What effect does compressing insulation into the eaves area have?

Compressing insulation into the eaves area diminishes its R-value. R-value is a measure of thermal resistance, indicating how well insulation can resist heat flow. When insulation is compressed, its material is compacted, reducing the amount of air trapped within it. This trapped air is crucial for providing insulation; when it is diminished due to compression, the insulation becomes less effective at resisting heat transfer.

It is essential to maintain the thickness and loft of insulation to ensure it performs at its intended R-value. Therefore, compressing insulation in areas like the eaves, where space may be limited, compromises its ability to insulate effectively, leading to potential energy loss within the building structure.