Easiest Way To Save On Your Heating Bill | Window Insulation Kit!

[@EverydayHomeRepairs]

Frost King 1-Pack (84"x 110") - geni.us/HTXM Frost King 3-Pack (42"x 62") - geni.us/9ruPe 70% Isopropyl Rubbing Alcohol - geni.us/eJBhm DISCLAIMER: This video and description contain affiliate links, which means that if you click on one of the product links, I’ll receive a small commission.

[@ItsAlive111]

I saw someone create a little wooden frame insert to the inside of the window. Then attached this plastic to the frame instead. Easily removable.

[@EverydayHomeRepairs]

Not a bad idea, I like it!

[@BlueGillage]

I did the same thing. I made mine like 10 years ago and they're still holding strong. Knock on wood.

[@EverydayHomeRepairs]

@@BlueGillage Nice, thanks for the feedback!

[@brothermine2292]

I used blue painter's tape to tape the edge of the plastic sheet to the wall around the window. That's easy to remove too.

[@GetReady4LiftOff]

​@@BlueGillage knock on wood is superstition, witchcraft you believe in evil spirits that when ymknock on wood, evil spirits will be afraid and leave. it means you have no faith in the Lord Jesus Christ who died on the cross, who is your mediator in heaven, who has power to forgive your sins.

[@dontderockmerizz3211]

My only issue with these is in the spring when you remove it the tape leaves a residue behind. Other than that it works well

[@dalesworld1308]

I used this on a few windows on my old house when I bought it. Removing it also removed the paint where the tape line was. Granted my house probably had a lot of layers of old paint that was ready to let go.

[@oxxnarrdflame8865]

I’ve used it for years. For some windows I run the tape around the outside of the window trim, it’s easier to trim off the excess and looks cleaner. For other windows I make 1x2 frames, attach the plastic and then add a strip of foam insulation. I then slid them into the window. This way I can take them out on warm days to open the window to air the house and put them back in for the cold night. I remove and store them in summer. I get many years of use before I need to replace the plastic.

[@gobbletegook]

Yes...around the outside worked best for me

[@donhgr]

New windows last summer and it’s unbelievably made a difference for the better

[@EverydayHomeRepairs]

Oh yeah, can be HUGE change for sure 👍👍

[@SleepyKittens]

Given the impossibility of removing the double-sided tape in the spring time, this spring, I put on thicker plexiglass that I bought used and cut to size, and screwed them over the exterior of my sunroom windows (3). This winter, I haven't had to use the space heater in the sunroom when temps dropped to subzero. My parents had gotten a product kit with that sandwiched a very thick clear plastic sheet (reusable/cut to size) between 2 plastic frames. Those should last several years and probably was more expensive, but better than the heat shrink alternative.

[@georgequalls5043]

Used to do this all the time in my 100+ old house with single pane windows. Rope caulk too. Made a huge difference in the comfort level.

[@EverydayHomeRepairs]

Yeah, I think that is where you get the massive impact. I had a rental property from 1904 and it made a BIG difference.

[@Warp2090]

Wait how does a cold surface effect the indoor tempature if theres no air blowing

[@georgequalls5043]

@@Warp2090 conduction.

[@georgequalls5043]

@@EverydayHomeRepairs never tried it but one could triple pane it by covering the window sash and the frame.

[@georgequalls5043]

@@Warp2090 also, air is constantly moving. Look at the space lit by a sun beam.

[@gobbletegook]

I was actually able to cut a hole in the plastic film and reinforced it with clear tape. It allowed me to have access to the wand in order to open/close the blinds. It shrunk nicely around it/didn't show too much. It certainly stopped that air convection that you can feel coming off a cold window and dropping down to the floor

[@johnmcclintock4482]

I always use it and have great results. It also keeps humidity inside when it gets cold outside, and you get less moisture/ice buildup on the inside of the windows when it really gets cold. Also, when it gets windy outside, I use an incense punk to check for leaks at the corners.

