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Solar Power For House

Alma Said:

What is a good insulator for a passively solar powered house?

We Answered:

Dirt. My grandfathers house has 3 to 6 feet of dirt on it and it never gets below freezing when he goes to florida in the winter even without any heat on.
Most dumps have areas where refrigerators are set aside for special disposal. They contain a bit of insulation I'm pretty sure any place wouldn't mind you taking for free.

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