Insulation in Boilers

Insulation in Boiler system is a critical piece of equipment.  It is factor which has a direct relationship with efficiency and cost.  Heat Energy is produced in the boiler.  This energy is transferred using steam as a medium throughout the system.


Poor or damaged insulation can also result in condensate formation which can cause problems such as hammering.

The Insulation in Boiler systems has three main functions

  • To prevent heat leakage from the boiler and the system
  • To protect personnel from accidental contact with hot surfaces.
  • To ensure a tolerable working temperature in the boiler room and surrounding for the operating personnel

There are many different materials used for Boiler Insulation. Glass Wool is a common material. Other insulation Materials are Styrofoam, fibreglass and polystyrene.