In this instructable I will show you how to make an INDOOR storm window that will keep plenty of cold out of a room, while letting light continue to come in. My version uses less than $4 worth of supplies, mostly from the DOLLAR TREE store.

THE STORY :)
I moved into an apartment on the 3rd floor. all windows were single pane. The building was built in about 1970, so there was poor insulation, and only single pane sliding glass windows.
It was very cold the first night and the pipes nearly froze in the bathroom. the window rattled and I knew I was in trouble.

By creating my bubble wrap storm window, I was able to raise the temperature in the room 15 degrees F in the first hour. As you can imagine the savings and comfort increased rapidly.

As you can see I do have some depth to the window so making this work was kind of easy. I suppose using clear tape , magnets, velcro etc, you might find another way to put a storm window of this type in place.

Just a new note 4/14 I found that after 2 years of use I needed to strip off the bubble wrap and put fresh on. It was mostly for looks to be cleaner as the bubble wrap still does a great job of keeping tub/shower much warmer.

Step 1: Step 1

In picture 2 you can see I bought clear tape and 1ft by 6ft rolls of bubble wrap from the Dollar Tree, (where everything is actually $1.00). I then found 2 wire coat hangers and unwound them to make a frame for the project.
I first rolled out two 6ft rolls side by side and taped down the middle. I actually bought 3 rolls, more on that later.

Step 2: Step 2

I placed a dark towel under the project so the camera would pick up more details of how I put it together. I formed the wire hangers in an "L" shape and taped them to the bubble wrap. It might be good to mention my window is 2 feet wide and 3 feet tall. This amount of bubble wrap works perfectly with NO WASTE.
I placed opposing wire hangers on both sides of the bubble wrap. when taped in place I folded the other half back over them to give me my 2x3 ft panel.

Step 3: Step 3

I proceeded to tape all the sides and ends with the clear packaging tape. P.S. you may find the tape yellows a bit, its a simple solution so do it over next year !!! :) In picture #6 you can see the semi finished project. the hanger wires give it some support so I dont need tape (which would not stay in place in the shower).

Step 4: Step 4

In pic #7 you will notice two more strips of 2x3 bubble wrap. I had purchased all 3 rolls not remembering the exact measurements of the window. I thought if I needed the 3rd roll to make it longer or wider I would have enough. Turns out I didnt need it for the purpose.

I took the two strips and essentially added a 3rd layer to the storm window. I proceeded to lay the pieces in place LEAVING APROX 5/8" Gap in the middle and then taping them to the existing panel. this not only gives some extra on the outer edges, but also leaves a gap where the center of the tape will adhere to the original window and be some structural support.

After taping the outer edges yet again. I was done! TIME TO TEST IT OUT. See picture #8 notice the density has increased over the last picture.

Step 5: Step 5

I removed all items from the sliding single pane window shelf. The next things was to put the storm window in place. I uses no adhesive. The clothes hanger wire allows for some tension and holds it 95% in place with some tucking here and there.
The following 3 pictures show the insertion and the finished product.

****** This bubble wrap window is the second one I have made. Turns out the last one did have yellow tape and some shampoo bulid up, but it lasted 2 years ****** not bad for nearly FREE!!!

If you have questions feel free to ask.

If you liked this Instructable you might enjoy https://www.instructables.com/id/Weather-Strip-a-window-on-the-cheap/
Here I show you how I weather strip a window for just PENNIES.. I MEAN CHEAP!!!!