The Sentinel 821 Moisture Blocking Adhesive Sealer/Primer is a high-performance, low-odor coating designed to create a moisture barrier on substrate surfaces. It is primarily used to reduce moisture vapor emissions and improve the bonding strength of new adhesives for flooring and wall coverings.Key Product DetailsPurpose: Lowers moisture emission from substrates and enhances the effectiveness of adhesives.Common Applications: Ideal for use in basements, garages, and other interior areas where moisture is a concern.Coverage: Typically ranges between 200 400 square feet per gallon, depending on the porosity of the surface.Properties: It is a fast-drying, water-based formula that dries to a translucent finish.Compatible Surfaces: Can be used on concrete, plywood, particle board, wood, vinyl, terrazzo, brick, masonry, stone, ceramic, drywall, plaster, and metal. Key Product DetailsPurpose: Lowers moisture emission from substrates and enhances the effectiveness of adhesives.Common Applications: Ideal for use in basements, garages, and other interior areas where moisture is a concern.Coverage: Typically ranges between 200-400 square feet per gallon, depending on the porosity of the surface.Properties: It is a fast-drying, water-based formula that dries to a translucent finish.Compatible Surfaces: Can be used on concrete, plywood, particle board, wood, vinyl, terrazzo, brick, masonry, stone, ceramic, drywall, plaster, and metal.Application InstructionsPreparation: Ensure the surface is clean, dry, and free of debris. Even a small amount of moisture can affect performance.Application: Use a roller, sprayer, or brush to apply a thin, even coat.Drying: Allow the first coat to dry completely. A second coat may be applied for highly porous substrates.Installation: Wait for the sealer to dry before installing carpet tile, vinyl, or other flooring materials. Alternative and Related ProductsIf you are looking for specific protection types, the Sentinel Products catalog includes other specialized coatings:Sentinel 811: A multi-surface adhesive primer specifically for increasing adhesion on floor and wall coverings.Sentinel 24-7 Zero: A mold and mildew resistant coating that also provides a waterproof barrier.Sentinel 539: A sealer/primer designed for odor encapsulation, often used in restoration projects.