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 How to Hire a Contractor - Proposals, Contracts & Payment Before you seal the deal, learn these tips to find you the best contractor for your project! Learn More Residential Roofing How to Hire a Contractor - Proposals, Contracts & Payment Residential Roofing How to Hire a Contractor Residential Roofing Siding Introducing 2024 U.S. Industry Trend Report Residential Roofing CertainTeed NailTrak® for Fast, Accurate, and Visible Installation Residential Roofing Ice Storms