BDF NSN70 Window Film Transparent High Heat Rejection & UV Cut (Very Light) - 36in X 14ft

I have used a free window films over time and this was one of the top films I have used. It went on well and is very transparent as well as it does a fantastic job blocking radiant heat from the sun. I used this film on my storm door for that very reason and I would recommend it to anyone. Super easy to install and the energy I’ll save by blocking the radiant heat will be awesome. I plan on ordering more and using it on my windows next!

One side of my new build house is south facing and after multiple rounds with the heating and ac folks I decided to try this film to reject the heat. I’ve completed the bottom half of three windows and wanted to share how clear this goes on. It’s a little difficult to work with as it’s not very forgiving- even without losing control of it I still have one or two little spots where it looks like it’s been folded and therefore creased. I saw another review where it apparently went away after a few days so I’ll update this with this review to confirm, as well as give an opinion of whether or not the heat is truly reduced. Update: it’s been about 2 weeks and I really like this product. My extra ecobee sensor indicates that the pantry, which always runs hot (74-76 degrees when the thermostat is set at 70), is registering at 71. As I worked through other windows I tried two methods of install. The first was how the instructions say to put them on, by slowly peeling the product backing off as you worked to attach to the window, and the other way I tried, was I laid the precut piece on a table and peeled it all off there, and then I attached in one fell swoop. Option 1: it takes about 20 minutes to apply, and it appears there are little to no bubbles under the film. The film does peel off periodically as you are installing and will fold over on itself which creates creases that do not come out. Over time they will minimize but if you’re like me, you’ll see them. No one else will notice it, but it drives me crazy. I also noticed there were little bubbles and almost like a smeared effect on one or two windows at the bottom and the bottom corners. Overall, it gives a clean look but definitely leaves a few blemishes, even after a few weeks of adhering. I suspect it’s because I couldn’t really get the back of the film as wet as the window’s because It was already so close to the window, creating a more dry, and therefore more difficult hang. Option 2: after I peeled the film backing off, I would apply a lot of the spray to both the window and the film, then line it up from the center and let it just do its thing. It behaves a lot like tempered glass for a phone so if you start in the middle of the glass and let go, it attached quite nicely to the window all by itself. Once it’s on, I then smoothed out as many bubbles as I could. I did panic a bit because it appeared smooth but when I came back an hour later I saw a lot of bubbles. It took about 7-10 days of leaving it alone, but they are completely gone now and the bottom and corners look great. You cant even tell there’s film on the windows. This way took me closer to 12-15 minutes once the film was cut so the more efficient install time also made it nicer to use this option.

this film is very transparent, doesn't affect looking in or out. It's very difficult to evaluate, but I estimate it reduces window temperature about 5 degrees. Installation on smaller windows is fairly easy. The bubbles sometimes take a long time to disappear, anywhere from a couple days to weeks. I only had 1 window that the bubbles didn't completely disappear. No matter how much you clean the window, you will probably get a speck or 2, but hardly noticeable after the bubbles disappear.

Now that we are well into summer I haven't noticed any difference in temperature at all (despite other reviewers claiming significant temp drops). I found the product tricky to handle and install and I would rate my handyman skills as well above average. Absolutely nothing whatsoever can touch the adhesive side once the backing paper is removed and the windows themselves have to be spotless without any debris, paint spots etc on them or else it will result in a large air bubble. The squeegee tool included was far too small and at times left scratch marks on the window film. If I had to do it all over again I wouldn't have bothered installing this.

I purchase the BDF NSN70 Window Film Transparent Ultra High Heat Rejection & UV Cut NSN 70 (Very Light) so YMMV. My use case was simple — I wanted a non reflective film to repel heat/sunlight on my single paned glass storm door to prevent my 100 year old wooden front door from sustaining heat and sun damage. The instructions and video were helpful, but you’d have to be Bob Vila to affix this properly, although I did a pretty good job all things considered. After proper application, the film does bubble, even days later, and that would be the lease of my worries, other than it seemingly just doesn’t seem to do anything. Perhaps it repels certain spectrum of light but it certainly doesn’t repel heat to the touch. My door is hotter than ever. I haven’t used equipment to test it or anything, but I know hot when I feel it. Thankfully I bought some car windows shades and will just Jerry rig a viable alternative. Also need to figure out how to remove this film without ruining my custom storm door.