Metallized privacy films have made a big difference in my home. For heat protection, they should be the weather resistant kind and applied to the outside of the window. (They should be removable without leaving any residue)
If you want to try this method out first: Stick a few space blankets in front of the windows. Looks like shit, but it’s a cheap way to test whether this method might work for you.
If you have south or west facing windows:
Metallized privacy films have made a big difference in my home. For heat protection, they should be the weather resistant kind and applied to the outside of the window. (They should be removable without leaving any residue)
If you want to try this method out first: Stick a few space blankets in front of the windows. Looks like shit, but it’s a cheap way to test whether this method might work for you.