Fibreglass Insulation

As its name would suggest, this bunch of hair-like sized fibres is made of the same material used in the manufacturing of glass: silica (the main constituent of sand). When silica is melted and extruded through a narrow nozzle, it then solidifies to form a very thin fibre. Fibreglass insulation is formed by cementing many of these fibres together, creating a texture that feels very similar to wool. Given its structure, this material is a very efficient thermal insulator, since it traps air in-between its fibres. It is mainly used for insulating wall cavities and for roofs and ceilings. Fibreglass can also be used for soundproof insulation as the sound waves get absorbed into the material cavities and slowly lose their initial energy as they interact with the fibres.