!
Reviewed in the United States on October 23, 2025 by Laurie
Size: 24" x 10ft
I used this to create custom fit sunshades for my side windows on my 2016 Chevrolet Colorado crew cab. My truck stays outdoors the whole day and the driver's side bakes in the sun. I already had a sunshade for the windshield, but this one roll was enough to create custom sunshades for each side window.
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Reviewed in the United States on October 3, 2025 by Alex
Size: 24" x 10ft
I purchased 3 rolls of this insulation for my motorhome windows. I've moved up into the mountains and dreading what the cold weather will be like this winter. haha! I have large windows and wanted them completely covered. I was pleased that this material is very easy to cut to the size needed. I just used a normal pair of kitchen scissors. To my surprise, I can already tell a difference from the outside heat as far as the window without the insulation and the window with the insulation. I did have an issue getting it to stick to the surface and thankfully the seller reached out to me. I'm always impressed when a seller is that involved and wants to either fix it, make it right and / or give advice. Those are the ones I look to purchase from in the future. I recommend this item if you need to reduce your electric bill or propane consumption during extreme hot weather or frosty cold weather. The product is good and the seller is as well. Buying from them is a win-win. 10 stars!!!
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Reviewed in the United States on July 22, 2025 by Kountry Aire Life
Size: 16"x10ft
I bought these for cat houses they were great my cats love being inside of the houses with this it keeps them warm during the winter it's a little thin but it does work
Reviewed in the United States on September 26, 2025 by Amazon Customer
Size: 48" x 50ft
I used this as duct insulation. Its very easy to work with, and you can feel a huge difference in temperature. I will definitely be ordering more for other projects. You can't beat the price point compared to other insulation.
Reviewed in the United States on September 21, 2025 by Breanna
Size: 16"x10ft
I bought this roll of insulation smart shield to line outside feral cat houses so that they would be insulated. The material is sturdy yet easily cut to fit with just a pair of scissors. It held up to glue being used to attach it to the housing. It looks great, is light weight, and was an easy solution.
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Reviewed in the United States on September 3, 2025 by JustJess
Size: 24" x 50ft
I used this to insulate a small area of my basement for indoor seed starting. Previously that area was very cold, and had effectively no insulation between it and an outdoor crawl space (aside from a few semi-loose plywood boards), and the area was also on top of a big poured concrete pier/slab thing. So basically, the air was around 50 F in the winter and the surfaces were cold. Also, drafts (outside air) came in from the crawlspace through slits between boards. This is despite all the seed starting gear (lights, heating mats, etc.). In previous years I have even put a small space heater down there in an attempt to try to get the soil up to 60 F+, which is where I want it to start things like sunflowers. So I bought a 50-foot roll of this stuff and cut three 14-foot strips of it. I tacked one long strip along the area that meets the crawlspace. (Used a staple gun—not sure if that's the right choice, but it's what I had.) I also laid a long piece on the concrete surface (no attachment, just laid it down and put plant mats directly on top of it), then added a third piece that ran between that surface bit and up to the wall/crawlspace interface. I stapled the that third piece onto a wooden beam, and used packing tape to attach the lower pieces where drafts were trying to blow through. This allowed a mostly leak-free insulation shield about 6 feet "high" by around 14-ish feet wide. I put back the same temperature monitor that had read 50, and within a few minutes it was up to 55. Hmm. That's good. After I reinstalled all the seed starting stuff (a few low-power heating mats, four low-power LED lights), the temperature went up to 65 degrees and stayed stable (!!). I have seen a few dips overnight down to 62, but in general this area that was consistently 50 degrees F (WITH lights and heating pads) is now mostly 65 and up (at one point it reached 70, which is actually pushing it as far as seed starting is concerned). The space heater is gone—it would be way too hot at this point, and in fact I'm considering adding a fan or something, triggered in case the temp gets close to 70, just to circulate some of the heat away. For the price, I'm extremely impressed. This stuff definitely created a thermal barrier between the super-cold cement block that the seedlings sat on—that block is such a huge mass that there's no way a heating pad is going to ever warm it up (remember, we're in a basement and this is essentially a secondary foundation wall that just happens to be super wide). The insulation also created at least a basic vapor barrier on the interface w/crawlspace, blocking a lot of drafts and little gaps. The fact that it's so thin and easy to work meant I could also tack it up around edges and corners, which is where the drafts were the worst. I know this isn't really designed to be the only insulation in this use case (I might have been better off installing batts of fiberglass, and would certainly do so if I were trying to treat an entire basement), but it's cheaper, MUCH smaller, MUCH easier to work with, AND you can wipe it down (within reason—it IS possible to rip the shiny surface). If you're looking for something very thin with a good radiant shielding effect, this is it. The only downside I can think of is that the material is thin. While this is usually a positive, you do need to be careful with it, as it's possible to rip the foil layer and have it start peeling off. That's different from a lot of other kinds of insulation (fiberglass batts, foam board, spray...) where the material itself is real tough and workable. This is thin and precise—install accordingly.
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Reviewed in the United States on February 6, 2021 by Chris Higgins
Size: 16"x10ft
I used this insulation to line the inside of a home-made 3D printer filament dryer. Unfortunately, the insulation seems to have done very little in the way of improve the heat loss through the sides of the dryer. The outside of the box still gets just as hot to the touch as it did before I installed the insulation. I have noticed that it will reach an internal temp of 80 deg C in a little over 24 minutes, where before it would take about 26 to 27 minutes to reach the same temperature. So it might have added some insulation value, just not as much as I would have hoped. but I can see I am still loosing a significant amount of heat conducting through the sides. Because after running for 90 minutes, the exterior is still holding steady at around 58-63 deg, which is the same as it was before the insulation was installed. I havent measured the amp draw of the heating element to see if that shows a reduction in amperage over time. but just a ballpark guess, the heating element seems to turn on and have the same duty cycle as it did before. (didn't time it before installing to get a baseline measurement, just not observing any noticeable obvious improvement). Otherwise the insulation was easy to install. I used a high temp double sided tape to secure it, which seems to hold well, The foil coating appears durable. and over 8 hours of continuous exposure to 80 deg hasn't damaged, discolored or otherwise affected the insulation in any way that I can tell.
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Reviewed in the United States on January 18, 2025 by RDR_Engineer