We have plenty down at the center, so many, you can carpet a garden. So, since I'll have to tear down the roof and improve the insulation in a few months, I was thinking of adding one extra layer... of emergency blankets. Since they can reflect the sun's heat up, and the heat under it down, will they do that for a whole house? Will the plastic film cause water condensation? If you wouldn't recommend it, then what would you recommend?
They may help, but as thin as they are, installing them would be about as easy as putting socks on a rooster!