[@robertbauer6723]

Did this in an old house with the sash windows once. It made a huge difference.

[@dougdiller2906]

I used it over 40 years ago on my parents' bedroom windows (single pane). The windows were on the NW corner of the house (the cold side). The plastic came down about 2 years later & my dad said he could immediatly tell a difference. It was cold & windy winter in central Illinois.

[@rrome6178]

I have used that product before on a window at work. It helped a lot. I had difficulty just because of the location of the window and a desk in the way. I think in your example, I might have only pulled tape backing off of the top and hung the sheet from there first then removed a side and stick it down, then the other side and then of course the bottom because for me it would be sticking every which way I wouldn’t have wanted. Another thought is to pull down a little of the backing on all four corners. Apply the plastic to those small sticky parts. Once it’s where you want it, then those loose pulled backing pieces can be pulled all the way to its other end and the plastic can be smoothed onto the remaining sticky tape. Great tutorial!

[@axelbrode4673]

We used to do this when we lived in Ohio. Not needed in Florida. It does help for sure. When I lived in an apartment with a slider I had to put the thermostat on 90 to get 70 degrees. That stopped when we put plastic over the slider. Good advice for sure.

[@srobeck77]

Its the same situation in hot summers. You're trying to insulate the space and keep it at a different temp then whats outside. The actual different between winter and summer months is that the more sunlight you can block out in summer with blinds or w/e, the lower your bill will be. And then the opposite would be true for winter but to a much less degree since the suns rays are much more faded.

[@kommoncents0000]

Just wondering if that would create unwanted condensation, inside or outside maybe some thick curtains or thick fabric blinds if they make them.

[@brothermine2292]

What I really want to thermally improve is the glass sliding doors to the patio, without losing the ability to occasionally use the door to access the patio.

[@marklundeberg7006]

Nice. It should also help eliminate moisture that condenses behind the blinds. I get < -30C for some nights every winter (Alberta), and I have cellular blinds and even run humidifiers a bit. So there is a lot of frozen condensation. It's annoying to have to go around with a towel constantly to wipe up the drips. I think next winter i will at least seal up the windows that I never open the blinds on. Worried though that kids fingers will be poking holes in that plastic.

[@kookiethebear]

These kits are not very efficient, but are costly for something disposable. Use the better solution - heavy curtains, and still have use of your blinds.

[@DaHaiZhu]

You should go over how to remove the tape when removing the film so it does not pull up the paint or ruin the finish

[@randyman8984]

I would imagine using a heat gun or if that's too much just a hair dryer. I removed a lot of stickers in the past off of other material real easily this way .

[@mrhasfun]

​@@randyman8984the instructions on my kit say the tape can be removed by heating

[@ZachBoyce]

Had this on several windows and the tape left a sticky residue when removing if from the trim. I also didn't find much of a significant different in temperature with it on. The drafts just moved from coming in through the window to coming in through the cracks in the trim. I suggest putting weather sealing gaskets on the window sash's if they're letting in air and duct seal compound in the sash channels - which in my house get very cold.

[@tonyeze7233]

Wow.. great video. Finally, the only window sealing that makes sense for a newbie! Thanks

[@DawnBarb]

Hey hey from Iowaaaay! We have draft not from the window but around the outside of the frame. I do what you’re not supposed to, tape the wall outside the frame and put up the plastic completely covering the entire window. . I DON’T heat shrink because I gently remove the plastic and roll off the tape so that I can use the plastic multiple years before replacing

[@SleepyKittens]

There is suppose to be caulk to eliminate the seam between window and wall. Both inside and on the outside between window and outside wall. The exterior caulk needs replacing every few years if it is worn/cracked.

[@DawnBarb]

Yup, unfortunately, we haven’t. I told the spouse when the weather is nicer we WILL get that done!

[@jamessotherden5909]

Some thermal backed curtains will also help.

