Fiberglass wool is made from strands of molten glass. The microscopic fibres are strong yet lightweight. Fiberglass wool comes in two types: soft and rigid. Rigid fiberglass wool is best used in acoustic panels, which gives the panel a firmer touch. Its rigidity provides some resistance at these areas, increasing the longevity of these panels. The binders used in rigid fibreglass wool sometimes gives an acrid smell but should outgas in a week.
Benefits of Fiberglass
Fiberglass wool is also commonly used for thermal insulation and shares the same incombustible properties as rockwool. When exposed to heat, it will not emit smoke or toxic products. In the long run, fibreglass is also a good option because it does not retain moisture and will not attract insects.