There Are Half A Dozen Different Types Of Material Used For Insulation.

The types of material include cellulose paper, closed cell foam, open cell foams, made from old blue jeans, fiber glass and rock wool.

In commercial construction you will find several other types of insulation.

This video talks about insulation you could use in your house. Up here where I live Roxol (rock wool) is also common. It is similar to but a little more dense than fiber glass. Has a little better R-value and being more dense has a little better sound value than fiber glass, but it is also a little more expensive.