Description
Production-Grade Pore Sealing for High-Volume Concrete Masonry
Benjamin Moore® Block Filler (M04) is a staple for commercial build-outs, warehouse interiors, and new school construction. Unfilled concrete blocks function like a dense sponge, drinking up paint topcoats unevenly and leaving pinholes that allow moisture to enter. This production-grade filler patches those microscopic voids in one efficient pass, creating an uniform surface that maximizes topcoat coverage.
Best Used For:
• Interior/exterior unpainted porous concrete blocks (CMU) and aggregate fields
• Industrial warehouses, manufacturing bays, parking garages, and utility vaults
• High-volume new commercial constructions, retail shells, and institutional corridors
• Providing an economical filling base under flat, eggshell, or satin wall finishes


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