In France they put something called Blanc de Meudon on windows which I’ve heard is good too. Will be trying it next time. It’s basically powdered chalk mixed with water.
Wow, I might try this next time. It washes of in rain though, right? I’ve seen people tape thermal blankets (aluminum on plastic foil) to their Windows.
You can also use yoghurt - exactly the same principle, it’s basically “casein paint”. Hanging blankets on the outside of the window also cuts heat transfer through the window by ~90%.
Thank you
In France they put something called Blanc de Meudon on windows which I’ve heard is good too. Will be trying it next time. It’s basically powdered chalk mixed with water.
Wow, I might try this next time. It washes of in rain though, right? I’ve seen people tape thermal blankets (aluminum on plastic foil) to their Windows.
You can also use yoghurt - exactly the same principle, it’s basically “casein paint”. Hanging blankets on the outside of the window also cuts heat transfer through the window by ~90%.
https://www.instructables.com/Milky-window-makeshift-curtains/