[@srobeck77]

I think its just time to get some quality double pained windows at that point.

[@gl15col]

If your window trim is MDF, for the love of dog be super careful removing it. I'd never owned a house with MDF trim before, and it made a mess I'm not sure how to fix. The plastic window insulation kits work great, but remove slowly until you see how trim is reacting.

[@jamessotherden5909]

I have molding that I do not put tape on anymore. When removing the tape the cheap finish came off to.

[@ncooty]

Sounds like an issue with the priming and paint rather than the substrate. No?

[@rossa7215]

I love your channel and applaud the degree of professionalism you bring to every project. This one, I have to say, surprised me to see. It sounds fine, and the plastic will definitely help cut down heat/cold transfer, but oh man will there be a problem pulling that off again. Rare to see paint jobs that are well enough done to allow the tape to be pulled back off with taking the paint too. Get some 24 month no cost financing from a window company you trust, and have new windows installed. I know, that isn’t the DIY way your channel is focused on. In this case I would not go DIY for the reason given. Sorry😕

[@budgetaudiophilelife-long5461]

THX SCOTT🤗 GREAT 💡,WE DID IT FOR MANY YEARS,YEARS AGO AND GAINED COMFORT 🤗AND SAVED MONEY 💴💚💚💚

[@feuby8480]

I did it. I dont' know if that was usefull, but that definitly helped a bit. I like the idea of having frames insert to be able to remove it, that's honnestly the worst part I found to this method : windows are sometime hard to put on, and the double sided tape may remove some of the old pain or let sticky things. Frame inserts looks like the idea of the century.

[@SujayNarsale]

Tip from using these for 2 years: Keep the back cover of the tape on and only remove as you're going down. If the plastic down below sticks to a tape before you have the top lined up, it's going to have a massive crease or will rip off. The plastic sheet is really thin.

[@EverydayHomeRepairs]

Thanks for the feedback Sujay.

[@rodgergarvie327]

I've used this product, works well. My problem is when I remove the plastic in spring what washes the sticky tape off the surface of the window frame? I've tried glue be gone but nothing works but scrubbing for hours?

[@LFTRnow]

I came here for this comment. I agree. Double-sided tape (and "nano tape") can be a nightmare to remove. I also would never have peeled off ALL the backing before attaching the plastic. That just sounds like frustration waiting to happen.

[@BobbieJeanM]

The one time I used this, I had the same problem and haven’t used it since. I have room darkening curtains and just keep them closed when it’s really cold which means below freezing for me. That’s just for the windows that are on the N/NW side and don’t get direct sun. The other windows I leave the curtains open until a half hour or so before sundown because the sun coming in produces enough warmth that the heater doesn’t come on…unless it’s in the 20’s or lower during the day. 🥶

[@macfady2181]

I apply it to the outermost part of the vinyl (🤷‍♂️), the tape is easier to remove and you can still use the blinds.

[@keith2498]

What concerns me is the double sided tape. What's the cost of the product and how hard is it to remove double sided tape. We don't have trim all the way around our windows. Not sure who does now days.

[@EverydayHomeRepairs]

The biggest issue I have seen over the years is trying to remove the tape completely without removing the paint 😬

[@ShawnJones]

It almost always works very well, but as said, the double sided tape is really hard to remove easily and without damaging the paint.

[@keith2498]

Then I am not a fan of the product. Need a better method. Would even be worth a heavier material with grommets or Velcro

[@ascienceguy-5109]

Flir Cameras are great, but combining that with a blower door test is an excellent way to find sites of air intrusion. Try that Scott, and show your results.

[@modelno2004]

We are using this exact window cover this year for the first time on our ground level (the coldest space). In a 3-level home, we have noticed a slight temperature difference. Waiting to see the gas bill next month to compare!

[@thespencerowen]

Tip: Don't remove all the backing too early. Instead just pull down 1 inch off each corner and get the plastic mostly in place. Then pull the tape backing off. This prevents accidentally touching the tape and ruining the plastic.

