How to Apply CertaSeal INT Sealant CertaSeal INTâ„¢ Sealant CertaSeal INTâ„¢ 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 Building Insulation Vapor Barriers A Key Component in Moisture Management Strategies A building without an effective moisture management strategy is a recipe for trouble, as inadequate Learn More Building Insulation Vapor Barriers Building Insulation Protecting the Building Envelope from Water Damage Building Insulation Hybrid Insulation Systems Provide High-Performance, Cost-Effective Blend of Air, Thermal and Moisture Control Building Insulation Soundproofing with Fiberglass Building Insulation Sound Control Insulation