We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Today’s building codes require a minimum amount of insulation in walls and ...

Insulating your attic walls ... insulation as long as the old insulation material is in good condition and not compressed. Mixing types, like adding fiberglass batts over loose-fill insulation or ...

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 ...

Air Gaps and Energy Efficiency: Adding a blow-in insulation over pre-existing insulation can help fill gaps, enhance the air barrier, and improve thermal performance, provided the fiberglass layer ...