[@thespencerowen]

I just did this to my house. I wasn't expecting much, but the change was dramatic.

[@Brodmann312]

The previous owners of our home had used these kits and struggled to get the tape and residue removed. By the time it was my problem, I resorted to sanding it off the window trim with a diamond sanding pad. Anyone attempting to remove these should probably try a hair dryer or heat gun held at a distance and have a plastic scraper ready. For what it's worth, I caulked around the windows and trim prior to painting, replaced the bottom seals, and it eliminated the draft they were attempting to prevent.

[@jonp761]

Love this stuff. Being using it on my windows for years now. Makes a big difference. Though I've found that the type will ruin colored PVC trim. No issues with the white or painted wood... just the colored PVC stuff.

[@ThePudgie123]

They are great!!! ...needed to use them on a bathroom glass block window.

[@rogers5927]

I always use the 3m kit it works real good done it for 40 + years

[@EverydayHomeRepairs]

Nice, thanks for the feedback!

[@erickmcgraw]

I used the 3M brand a couple years ago and had a terrible amount of condensation build up. The 3M rep said you have to have a very dry/low humidity in the room before installing this. I ripped it out ran a dehumidifier over night and tried again. With the temperature outside changing constantly, I still got a couple condensation patches but not as bad.

[@EverydayHomeRepairs]

Thanks for the feedback 👍

[@southerncomfort971]

I have used these and the things people should know is the film is easily torn and that it is a single season use only, they are not re useable for the next season unless you never remove them. I used them for 2 season before I was able to replace the windows in my home. We did find it to be very effective for the two seasons, although removing the tape was difficult and sometimes removed the paint.

[@EverydayHomeRepairs]

That is a great use case. Use it until you can afford to fix or replace the windows. 👍

[@leadbird3666]

Infrared is not recommended to measure temperature on glass, since it reflects back some IR.

[@demontekdigital1704]

We got 2 packs of this stuff for the bedroom when we lived in a mobile home that we'd freeze in. We never got around to using it, and eventually we ended up moving. We still have it brand new in storage, lol.

[@joellenbroetzmann9053]

I kind of like the pkexiglass insider storm windows better. When we lived in AL, the previous homeowner out them in. I think they were mfd. In LA. They required a 1" wood strip all around the window that became a place to attach a magnetic strip all around the window. Double hung window insiders were in 2 pieces and could be stacked so the window could still be opened. The windows had an edge that covered the edge of the plexiglass and a couple small handles making it possible to grab and pull them out easily. Those are permanent and can be left up all year but one can pull out, reach in and adjust any blinds and shades as desired. They insulate better than thin plastic, and make a huge difference in outdoor sound not being heard inside too. Much cheaper than window replacement!

[@avalon449]

So how do you open and close the blinds???

[@Nevetsmo]

Better have some automated shades

[@tretre1692]

You don’t, that way no one sees the junky plastic lol

[@marvinjenkins4901]

What I did was have the blink stick stick out an an angle on the side. That way all I have to do is twist the stick to open and close the blinds. Works out great.

[@mtslyh]

I wonder how this would compare to using thermal drapes? I wouldn't want thermal drapes in every room of the house but in rooms you rarely use, thermal drapes would be much easier to work with. Anything that supplies an insulating barrier would make some difference.

[@strangerland9791]

Should attach using velcro strips. Just take off the velcro to open windows if needed, re-attach it using velcro after closing window.

[@projectswithjw]

I wish they made a larger piece of plastic. I've recently discovered a leaky double door 6' wide by 80" tall. Waiting for warmer weather for proper fix but it would be nice to have a bandaid until then.

[@srobeck77]

This definitely helps with single pain windows, especially will older warped wood frames. But I'd be skeptical of the effectiveness with newer double pains that have argon insulating gas inbetween the glass.

