Evaluating thermal conductivity: material choices for energy efficiency (metrics)

Frequently Asked Questions


Thermal conductivity is crucial as it determines how well a material conducts heat. Lower thermal conductivity materials help to keep buildings cooler by reducing heat transfer from the outside, decreasing the need for air conditioning and saving energy.
Look for the R-value (thermal resistance) or U-value (thermal transmittance) of materials. Higher R-values and lower U-values indicate better insulation properties, meaning the material is more effective at resisting heat flow.
Materials like mineral wool, fiberglass, polystyrene, and certain types of foam insulation have low thermal conductivity. For windows, double or triple glazing with low-E coatings can significantly reduce heat transfer.
Materials with low thermal conductivity reduce the amount of heat entering your home, which means your air conditioning system doesnt have to work as hard. This leads to lower energy consumption and reduced energy bills.
Check with the Building and Construction Authority (BCA) and the National Environment Agency (NEA) for available grants and incentives promoting energy-efficient building materials and sustainable building practices.
Hire certified professionals experienced in installing insulation and other energy-efficient materials. Proper installation is crucial to achieving the advertised thermal performance and preventing issues like moisture buildup.