• Included: (1) 5.16' x 17.5' film sheet, (2) rolls of tape, 1/2" x 27.7 yd

• Insulates five 3' x 5' windows

• Lowers heating costs and saves energy

• Applies easily, shrinking tight, wrinkle-free and clear on glass

• Increasing the R-value of single pane window by 90%

I used these kits to seal drafty windows in an old building. It took a little over an hour to cover 4 windows. The temperature difference is dramatic and when the plastic has been well tightened and trimmed it isn't too noticable.

114 of 116 found the following review helpful:


Designed with Attention to Detail  Jan 22, 2008 By J. Small "A Bright"
It's smart for a couple reasons. Of course, the concept is simple: trap the air between the glass and the room and the air becomes the insulator. But it's all in the implementation and that's where this product shines. It uses double-sided tape that isn't so sticky that it will pull of paint when removed. Have to get that right and they did. The real attention to detail is the film material. When installed, it better not look tacky. So they formulated the material to shrink just enough to tighten it up to pull out the hard and soft wrinkles, but not pull away from the tape! Don't worry if the tape and the film lie on perpendicular planes. The film won't pull off when it shrinks. It's resilient enough not to overcome the film-to-tape adhesion. Again: brilliant.

It is also optically clear, not at all diffusive. That is another absolute must. I was simply amazed at how this product brings all this together into a cheap, effective solution to drafty old windows. Someone reviewed that the tape wouldn't stick to their window frame. Probably a surface prep issue. In my application the paint was new and firmly bonded. I even had strongly curved surfaces to tape over. I found that heating the tape with a hair dryer helped conform it to those surfaces. Directions don't address that issue and for flat surfaces it's not one. This is a great product!



63 of 66 found the following review helpful:


Great product, easy to install  Feb 11, 2007 By Jen McClurg
I've spent the first part of this winter suffering because of drafty windows in the bedrooms of my new (old) home. I found this insulation kit from 3M, ordered it on Monday and it arrived on Thursday! In about 1 hour I had 4 windows sealed. I found it simple and straightforward to follow the instructions and it worked exactly as described. It's noticeably warmer in my bedroom, and I haven't adjusted the thermostat.

One note however, there was only enough plastic to cover 4 windows, not 5, and my windows are almost exactly the size given on the label. It was okay though, I covered the 4 worst offenders so it wasn't that big a problem for me.

19 of 19 found the following review helpful:


Works well, but . . .  Dec 11, 2009 By Richard L. Elias
I have used 3M and other brands of shrink film on windows in my 120 year old house. The only problem I have with the 3M product is that you really have to cut the film to size beforehand. If you try to put it up without cutting first, it's very unwieldy. That's why I prefer kits with 3 or 4 smaller pieces; they eliminate the need to pre-cut. This isn't an important objection, I suppose, but someone may need this advice! Another caveat: if you seal a window with a tight storm window on the outside, moisture can build up on the film and drip into the sill. I have been told that this can cause the sill to rot. I haven't had this problem; one advantage of a 120 year old house is that NOTHING is or can be air tight!

17 of 17 found the following review helpful:


Kind of a Trailer Park Solution, But It Works  Dec 19, 2009 By Guy the Gorilla
I used this product to insulate two dormer windows in my daughter's bedroom, and one window in the laundry room. I still have plenty of the plastic and tape left over in case I ever have to redo one of those windows for some reason. There was a noticeable improvement in both rooms immediately, and since all three windows are covered with thin curtains, the plastic is not noticeable. In truth, if you follow the directions, and stretch the plastic tight prior to shrinking it further with a hair dryer, then trim the excess, it would be barely noticeable even if there were no curtains.

I'm curious to see how long this plastic stays in place, since I have no intention of pulling any of these coverings down once the winter is over. We never open these windows, and I expect that if they were letting heat out through gaps during the winter, they almost certainly have been letting the warm air in during the summer when the AC is on. These coverings will definitely increase the energy efficiency of the house in any season, so I'll leave this plastic up as long as it lasts. I may come back and edit this review a year or so down the road to give an update on the product's durability.

As others have noted, the kit is easy to use. Install the double-sided tape around the entire perimeter of the window (UNDER the window sill on the bottom if you have a sill); cut a piece of plastic to size (measure twice - cut once!), fit it in place, starting at the top, peel off and reset as needed to stretch it and get the worst of the wrinkles out; heat with a hair dryer to shrink it and stretch it, and finally trim the excess around the edges. If the paint where you are applying the tape is damp for some reason (because of condensation, for example), dry it off with the hair dryer first or the tape won't stick very well. The tape is amazing in that it is sticky enough to hold the plastic in place once you set it, but not so sticky that you can't make adjustments if you need to during install. Good job by 3M with designing the adhesive. I wonder if it's the same stuff they use on those yellow post-it notes.

I did three windows in about an hour, and like I said, both rooms were noticeably warmer when I finished. My daughter is certainly happier with a snugger room. All in all, a very good product.

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