[@EverydayHomeRepairs]

I would agree with that 👍

[@lagautmd]

I used that one year, many years back. It definitely worked. But, as folks have noted, it is finicky. The double-sided tape is tough to remove. People tend to have furniture in front of the windows, move it or try to work around it. The problems of it has always made me less than motivated to use it again.

[@brothermine2292]

How about first replacing the blinds with a motorized version, controlled with a remote?

[@AndrewLakebrink-cz2vl]

Not having access to the blinds would be a nonstarter in my home. I use weather sealing tape from 3M, I don't think it was frost king. It goes over the middle area where the two panels meet, and you could go around the perimeter of each window too. Probably not as good as a full window cover, but it does something.

[@Plissken68]

Great video as always. Can you tell me where you got that door? I'd love to get one just like it.

[@garypic4083]

Get some plastic drop cloths cut to size, double tape

[@GeekRedux]

I tried this a couple of years and didn't really notice a huge difference in either the way my house felt or in my utility bill. And removing it in the spring either left a sticky residue from the tape or the tape took paint with it. Wasn't a great choice for me.

[@robwloch8733]

Would you use this on a natural gas fireplace that isn’t used? I think I have a lot of heat loss on mine.

[@paulandonie6210]

Are there any alternate options that let you still have access to your blinds? Or can this film be placed directly on the windows?

[@BackyardMaine]

Great video Scott. Who doesn't want to save money on their heating bill.

[@EverydayHomeRepairs]

I should have done this last week when we were hitting negative temps for highs 😂

[@nikki6252]

Can you still do this with windows that have the cranks? Or will the cranks poke a hole?

[@shubinternet]

So, I want an insulation layer that goes under the blinds, so that I can keep using the blinds even though the insulation layer is in place. I saw a good video where a guy uses a sheet of Lexan (or plexiglass) that fits into a metal frame, and the metal frame is attached to the window frame with magnets -- so it's removable.

[@alonso9248]

Y cómo abres la ventana ? How do you open the window then?

[@NightBallIron]

Good video, but it was the door video that got me excited

[@Silverdragon517]

If you keep blinds closed, does the heat still lose at the same rate.

[@nashvilleb8574]

Could this work on an attic door?

[@ThePatrickAAnderson]

Any issues with condensation on the window behind the plastic? I have newer windows, but they are large so there is a lot of surface area for the cold. I've thought about putting up plastic but I am worried of trapping moisture in the air between.

[@DavidBugea]

Do you have a link for the thermal camera on your phone? Enjoy your videos!

[@CoralMan24]

how do you remove the double sided tape off the trim the easiest way?

[@shellanderson1232]

Use the duck max strength heavy duty window insulation kit it works much better

[@An_Ordinary_Joe]

As someone who lives in a 130-year-old house, which is balloon frame build, with 10 foot ceilings on the first floor and 9 foot ceilings on the second… I have quite a history on the overall benefit of this type of barrier. I probably used more than 100 of these kits on a total of thirty-seven windows for more than 10 years and eventually decided that the money would be better spent saving up to put in better windows! First off let me say that the only justifiable reason to use this process, is to increase the comfort in the rooms that are drafty because of severe air penetration. As far as being an economical solution (to reduce heating cost) to a drafty house, the benefits are extremely ambiguous! The money you save on heating just turns into money spent on the kits you need to seal up the windows. Even if you keep the barrier up year-round, it only lasts for a couple of years on any windows with sun exposure, because the ultraviolet light and heat from the sun deteriorate the film such that by the 3rd year it becomes brittle and tears, making it useless! Even in the rooms where the sun exposure doesn’t deteriorate the film, static electricity on that film begins to attract dust in the air and clouds your ability to even see through the film itself eventually. I am not totally against people trying the product on a limited basis, but overall… by the time you consider the total cost and the time it takes to install the kits properly on the windows, many people are going to find that it isn’t as good of a solution as it might look at a glance.

