What happens if insulation is compressed during installation?

When insulation is compressed during installation, its ability to resist heat transfer, known as thermal resistance, is negatively affected. This is because insulation materials, like fiberglass or foam, are designed to trap air pockets, which provide their insulating properties. When these materials are compressed, the air pockets are reduced or eliminated, leading to a decrease in thermal resistance.

This change results in less effective insulation, meaning that heat can flow more readily through the material. Consequently, the building or system being insulated may experience higher energy costs and reduced comfort levels, as the insulation will not perform as intended.

Understanding this principle is crucial for insulation installers, as proper installation practices are key to achieving optimal energy efficiency and temperature control in buildings.