Types of Insulation
There’s a variety of insulation products to choose from and we have provided an overview below:
Glasswool is made using recycled glass bottles and is the most popular thermal insulation product in Australia and around the world. It provides both thermal and acoustic performance and can be used in a number of applications, including external walls, under floors, mid-floors, internal walls and ceilings. It can withstand temperatures up to 230°C. Glasswool can be compression packed, which means more area can be insulated per pack compared to other insulation products. It is the most cost-effective and sustainable insulation product available.
For more information on where glasswool insulation can be used when upgrading your home click here.
In Australia glasswool insulation is available in both batt and roll form for ease of installation. Blow-in glasswool insulation is also available to fill cavity walls and hard to reach areas.
Rock mineral wool
Rock mineral wool is made mainly from volcanic rock, typically basalt and/or dolomite. It is commonly used in high temperature and industrial applications as it can withstand temperatures up to 850°C.
Foam insulation such as XPS (Extruded Polystyrene) has high compressive strength and is water resistant. It is the ideal insulation for applications where there will be high weight load bearings such as green roofs and under concrete slabs. Foam insulation also provides high thermal performance and high impact resistance. For more information on foam insulation click here.
Pure sheep’s wool insulation is not common. Most sheep’s wool insulation products contain a blend of polyester and old sheep’s wool from carpet and yarn suppliers. Sheep’s wool insulation products can be expensive due to high cost of production resulting from the low volumes produced. It is available as a loose fill or an insulation mat.
Polyester insulation is made from polyester fibres, which are melted and bonded together. Most polyester insulation products are manufactured using high percentages of raw (virgin) materials. These raw materials are petro-chemical based (plastics). This ensures that the product can recover to the thickness stated on the product packaging. Polyester products have much lower levels of compression and recovery, which means less product per pack and higher transport costs compared to glasswool that has been compression packed.