[@EverydayHomeRepairs]

Thanks for the feedback from your years of experience. I am surprised you didn't see the benefit of the insulation kit pull through on your heating cost 🤔.

[@billstevens5277]

That's terrible, not being able to open the blinds.

[@davidwatson4510]

I've searched for similar product that would fit on the glass only. But can't find anything. I can't lose the ability to open sliding glass door and some windows. Will have to use insulated drapes.

[@govinda102000]

Although it's not as effective but I would line my removable outside screens with plastic and it keeps wind away from the windows.

[@TheStuppets]

Have used similar in the past and it works great with one exception. If you have cats, they will shred this stuff like coleslaw in about a day. 😉

[@Lostcity178_b]

I put plastic in first then I put the blinds in so that I can open and close them

[@EverydayHomeRepairs]

Yeah, if you have outside mount blinds you can still use them which is a bonus 👍

[@donovanw.2943]

Thanks for the helpful info.

[@thegrimmperspective]

Is the double-sided table easily removable? Any residue or evidence of it being there?

[@EverydayHomeRepairs]

Well, that can be a bit of an issue. I had luck in the past using a bit of heat and lightly scraping off the tape. If you just start ripping the tape off you can definitely cause some damage to the paint and might have to repaint the trim.

[@mkarias11]

I always thought this went directly on the window/glass. You can't use the blinds in this example.

[@acasyoung]

so, it means you cannot open the blinder during the winter!

[@linorics]

Hu… interesting this reminds me of how us in the dessert put up tin foil in the windows in the summer to block the heat.

[@srobeck77]

Haha omg yes. Tin foil or cardboard in every window. It works, the sun rays are no joke in 110-125'F heat

[@lyndastockton2626]

How can you open the blinds???

[@EverydayHomeRepairs]

If you have inside mount like this there is no ability to adjust.

[@srobeck77]

jedi mind trick works for me

[@dalemseitzer]

The way you did it, the blinds are not adjustable. Please the plastic between the blinds and the window and you can still use the blinds

[@hassanbazzi3545]

Neat product

[@tedlahm5740]

Keeps WIND from blowing into/past the loose fitting window?

[@gl15col]

It absolutely will. You can put tape on paint outside of window if necessary, just remove with a blow dryer to loosen the tape and go slow.

[@bryan9154]

Does the tape rip off the paint?

[@BlueGillage]

The possibility is there.

[@cblanton42]

Duh, You measured the window temperature the first time with the shades up and the second time with the shades down... Of course it will be a few degrees warmer!!! A better solution would be insulated curtains which also allow you to open the blinds on a sunny day.

[@Avocado740]

nice

[@The_Cyberz]

Close enough with cellular blinds

[@gregpochet4812]

i have used this on my fireplaces that we do not use

[@srobeck77]

That must look real lovely. Why dont you just shove a blanket up it?

[@gregpochet4812]

@@srobeck77 its clear plastic. same look as on a window

[@srobeck77]

@@gregpochet4812 yes im aware and the point stands, its looks like trash over a fireplace. So whats your point here, fella?

[@xlxchiefxlx]

This may open up the opportunity for me to get roasted in the comments but I like putting black plastic over certain windows in my home because the black absorbs heat. Before the windows were around 55-65 degrees but after putting black plastic they ended up being 115-125 degrees. Not very good for letting natural light in but I use clear on the windows that I want to let light into

[@bones987123]

that tape f@$?! everything up it either rips of paint or leaves residue and theres a dirty dusty ring around your window

[@BrownR87]

Every time I think "maybe I'll try using that window film stuff again", the following spring I curse my life choices as the tape either leaves a bunch of residue behind, or rips off half the paint on the trim.

[@TheSwissGabber]

unfair comparison if you shoul the blinds in one test and not the other. also when using an IR cam thermal emissivity has to be considered.

