The cost of fiberglass insulation, commonly sold in rolls, varies based on factors such as R-value (thermal resistance), width, length, and whether it is faced or unfaced. R-value measures the insulation’s ability to resist heat flow; higher R-values offer greater insulation. For instance, a roll with an R-13 rating suitable for walls will likely differ in price from a roll with an R-30 rating intended for attics.
Effective insulation plays a crucial role in maintaining energy efficiency within a building. It reduces heat transfer, leading to lower heating and cooling costs. Historically, insulation materials have evolved from natural substances like straw and sawdust to more advanced products like fiberglass and spray foam, reflecting an increased understanding of thermal dynamics and energy conservation.
