Hand Sealing vs Aeroseal: Compare the Difference Aeroseal: The More Profitable Way to Seal Ducts 90%+ reduced duct leakage 30% less man hours needed 4.5% increased bottomline Click on the image to enlarge a fact sheet comparing mastic and Aeroseal in both retrofit and new construction applications. Want to learn more? Call: 877-349-3828 Email info@aeroseal.com