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
Friday, Feb 6
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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: 8.7 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:
Friday, Feb 6
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: 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
Love! I bought to line the inside of the houses for my ferals. Some are installed with straw. Some have a heating pad. But all the houses have this to line and works great! Even in -25 degree weather, it helped keep the house with straw 30 degrees and ones with the heating pads it helped keep them to 45 degrees.
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Reviewed in the United States on January 12, 2026 by Anna
Size: 24" x 10ft
If you’re looking for a simple and efficient way to improve your home or office’s insulation, the SmartSHIELD -3mm Reflective Insulation Roll is a solid option. The foam core and reflective surface work together to block radiant heat, helping maintain comfortable temperatures indoors. It’s lightweight yet durable and easy to cut for custom sizing, making installation a breeze. Whether you’re insulating a garage, attic, or any other space, this roll delivers reliable performance and can help lower energy costs. Pros: 1. Effective Thermal Insulation: Blocks radiant heat and improves temperature control. 2. Easy to Cut and Install: Customizes easily for different spaces. 3. Lightweight Yet Durable: Offers lasting protection without added weight. 4. Versatile: Ideal for home or industrial applications. Cons: 1. Limited Size Options: May not be sufficient for larger areas. 2. Requires Careful Handling: Tends to tear if not handled carefully during installation. For those looking for an affordable, simple way to enhance insulation, the SmartSHIELD Reflective Insulation Roll is a practical choice. It provides solid performance without the hassle, helping to keep your space more energy-efficient year-round.
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Reviewed in the United States on December 17, 2024 by Zoe Mechler
Size: 48"x25ft
actually 4 1/2 love this stuff definitely works in blistering heat and freezing cold easy to use but must be protected if used outside the silver part will come off and the foam can be crushed if to much weight is applied but even at that it works better than the similar kind better heating and cooling in my windows.....
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Reviewed in the United States on January 15, 2026 by Amazon Customer
Size: 48" x 10ft
I am a full time RVer. This year I used this insulation for my bedroom windows. Not only does it help with temperature control, but also helps with sound deadening. Great Product!
Reviewed in the United States on December 8, 2025 by LeSc