How to Apply CertaSeal INT Sealant CertaSeal INT™ Sealant CertaSeal INT™ from CertainTeed is a spray-applied, water-based acrylic latex sealant that is quick and easy to install and requires minimal personal protection equipment. Play Close Related Content Residential Roofing Residential Roofing Building Insulation Drywall Custom Lakeside Home Delivers Lasting Luxury and Proven Performance Stunning Lake Michigan Home Shows the Potential of Panelized Construction Learn More Residential Roofing Building Insulation Drywall Custom Lakeside Home Delivers Lasting Luxury and Proven Performance Residential Roofing Building Insulation Drywall Weathertight in Six Days: New Hampshire Weather is No Match for High-Efficiency Panelized Home Residential Roofing Building Insulation Drywall Precision Proves Performance: Mystic Home Showcases the Future of Residential Building Residential Roofing Solar Building Insulation Home Energy Efficiency Building Insulation Sound Control Insulation