Drylok Masonry Crack Filler 10 oz.

Drylok Masonry Crack Filler is a professional-grade, ready-to-use repair solution designed to seal and reinforce hairline cracks in concrete, brick, block and other masonry surfaces. Formulated for both interior and exterior applications, it bonds tightly to substrate walls to prevent water infiltration, resist freeze-thaw cycles and provide a durable, paintable finish. Whether you’re tackling basement leaks, foundation fissures or simple patch repairs around the home, this 10 oz. cartridge delivers long-lasting performance with minimal prep or mixing.

Ideal for DIY enthusiasts and trade professionals alike, Drylok’s advanced water-based formula applies smoothly under standard caulking guns, cures quickly and stands up to weathering and normal structural movement. Its neutral “concrete” hue blends seamlessly under most masonry paints and coatings.

Key Features

• Ready-to-use, no mixing or special tools required
• Excellent adhesion to concrete, brick, block and stone
• Water-based, low odor and easy cleanup with soap and water
• Freeze-thaw and weather resistant for long-term durability
• Paintable within hours of application
• Fills hairline cracks up to 1/8 in. wide

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.