Learn More › Today’s building codes require a minimum amount of insulation in walls and attics, but older homes were often under-insulated, so the answer for some homeowners may be blown-in ...

For attic walls, the recommended R-value varies based ... Mixing types, like adding fiberglass batts over loose-fill insulation or blown-in cellulose, is also fine. Emily Fazio has energized ...

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 ...