3M Indoor Patio Door Insulation, Insulator Kit for 6'-8" x 9' ft Patio Door, Keeps Cold Air Out and Warm Air In, Includes Heat Shrink Window Film and Scotch Window Film Mounting Tape (2144W-6)

I was a bit skeptical of any plastic insulating product for windows after reading some of the reviews but just applied this to 4 huge windows and it couldn't have gone any easier. I didn't prep with alcohol because I knew my trim was clean, but if you do prep you need to wait at least several hours before trying to apply the tape or better, hit it with a blow dryer to burn off the residue. The tape will NOT stick if you don't burn off the alcohol so maybe some people are having issues because of that. I applied the tape, made cuts are my radius corners to fill them well, overlapping tape by first lifting up the paper back for an inch or so on each side. Left one corner with exposed sticky tape up top to start and got my plastic square with window and did a 6 inch top and 6 inch down side square so I could pull across as I applied the plastic across the top of the window. Once reaching the other side I then went down 6 inches on the side pulling to match the other side - square - and continued on this way til hit the beginning of the bottom curves, left them alone and pulled down to apply the plastic along bottom window ledge, then did the sides to adjust. I found you can get this tight as a drum without having to use a blowdryer, and it will allow you to pull it up and restick to smooth out any wrinkles from a bad alignment. Once set for a bit though, it's not moving. Take a pair of scrissors and start a cut close to your frame, then push the scissors blade along with the plastic deep in the back of the blades - you can get a cut flush with the trim so you won't even see plastic edges. These are absolutely crystal clear, you cannot tell you are looking through plastic. I've got this over windows where my orchids take sun, didn't want them to get cold :) Double sided tape does come with the kit but I had ordered more and glad I did as I ran out of tape but still have enough plastic left over to do another large window and a small one. I am amazed how many windows I got out of the patio door kit, I just thought out best way to cut and the great thing about this huge sheet is that you always have a fresh square edge to work with when putting up another window covering. Wish I hadn't waited a year to try it, my orchids seem to be happier and it's kept the heat inside up several degrees. Win win. My sister now wants to try some for her house as she's seen how absolutely clear it is. 5 stars!

I initially bought the Frost King plastic from Lowe's because they didn't have 3M. After reading these reviews I decided not to use it, and ordered the 3M from Amazon instead. I can't say how the Frost King worked, but I was doubtful about it from the start because the packaging looked cheap and generic. The 3M worked GREAT, and was so easy to use. The tape sticks to the window frame (I followed the directions and wiped the wood with a wet rag, then alcohol) and the plastic sticks to the tape. The plastic is also completely clear. It's been up for about a week now, and the tape is still sticking. The plastic keeps out drafts, so it's more comfortable to sit next to a window, but I don't know how effective it will really be at lowering my heating bill-hopefully it will help a little. My windows have blinds so I had to cover them with the plastic, but I removed the handles before I put up the plastic, then reattached one of them on the outside so I can open and close the one I like to see out of. Of course it made a tiny hole at the top, but I just covered it with a piece of scotch tape. Having curtains would be ideal though, you can open them to see outside and they will insulate more. I used the patio door kit in my living room where I have 2 windows side by side and I didn't think the window kit would be wide enough, and also bought a 5 window kit-they are exactly the same, the window plastic is just a little smaller, but it will easily cover any standard window. I am returning the Frost King.

The best window insulation that I’ve used! It’s easy to install and forgiving even if you do it exactly perfectly. Very tight once applied. They leave a clear view too. Our historic home has windows installed in the 30s. So drafty is an understatement. But with this covering, the window drafts are gone!

The patio door insulation is the same plastic as the 3M Indoor Insulator Kit, 5-Window kit - just a bigger sheet. It is easy to cut and the tape works flawlessly, but the large patio door size makes the piece a bit unwieldy. This kit prevents the use of the patio door it covers, so make sure that it isn't blocking a vital exit. We have a patio door near the front door, so the kit was not a problem. We had to remove the handle for our patio door as it stuck out into the room and would prevent the plastic from shrinking. Also make sure there is a 1/4" or larger surface at the bottom of the door to tape onto. If the door has no threshold it may be difficult to tape to the floor and get a tight seal or wrinkle free finish. The other thing to consider is that the plastic stops drafts and insulates by trapping air in between the door and plastic. If the gap is small there isn't much of an insulation value, but can still help if the door is drafty. Overall installation was as expected with the window products, but I would recommend a second person to help because of the size. The film isn't invisible when finished, but is not really noticeable from the outside. From the inside it is visible, but it is clear enough not to be a problem.

Works great. Stops all the cold air.

Easy to install and works well to stop the cold. The sticky tape is not great though and I have to keep reattaching it

Me llegó sin la cinta doble cara y tuve que comprar otra cinta la cual al pegarla en el piso (porque es puerta) no pego bien, siendo porcelanato antes limpiado (muy liso). Con la marca Duck no tuve problemas supuse que sería mejor la 3M pero no fue así. recomendaría comprar la marca Duck solo por el tema de la cinta ya que si no sella bien pierde la mayoría de su función.

Was great to work with. Take your time.

I did a lot of research on these types of kits - here in Canada these 3M ones don't seem to be available in regular retailers but they get the best reviews. I'll say up front my picture makes it look a bit rippled - that's my own bad installation it's not the fault of the plastic. The plastic and tape were both top quality and it definitely makes a difference in keeping the drafts out and a bit of an air gap to keep the room warmer. The kit comes with a large roll of double-sided tape, instructions, and the plastic. You also are recommended to have a hairdryer but I wasn't able to get one and it's mostly for aesthetics anyway. The plastic is very static-ed together so pulling it apart is a two person job. There was more than enough double-sided tape and it's clear so it's not ugly on your wall or floor. There was more than enough plastic for my pretty standard 7' sliding patio door. Then just held it up to the frame, marked it and cut it before holding it up again and attaching to the tape. Tape seems to be holding week 3 weeks in and the plastic is clear and not warping or anything. It's not completely tight as it should be so it does rustle a bit with the drafts - which it is keeping out. Very pleased to be saving some on my gas bill without trying to get my landlord to re-caulk or replace the whole door. I think it'll pay for itself, but even if it doesn't it's worth it not to have the room be freezing all the time!