Types of Insulation
Glasswool is made from fibres of glass which are arranged using a binder which gives them a texture similar to wool – hence the name. Glasswool can be manufactured as a loose fill material or as batts. Regardless of the form it takes, the process of making this insulation material traps millions of tiny pockets of air between the strands of glass. Because the pockets of air are trapped in this way, there is little to no movement, and thus no heat transfer by way of convection.
Reflective insulation is typically a foil faced pliable building membrane that has one or more highly emittant surfaces deigned to reflect radiant heat. Reflective insulation may also be supplied as a composite whereby the reflective foil laminate is adhered to one or more faces of a substrate (e.g. glasswool, foam etc.) to provide the benefits of both reflective and bulk insulation.
Polyisocyanurate (PIR) insulation
Polyisocyanurate insulation (commonly referred to as PIR) is a thermoset, rigid foam insulation typically faced on one or both sides with a reflective foil laminate. PIR provides exceptional Material R-values at lower thicknesses compared to traditional bulk insulation products. It also delivers excellent fire and moisture absorption properties.
Extruded Polystyrene (XPS) insulation
Extruded Polystyrene insulation (commonly referred to as XPS) is a closed cell foam insulation that is produced by expanding a polystyrene polymer via an extrusion process. XPS provides exceptional compressive strength properties typically reaching values of ≥300kPa.
Expanded Polystyrene (EPS) insulation
Expanded Polystyrene insulation (commonly referred to as EPS) is a closed cell foam insulation that is produced by ‘expanding’ a polystyrene polymer . It is typically supplied in rigid board form and is used in applications where thermal performance is required.
Rockwool is a fibre that is made by spinning or drawing molten minerals, such as ceramics. Rockwool insulation is designed to provide thermal insulation of ceiling and wall cavities. More importantly, it provides high service temperature, a property that is commonly used in buildings to provide adequate fire resistance. Additionally, rockwool is commonly used in industrial applications to wrap pipes, vessels, burners etc.
Polyester insulation, as the name implies, is made from polyester fibres. Polyester fibres are produced from synthetic polymers known as polyethylene terephthalate (PET) – chemical substances found mainly in petroleum.