tesamoll Thermo Cover Window Insulating Film - Transparent Insulating Foil for Thermal Insulation of Windows - Includes Double Sided Tape for Easy Installation - 1.7 m x 1.5 m

When I bought this I didn't expect it to be as good as it was. I'm happy to say it has actually surpassed my expectations, but that's not to say there aren't some negatives about it.Firstly, I bought this because my rented house has old double-glazed windows that basically aren't double glazed. Despite running a dehumidifier to the point where the air was as dry as a desert, and the wife and I would wake up feeling hungover we were so dried out during the night, the windows were still covered in condensation. And with condensation comes black mould.So I bought this. To be honest I felt cheated when I got it. It is just a sheet of thin plastic and some double sided tape. So not worth the money, right?And then there was the putting it up. Having to find floorspace enough to cut a window shaped size, while the cat bounds around on her new crunchy crispy playground that you (obviously) have bought just for her was a pain in behi d to say the least.Depending on how big your window(s) is/are you're probably going to need a hand putting it up. Sometimes the plastic sheet hits the exposed tape before it's meant to causing rucks etc. Most of these you can sort out with a hairdryer, but some you can't. There isn't a worse feeling than fecking around with all this only to find a huge crease along your window pane that won't go away.Finally, it's up. You take the hairdryer to it and eventually you cant even see that it's there. Not only has it stopped ANY condensation forming on my windows, it has also made my house much warmer. Win!I've actually placed it to just above the window handle meaning I can still open and close my windows, and therefore I leave it on during summer. I've had the current set on for about a year.Just beware, you forget it's there. So you go to peek out the window at something going on outside only to bump your face against the new invisible forcefield before the glass. Doesn't hurt, but can break the sheeting.Overall then this is the most effective, simple, yet fiddly solution I can imagine. For the results I've had I'd say this is as cheap as chips. However, if I'm basing it on what you're actually paying for then I'd say this is overpriced. But since it's not going to break the bank, if in doubt I'd say go for it. I will definitely get it again if needed.

Fiddly and look a bit naff but effective. No more condensation and the room is warmer. Bought some more.

Before writing bad reviews for a product, one should consider the following: "Did I follow the directions?" ; and "Do I have any common sense with DIY?" If either of these are no, then it is worth re-examining your dissatisfaction or getting a replacement and trying again.I've just used this film for two big single-glaze windows in my drafty flat and am beyond pleased with the results. While the sheets were a bit cumbersome at the beginning, it all came together beautifully and the results are practically invisible, and already making the home feel warmer. The double sided tape seems to be holding up fine after warming and re-pressing the plastic during the shrinkwrapping process.SOme tips: Don't try to cut the piece to size before you apply (overhang is completely fine as you can trim to fit after its all done. Get a corner lined up then bring the rest of the plastic towards the other corner without pulling too too tightly. You have a couple minute window to readjust as you are working with it, and it shouldn't impact the effectiveness of the sticking. With the hairdryer, focus the heat along the edges first and press again into the adhesive as you go along. this will give you a firm seal and a good taut effect. Hope this helps!Some tips:

Just have a brand new patio window installed so perfect opportunity to try out this insulation method. What a waste of time and wrangling with the plastic sheet on such a large pane of glass. Applied to one door only so could make a comparison. It made absolutely no difference whatsoever to the cold coming through or the condensation which collects at the bottom. I don't know whether the plastic sheet needs to be thicker in order to be efficient, this is as thin clingfilm, don't waste your money, emperors new plastic. Also every tiny bit of fluff and dust sticks to the plastic so it's a v v v frustrating job to get it on the window clean. you clean the window first but the plastic acts like a dust magnet and attracts everything to the glass you've just cleaned and the plastic sheet. don't waste your time and energy. disappointing. Tried to give zero stars but of course you can't.

I decided to try it as my windows got really cold in the cold weather that we had last week and the condensation in the morning was awful. It took quite some time to install it properly, but it turned out really good. The whole foil is evenly stretched and you can barely see it, and you can still open the windows, so I was happy with it. Until I noticed that the condensation is still somehow getting in there.. and because it is behind the foil unfortunately I need to take it off to wipe it out. So, in the end, it was a waste of the money and time spent on sticking it on.