3M 2170W-6 Outside Window Insulator Kit

I was able to do 2 of my windows and used whatever was left to tape up and cover a third window. I wasn’t sure this was going to work but it is amazing how well this has worked. I no longer feel the cold air coming thru. I’m poor so I can’t afford to be buying fancy windows, but I’m glad I’m poor. I used to work for someone rich that didn’t care about her employees and that’s not how I’d want to be. Better to be poor than to have money and be mean.

This will be my second winter installing these things. Note there are films you apply to the exterior of the window and films you apply to the exterior. These go on the EXTERIOR. I have small children and don't want them fiddling with the films and i worried about interior films fitting under my Venetian blinds. I prepared for these to be a major pain in the posterior to install and braced myself for hours of the film folding over on itself and working out creases. Boy was I wrong. It actually wasn't all that bad. I covered nine windows in about an hour or so. If there is a glaring crease, it is easy enough to pull the film off of the tape and straighten it out. They held up from early November to May with no punctures or tears. It has the pliability of saran wrap (it stretches) but is not adhesive so it doesn't get stuck to itself. You are not supposed to install them if it is below a certain temperature outside (I think 50 F), so don't procrastinate. I don't know what happens if it's too cold--I'm guessing the adhesive doesn't adhere as well. They tear off in one easy piece in when you are ready to take them down but the double-sided tape will stay attached to your house. I should have scraped it off but let it stay there so I can't say how hard it is to remove. My gas bill dropped in half but I don't know how much to attribute to these alone because I added these, along with a programmable thermostat and power outlet insulators, at the same time.

Using it where it is increased the temperature in my living room by 10 degrees during an extreme cold spell. Macgyvering Saran Wrap seems way too complicated, so this a good option given the price. It's one massive sheet when I was expecting two since it's for "two windows," but you can cut it down to size to fit your needs.The tape is not for indoor use but the kit is way cheaper than the ones marketed for indoor applications. Cheap packing tape that I had lying around worked fine.Since you're using it indoors you can use a hair dryer to get it tight. It can probably be tighter when I'm using it, but it's also being used on an ornate brass fireplace with various dips and knobs. After about a month it's still air tight, so disregard the "don't use a hair dryer" statement on the instructions if using indoors.

I have a window leak and while I’m waiting forever for the warranty repair this has been a life saver. The tape is strong and held the plastic in place even though 2 windstorms so far.

You get one sheet of film- 6' x 5' - If your windows are 3x5, there's not enough - you need at least 2-3 more inches to adhere it to the frame of the window.

Recomendado 100% deverdad aísla el frio de las ventanas

Product has one good attribute in the film is clear, so in the brief time period it lasted it was like looking through the window. Film is very fragile, and easily tears when stretching. The fact that is does not have the heat shrinking attribute of an interior film was also disappointing for trying to get a tight film free of wrinkles. Applied while in upper 50s, and first cold windy day, the film was simply blown off!Very disappointed.

Oct 2019: Purchased this product to cover large screens for older, larger condo insulated windows (30" x 50"). Was a little surprised that these were not heat the shrink type that I've used before for interiors. But the product was easy to install (took me about 15 minutes per screen), was easily able to stretch out wrinkles, and no problems unfolding / peeling the plastic open. There was actually enough double sided tape for 3 of my windows, plastic covered two. I've got some larger windows still to do, had to buy one pack for each of those, using the plastic sideways.I did my best to secure the tape to window (pressed around the screen frame with my thumb several times) and similarly the plastic once it was affixed to the tape. If it holds up, should do a good job creating a second vapor barrier and cutting down on drafts.May 2020: Removed the plastic this afternoon. First, all six plastic sheets were intact after a New England winter. Second, plastic removal was beyond simple - the plastic peeled away from the tape easily. The tape needed a little encouragement but by and large came off the aluminum frame in one piece and with no sticky residue. I'm a little shocked at how much of a non-issue removal was. I'm a fan for life!