Duck Brand Rolled Indoor Window Insulation Kit, 62 in. x 210 in, Clear, Covers Up to 15, 3' x 5' Windows, 15-Pack (288069)

This does make a difference. You can feel a huge temperature difference between film and glass. I am buying more so I can do all my windows for the winter. Easy to install.

The window film 1. The Shrink film is the best i have ever used during winter 2. While i do think its a bit pricy, i think it gives the best value for money 3. The size of the film is quite big, i was able to cut into smaller sections and used in different rooms in my house 4. Colour is transparent so you can still see the other end of the window. you just cant open the window until winter goes away 5. The tape that you lay down , the stickiness could be better. i think it comes off easily especailly if theres a bit of moisture where the tape is put

It wouldn’t stick to one of the window frames, despite my trying to clean and dehydrate the surface, the tape simply would slide off. Insulated my single-glazed door, and a couple of windows on the other hand pretty well

I tried a few brands of window film and definitely had the best results with this one. You cannot see it unless looking very closely. The tape sticks great and I have not had any loosen over at least a month, as I did with another brand within one day. With cold weather and single glazed windows this made a difference to loss of heat. Not incredibly but enough that it was well worth it. Instuctions are good but watching a video made it much more clear and turned out to be quite easy. I left mine overnight before using a hairdryer to tighten to plastic (which takes out all wrinkles! It's quite amazing and satisfying) and trimming the edges the following day. Cannot tell it is there, especially on white window frames.

Easy to apply and worked through winter

Ok - served a purpose. Looks terrible.

Excellent product, discovered it last year and used it as soon as temp dropped. This is old Georgian house with huge single glaze windows, it stops all condensation. Most impressive

It is so clear that we genuinely forget it is there. It has stopped all the condensation on the old single glazed windows and helps keep the heat in. It took a few windows before I figured out how to best overlap the corners with tape as these bits can pull free if not done well or the window pane is not properly cleaned and the shrinking is overly vigorous but where I've got it right it's the best glazing kit I've seen.