ProBlock Premium All-Purpose Water-Based Interior/Exterior Primer

Description

Ensure a professional, long-lasting paint finish across any interior or exterior project with Sherwin-Williams ProBlock Premium All-Purpose Water-Based Interior/Exterior Primer. This high-performance acrylic latex undercoat is engineered to deliver dependable multi-surface adhesion and excellent stain-blocking capabilities while maintaining a user-friendly, low-odor, and low-VOC water-based profile. Formulated with topcoat holdout resins, it seals porous architectural substrates like fresh drywall, wood trim, cured masonry, plaster, and stucco to prevent uneven topcoat absorption and uneven sheens. It provides reliable resistance against mild bleeding stains, including light water marks, ink, grease, and wood tannins. It flows smoothly off brushes, rollers, or spray equipment, creating a high-grip foundation layer that ensures your premium latex or acrylic topcoats anchor tightly without peeling or blistering over time.