Why is fibreglass a good substance to lay between the rafters of loft?

Fiberglass is an Excellent insulation material for lofts because it effectively reduces heat transfer, helping to maintain a comfortable indoor temperature and lower energy bills. Its lightweight nature makes it easy to handle and install between rafters. Additionally, fiberglass is non-combustible and resistant to moisture, which helps prevent mold growth and enhances the overall durability of the insulation. Overall, its thermal efficiency and longevity make it a popular choice for loft insulation.