SmartSHIELD -3mm 48"x50ft Reflective Insulation roll, Foam Core Radiant Barrier, Thermal Insulation Shield - Engineered Foil/White Film

This is amazing. We put this under our metal gazebo on back deck which get blazing hot in summer and couldn't sit under it.When we put this up with about a 1/4 8n air gap it stopped all the heat transfer. Now it is almost same temp as under our tree. Easy to cut not too fragile. I would buy again. Just use the right doublesided tape

Ordered this Smart Shield reflective insulation to prepare for a metal roof and I was amazed at how well this worked to keep the heat off the house. Its July and yes, its roofing time. Sometimes you just do the projects when you can, right? So I ordered this 24"x50ft from Amazon and it made it fine, but when I ordered the 48"x100ft- well, it was undeliverable. Got a refund, and just ordered directly from Smart Shield. They were great! So if you need a lot of this- I suggest going to their website to order. Back to the product review: this is only 3mm, so very thin, but very effective. Also, I have to say how glad I was for cloudy (not rainy) days when putting this stuff up because once the sun hits this, its like looking across the lake or bright white snow- its pretty blinding! And the heat radiating off this can be pretty intense on a hot summer day! Overall, this was comparable to other brands of reflective insulation. I just prefer this over the bubbles. I'm sure there are multiple uses for this- indoors/garage, RV, vehicle, etc. It certainly seems worth the price! Great company to work with, too!

Works well. Applied them to my windows and they darkened the room well as well as blocks that heat from outside. It’s been a few months and so far so good.

Liked having different options on thickness and sizes here: I just used them to insulate a deer blind. Does the job well, and easy to install.

There keep the garage cooler in the summer and warmer in the winter

I needed this thermal barrier for the underside of a metal roof that covers my deck. The white face was perfect and a 50 ft roll by 16 in width would be just right for my truss spaces and lengths. Well, I finally got around to installing the insulation only to find out the product I received was not a continuous 50 feet but had a taped seam at about 20 feet! I had to figure out where to put the piece with the seam so it was not so obvious (ugly). When I got to my last piece to cot from the roll, I was not happy to find out that my ‘50 foot’ roll was actually 49 feet 6 inches. More ugliness to adjust for. My best hope is that it cuts out some of the radiant heat. Yes, I did leave an air barrier.

Installed in a west facing bedroom that also shared a wall with the garage. Room always stayed at least 3 degrees warmer than the rest of the hous. After installing, there is only a 1 degree difference. Live on the east coast of Florida. 75 degrees is what I keep the thermostat at in recent 93 degree weather ~ room with this installed remained at 76 degrees. Very pleased ; an inexpensive solution

I can’t feel much of a difference in my room.