The specs stated that the 2' roll comes in at 24.5" but it falls shy of 24" by about 1/4". Now I have to change my installation plans because of this fact. Had I known it was actually shorter than the stated width prior to me buying I could've went a different route. Not the end of the world but it would be awesome if they'd state the REAL specs so people can make a better informed decision. I do happen to love the fact that it is lightweight, easy to cut and work with.

I cut this product ( 24x50 ) to fit my garage door windows ( quick and easy if you make a template ) I cut just slightly larger then the window and I just pushed it in the grooves so there wasn't any need for tape) 10 small windows which let in a lot of heat but since installing this product it has decreased the heat dramatically, it will also make your garage dark . Just leave your garage light on I always do, use a LED bulb. Works great, highly recommended!

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!

Purchased White/Foil 3mm - the foil side has perforations which are not mentioned in product description. Also not indicated on packaging flyer. This would be great for rafter insulation, but that is not what I was buying it for. Disappointed, but too late to return. Will use and update with how reflective it is.

Seems to be doing its job with reflective side in windows despite perforations.

I used this product to insulate my travel trailer. It really works well as a insulator of heat, you can feel it blocking the cold the minute you apply it to a surface. It is lightweight and easy to cut with scissors. I can easily attach it with a staple gun without worrying about popping air bubbles. I also created a skirt to go around my rv and it worked for that purpose as well. It's a bit thin so you want to really attach it well so the wind won't take it away.