In addition to air sealing, proper levels of insulation are needed. especially in the attic. It might surprise you to know that most homes in the United States are under-insulated based on current DOE standards. How many inches of insulation do you have in your attic? What is the effective R-value (thermal resistance) of that insulation? A certified building energy analyst can help you determine if more insulation is needed.
To learn more about attic insulation and the benefits it can offer, please visit our sister website: SpecialtyComfort.com