Adding blown-in insulation to your attic space is a popular way to improve energy efficiency and reduce heating and cooling costs. But what if you already have fiberglass insulation? Do you need ...

Insulation types with higher R-values offer better performance. For attic walls, the recommended R-value varies based on climate zones. Each type has pros and cons. For example, fiberglass ...

Condition of Existing Insulation: If the fiberglass insulation is in good shape—dry, fluffy, and evenly distributed—it may not need to be removed; however, attic insulation that's compressed ...