Whilst assisting to reduce energy consumption and carbon emissions of a building, thermal insulation and pre-insulated panels can impact on climate change and ozone depletion if they are not manufactured in a responsible way.
CFCs, HFCs, HCFCs & PIR Insulation
Blowing agents are typically used to enhance the thermal performance of PIR insulation, by filling the cells within the insulation with a low thermal conductivity gas. This gas can be released into the atmosphere through various channels, such as during the manufacture of the product, during transit or after the product is ceased to be used.
Blowing agents used in the manufacture of PIR insulation products, such as CFCs HCFCs and HFCs, can accelerate climate change and ozone depletion if they are released into the atmosphere.
A blowing agents’ impact on ozone depletion and climate change is characterised by its Ozone Depletion Potential (ODP) or Global Warming Potential (GWP).
What is Ozone Depletion Potential (ODP)?
CFCs, HCFCs and other substances released into the atmosphere can react with the ozone layer in a negative way. A molecule of chlorine can react with the ozone and catalyse the conversion of ozone molecules into oxygen. One chlorine atom has the potential to destroy more than 100,000 ozone molecules! This is the process of ozone depletion and has already caused a substantial amount of damage to the ozone layer.