ProBlock Quick Dry Water-Based Interior/Exterior Primer

Description

Minimize jobsite downtime and accelerate your painting schedules with Sherwin-Williams ProBlock Quick Dry Water-Based Interior/Exterior Primer. This premium-tier architectural undercoat features a rapid-drying acrylic resin formulation that dries to the touch in minutes and allows for topcoating with premium latex or oil-based paints in as little as 30 minutes. Designed for both indoor and outdoor multi-surface projects, it offers exceptional adhesion across multiple substrates including bare drywall, plaster, wood trim, cured masonry, brick, and stucco walls. It seals porous surfaces to guarantee a uniform topcoat sheen holdout, preventing blotchy finishes or “shadowing.” The low-odor, low-VOC formula delivers dependable resistance against everyday stains, making it an excellent choice for fast-turnaround residential renovations, commercial tenant improvements, and multi-room drywall preparation.