[@RiteOn]

ISP alcohol breaks down paint

[@srobeck77]

prolly the alcohol is only for vinyl windows. otherwise heat gun

[@wildtom20031]

We have used this many times. Then we got 2 cats and they just tear it up. LOL

[@robertarguello1115]

For sure! … If that plastic stays put and remains taught throughout the entire ❄️ winter season, for a project that took less than an hour to accomplish and that doesn’t ruin the look of a ✨beautiful window, it’s a great choice. Thanks for sharing it!

[@Vuweatherman25]

My aunt and uncle had that growing up. They used a wood frame built to fit tightly inside the window to attach it. As to why i dont. Couple reasons. My house was built with high end energy efficient windows. The previous owner really picked well. Ive had them inspected and they are still working great. Also i have geothermal heat which is already drastically cheaper then any alternative. And finally, i have way too many windows to spend that kind of time lol it would take forever. Plus my house is VERY well insulated.

[@EverydayHomeRepairs]

Nice! Sounds like you are set 👍

[@SuperLuckao]

Plastic is carcogenic. Im too scared to use it

[@jimbo5728]

And.... now your blinds are closed forever 😂😂😂

[@EverydayHomeRepairs]

Yep, if yours are inside mount you need to pick a setting and like it 🙂

[@wolfpacva]

Or buy better dual pane windows with argon gas .

[@gregmize01]

lol

[@dadaustin4570]

I don’t do this because we have 22 big windows. Maybe the upper level will be a project for next yr

[@srobeck77]

thats more of a reason to do it. cant imgaine your heat bill

[@fk2812]

Does this look tacky when people come over? 😢💩

[@jimjr9143]

I personally would never do this . No airflow at all between the window and the film . Condensate will form over time with no way to clear it up . A micro thin piece of plastic has 0 insulation value . Only use for this is an old house with drafts coming in through the window during winter . Right after the real cold part of winter though it has to be removed right away and a thorough job cleaning the window . I live in Florida and the best thing to do is install (outside) window shades to block the uv rays from even reaching the window . Also over time this will mess up the paint .

[@NeverHaveKids]

Respectfully, this analysis is flawed. I've used window film in the winter in a northern state. The difference it makes is *enormous*. If you put the film on the outside of the frame, seal it tight with the tape, and tighten it with a hair dryer, it forms a nice tight bond, and no air or drafts escape into your home. You can feel the difference when you put your hand up against a plastic-sealed window -- any microdrafts are absolutely gone. And you also cannot feel the cold being allowed through the glass. Finally, after a single evening, you can tell a room with plastic-sealed windows is noticeably warmer. Also, you have a contradiction which explains the fatal flaw in your statement. You say, "No airflow at all between the window and the film." You also say, "A micro thin piece of plastic has 0 insulation value." Wrong. When you tightly seal with the thin plastic, it is true, there is almost no airflow. That is *exactly* what you want, because that lack of airflow you identify forms an "air barrier" over the window pane and around the frame. This prevents air near and outside the window from mixing with interior air. And this air barrier is incredibly effective at keeping the heat in, and the cold out. It's similar to how stores have a vestibule and two sets of doors before you enter the interior of the store -- that vestibule prevents inside air and outside air mixing every time the outside door is opened -- saving the business a fortune in heating and cooling bills. I say again -- the plastic film is incredibly effective at sealing windows and keeping the heat in. Cheap, it works, and far more effective than spending tens of thousands on "double" or "triple" pane windows that do no better than this film.

[@jimjr9143]

@@NeverHaveKids not flawed in the least . I tried this very thing and had to take it off . To funny anyone thinking there is any insulation value in a micro thin piece of plastic . Condensation will end up forming inside the plastic as well .

[@NeverHaveKids]

@@jimjr9143 Incorrect. The insulation is created by the pocket of air between the plastic and the window. Just like big stores and hotels use vestibules and air curtains to prevent inside air and outside air from mixing. Ever seen a greenhouse? Very thin plastic, yet provides superb insulation for plants. End of discussion.