DUCK Brand Rolled Shrink Film Window Kit, Insulates up to 10 Windows, 62 in. x 420 in, Clear (287406)

Buy this pack, the tape actually sticks, the plastic film gets nice and tight when using a hairdryer. I covered 7 sash windows with a single pack, and still have some spare. Totally worth the money.1. Clean the windows and the area you will stick the tape.2. Apply the tape accurately and peal the top left and side back about 4 inches, leave the backing tape sticking out.3. measure the height of the window with tape, and add about 5cm, cut the plastic to the length.4. Apply the film to top left while ensuring the left side is over the tape, carefully maintain the light tension while you peel the backing tape and press the film on about 30cm at a time. (Or when you get good you can peel the top tape totally and then apply)5. Hair dryer the taped areas esp. any wrinkled areas, then just steadily the whole area, keep the dryer moving slowly.6. cut off excess, replace blinds or curtains etc. and pretty good results.

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.

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

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.

The media could not be loaded. Really recommend these if you have single glazing. Were a bit fiddly to fit and not stick to itself and to cut and fit straight. However once fitted and (I left mine over night before) tight - with a hairdryer - just spot on! No condensation, good improvement to heat retention in the room, sound improvement, very hard to see (creates a very slight hazyness), just a really good product. Can't yet comment on how they will come off once they are no longer needed but we'll see. Really really good.

Ok - served a purpose. Looks terrible.

Only been applied about a week ago to three small windows. So far, the rooms are warmer and the noise from outside is noticeably reduced too. Hopefully it will stay on and working all winter.

Easy to fit on windows, stronger tape than cheaper one I bought so didn't fall straight off. Better quality film. Definitely worth extra money .