40" x 80" 118mil Single Reflective Foil Insulation Foam Core Heat Radiant Barrier 21.53 sqft Aluminum Foil Finish White Foam Heat Shield

My house gets a lot of heat from the south wall in the summer. I decided to cover most of it with some kind of insulation. I bought three different kinds and this was one of them. This one worked the best for my purposes. I just taped it near the top of the wall and hung it down lengthwise. I checked using an infrared camera and it was working way better than a similar material that I also tried. So I ordered three more to finish off the wall. I oriented them shiny side in, because there are windows and I didn't want to blind people outside. So they get the white side instead of the mirrored side. A little bit of faint bluish light comes through the material from the windows in the daytime.

It does work, using it on the inside of my car as a sunroof shade. Cuts the sun and it insulates the roof.

Works as a foam barrier should . Lost a star because it comes folded up vs a roll as showed in pic. Reflective material & foam gets creased. Not a deal breaker though since I’m cutting it up. Others wanting the whole sheet flat might be upset.

very good product

Really.... A review of thin insulation 😂

Great for winter/hot summers to keep out sun/cold

Easy to install. Just cut to size and place in the window frame. This works well for windows that have the glass slats that you use a lever to open and close. They leak air in the wintertime. Haven't had any issues since putting this in the window to block the air.

I couldn’t use it, it was a joke. 80” long = 6.6 feet, roughly. Mine came and it was only 2 foot by 3 foot. It wasn’t enough for the project I bought it for. Total waste of money. If I could give it -5 stars I could because this was for a small shed I was building and since I couldn’t wait for a return and another delivery I had to run out and buy it. Don’t waste your money!