Yesterday I told you that I covered two of my windows with aluminum foil in hopes of blocking the sun out and making it a little cooler indoors. Today would be the test to see if it actually does anything.
While the temperature was just a few tenths of a degree lower than yesterday, it is cooling off a lot faster with the air conditioner running. Right now it’s 3:30pm. Yesterday at this time the temperature inside was hovering around 89 degrees. Right now it’s 86 degrees. So it has been a great help because usually it doesn’t get this temperature until well after 5pm.
The aluminum foil was a great deal at 50 cents. It’s probably one of the cheapest ways to beat the heat!

June 6th, 2008 at 1:27 am
Its really good protection from light that covered windows with aluminum foil.I support this.
June 6th, 2008 at 3:36 am
You can buy residential window tint film at your local home depot or lowes.
Much, much better than aluminum foil.
June 6th, 2008 at 9:16 am
It’s funny that I found this post about aluminum foil on the windows. Last night I watched a new show called “Swingtown”. It’s about wife swapping in the ’70s. One of the ‘neighbours’ was putting aluminum foil on her windows…for a completely different reason, wink, wink.
June 9th, 2008 at 12:43 pm
Its really a great deal.I hope It’s one of the cheapest ways to beat the heat in cheap rate.
October 28th, 2008 at 2:28 am
Good idea for blocking the sun rays for entering to your room… aluminum foil… I’m gonna use it then..
April 14th, 2009 at 6:30 am
We had aluminum foil on our bedroom window and we had a visit from the Sheriff yesterday wanting to come in and look for marijuana plants as a “concerned” neighbor had called and reported that we were growing and selling marijuana. This really upset both of us. We are retired and my husband has been very ill for the last 5 or so years. We have never been in trouble with the law. We have always been law abiding and responsible citizens. It gets very hot here in the summer with many days over 100. I guess trying to be a little more comfortable and save a few pennies on the electric bill is causing one “concerned” neighbor to make false accusations about us. I don’t know what to do.
June 11th, 2009 at 5:00 am
I made the mistake of putting the foil on the window with water, when I took it off it left marks all over the window, does anyone know how to get them off?
June 26th, 2009 at 11:24 pm
Bilinda
I have just had the same problem, if you use cerapol, or a ceramic cooktop cleaner on your windows with a soft damp cloth, and wipe off and clean with windex, the marks will come off quite easily.
Good Luck
September 18th, 2009 at 11:40 am
Whenever I see someone with foil on their windows I always get suspicious, lol.
Nah, I understand the insulating values.
Never tried it myself, but it can get really hot here in Australia.. so it might be worth looking into.
Cheers,
-Aidan.
October 30th, 2009 at 6:52 pm
Thanks for sharing
January 13th, 2010 at 6:45 am
I want to put aluminum foil on my windows to make it darker in the bedroom, so I can sleep in the daytime. I just stated third shift at work,and its hard to sleep with it being light in the bedroom. What I need to know is, do I put the shinny side facing in or out. I think I should put the shinny side facing in but I’m not sure. If someone knows could let me know.
January 14th, 2010 at 12:54 pm
I think it’s already been mentioned but your local home depot sells a type of film that is a very light tint that goes over the windows to keep out heat from the sunlight and supposedly keeps heat in during the winter. I don’t have any experience with it so I’m not sure how effective it is for those who’d rather not put aluminum foil on their windows lol
May 7th, 2010 at 3:24 am
Did a drop in 3 degrees really make a difference??? What I can’t understand is should we cover each window in our homes to get the effect??? Because we live in a flat on the last floor and issue is that in winters its too cold and in summers its too hot… I really would like to try it out please do help me out here.. Thanks
May 7th, 2010 at 7:17 am
Great tip of an advice…. We surely try it out
July 28th, 2010 at 10:48 pm
I heard about window tinting and window film but honestly saying I ever never heard about Aluminun Foil on Windows before here really intersting one .
August 2nd, 2010 at 10:30 am
Just tell the Sheriff why you put up the foil and go on with your life. Some people love to make trouble. I can’t believe a law enforcement officer would actually fall for that. Sorry to hear you have some crack pot neighbors.