What are good insulators?

What are good insulators?

Answers
Wood, glass, ceramics
lee
26 April 2011
A vacuum flask is very good at keeping drinks warm.
jon.ellis
27 April 2011
People use cavity wall insulation to keep their houses warm. They use mineral wool, beads or granules and foam.
jon.ellis
27 April 2011
They also insulate their roof spaces using mineral fibre rolls of insulation fitted between the spacings of the attic or floor joists.
jon.ellis
27 April 2011
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