1 gal. Block Filler 2X Primer (2-Pack)

Zinsser 1 gal. Block Filler Primer (Case of 2) is a high-build acrylic primer designed for interior and exterior residential, commercial and industrial use. With twice the thickness of other primers, it fills pinholes and seal voids in surfaces providing a smoother and more uniform topcoat. Block Filler 2X high hiding formula seals semi-porous surfaces to provide better topcoat coverage and consistent sheen without pinholing.

• Use on interior and exterior surfaces like concrete, cinderblock, brick, stucco, fiber cement siding, plaster, mortar, concrete masonry units and more to fill and smooth surfaces prior to applying topcoats units
• Covers up to 100 sq. ft. depending on application method and surface porosity
• Flat white finish is a high-hiding formula
• Provides excellent alkali resistance and eliminates concrete salt damage on top coats
• High build formula fills and seals voids in concrete surfaces and features 2X better adhesion and thickness
• Allows for quick project completion: dries to touch in 30 minutes, recoat in 1 hour and apply to new masonry surfaces prior to 30-day cure of concrete
• May be used with most latex or oil based top coats
• Apply using a variety of application methods synthetic bristle brush, roller or airless sprayer
• Strong enough for exterior application, low-VOC formula minimizes odors making it great for indoor use
• Cleans up easily with soap and water while wet