Attic Insulation Myths and Facts for 2026: A Homeowner Guide
Homeowners often waste money on monthly utilities because of poor attic insulation choices. Many popular beliefs about traditional materials lead to air leaks and high energy costs. Selecting the right material based on current facts ensures a comfortable home and lower bills. Spray foam acts as both a barrier to heat and a seal against air leaks in one step. Traditional fiberglass and cellulose materials allow air to move through the attic. Proper attic upgrades can lower energy expenses by roughly 15 percent according to Energy Star . Common Misconceptions About Attic Insulation Performance Many people think that all insulation works the same way as long as the attic insulation looks full. This idea ignores how air moves through different materials and carries heat out of the living space. Fiberglass Batt Insulation Myth The most common myth is that thick pink fiberglass batts stop all heat loss. While these batts have an R-value, they do not stop air movement. Cold air in the winte...