Glass Fibre Insulation

insulationThe role of glass fibre insulation in improving energy conservation is well recognised, and it has become the standard means of insulating all types of buildings. A less well-known fact is the amount of recycled glass used in its manufacture.

Manufacturers of glass mineral fibre can replace around 50% of their raw materials with recycled glass, which leads to energy savings in the production process and reduces demand for quarried raw materials. UK manufacturers currently use around 150,000 tonnes of recycled glass (“cullet”) per year. Flat glass is traditionally used, but they have more recently started to use mixed colour container cullet as the production process is relatively insensitive to colour.

This is a positive benefit to cullet producers and provides a ready market that still has room to grow. Although contaminants need to be kept down to pre-defined limits, it is estimated that at least another 20,000 tonnes can be added to that already used.

Main benefits:

  • Energy savings achieved
  • Reduction in emissions
  • Not colour sensitive, makes it easier for cullet producers to supply
  • Users interested in large volumes

Other uses include:

  • Brick
  • Water Filtration
  • Grit Blasting
  • Cement and Concrete
  • Sports Turfs
  • Bituminous Materials