Second window for toilet on rented apartment

heatwindows

I rented my apartment in the summer, now with the cold weather starting (Australia). I noticed how cold the toilet window makes the apartment, there is zero isolation, and is basically a window with separated glasses to the outside (second floor).

I want to install a second window that fits on the whole frame for the old window, maybe with just a frame and plexiglass or glass.

So my question is, how to make this isolation window so is easy, cheap. That I can install and uninstall (when the summer comes again).

Is there a preferred solution for this case?

Thanks in advance.

Best Answer

Window insulation film.

window insulation film

https://www.youtube.com/watch?v=gwkmgbzGG-g

This window kit is clear plastic sheeting. You attach it with double sticky tape along all edges. When I did this the last step was to blow hot air on it with a hair dryer which got rid of wrinkles. 3M makes a kit. The plastic must be something like shrink wrap but I dont know if that is essential.

In my old drafty 1930s house I made adhoc extra windows with sheets of plexiglass that I cut to fit the windows. I used foam pipe insulation along the edges and pushed them into place. They worked great but the windows were big and the plexiglas was pretty expensive. I toted those pieces around for some years after moving hoping to find other uses for them.

If I were going to do that stuff again with maximum cheapness I would skip the kit ($$$) get a piece of clear plastic sheet (¢¢¢) and put it up with double sticky tape. Then in spring carefully fold up the plastic for next year.