Any solid material can be a heat “conductor.” Metals are good at conducting heat, similar to how they conduct electricity. To stop heat transfer, we need an insulator. The best insulator is a vacuum — ...

This is because good electrical conductors are usually good heat conductors too ... their performance as an ultrathin thermal insulator could be their most promising trait for future applications ...

Metals are good conductors of heat energy. Non-metals and gases are usually poor conductors. Poor conductors of heat are called insulators. The atoms of a solid are held together by chemical bonds.

When it comes to home comfort and energy savings, insulation plays a more significant role than most people realize.