THE ANSWER
Yes. Emergency management agencies specifically recommend using “aluminum foil-covered cardboard” between windows and drapes to reflect heat back outside.
WHAT WE FOUND
The Federal Emergency Management Agency (FEMA) published a June 29 blog post that included the aluminum foil tactic among six ways to combat extreme heat.
“You can keep your house cooler by insulating it and covering your windows with drapes or shades,” FEMA said in the post. “Use window reflectors such as aluminum foil-covered cardboard to reflect heat back outside.”
Local emergency management agencies echo that. Georgia Emergency Management recommends installing “temporary window reflectors” such as aluminum foil-covered cardboard between windows and drapes before extreme heat arrives. Washington Emergency Management tweeted June 22 that residents could prepare for the upcoming heat wave by installing aluminum foil-covered cardboard at their windows. Both say doing so reflects the hea
Aluminum foil over windows can keep homes cool in heat wave
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Aluminum foil over windows can keep homes cool in heat wave
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Aluminum foil over windows can keep homes cool in heat wave
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