Rock Wool

Description
Very similar to fiberglass, rock wool or mineral wool is made from slag, the remains of the steel making process.

Pros

  • Handles heat very well.
  • Used as a fire-stop in commercial buildings.
  • Good sound absorption, the best by a small margin.
  • High recycled content.

Cons

  • Itchy.
  • Somewhat hard to find.
  • Rare in blowing wool form.
  • Does not prevent radiant heat transfer – the primary source of heat-flow in and out of buildings.

Quicklinks:

Cellulose
ThermoFoam
Fiberglass
Radiant Barrier
Rock Wool
Air Krete
Open Cell Foam
Closed Cell Foam