We had foil put on our windows last week what a huge difference in Light and heat .
During the day people can not see in at Night with all the lights on they can see in but not well .
We have a bird feeder 8 inches from the glass neat to see the birds up close .
I came home the house was warm and I took some pictures to show the difference 30 minutes makes .
temp out side 93°F
temp inside No air on 80°F
I put two pieces of rug one behind Kitchen window with Foil
One behind patio door no foil .
We did not do the patio door because it has venioation Blinds in side the doors and aslo a awning over the doors .
I raised the awning to get a proper comparison .
#6971 Kitchen counter with foil
#6981 Kitchen counter with foil
#6872 patio door no foil
#6980 Patio door no foil
#907 bird behind foil