Drylok Masonry Crack Filler UGL 30507 – 10.5 oz (2 Pack)

Overview

Drylok UGL 30507 Masonry Crack Filler is packaged as a two‑pack of 10.5 oz tubes, designed for quick, dependable repairs on concrete and masonry. The siliconized acrylic latex formula delivers a flexible seal that adheres to walls, sidewalks, steps, and floors, even when surfaces are slightly damp. The material dries to a concrete-like color to blend with surrounding finishes, and you can paint over it with latex paint if a more uniform look is desired. The product is non-flammable and resists color bleed after curing, making it a practical choice for indoor or outdoor projects.

An added benefit is the potential reduction of radon gas penetration through treated cracks, contributing to a drier space when used as part of routine maintenance in basements or crawl spaces.

What it does

• Seals and waterproofs cracks in concrete walks, walls, steps, and floors
• Replaces cracked mortar joints; dries to the color of concrete
• Non-flammable; will not bleed
• May be painted over immediately with latex paint
• Fast, easy clean-up with water
• Acrylic formula fortified with silicone; easy to gun and adheres well to damp surfaces

Why choose this kit

This two‑tube package offers a versatile, paintable repair option with strong adhesion and water resistance. The silicone‑enhanced acrylic composition helps the filler bond to masonry and stay flexible as it cures, while being simple to apply and clean up. The ability to line up with surrounding concrete tones makes repairs look natural rather than conspicuous.

Best uses and benefits

• Ideal for small to medium cracks in foundations, walls, sidewalks, and slabs
• Works on damp cracks, helping to seal gaps before finishing or painting
• Dries to a concrete-like shade for discreet repairs
• Ready to paint with latex paint after drying

How to apply (quick guide)

• Clean the crack and remove loose material
• Cut the tip to the desired bead size, load into a caulking gun, and fill the crack
• Tool for a smooth finish; wipe away excess with water
• Allow to cure fully; latex paint can be applied once dry

Storage and notes

Store in a cool, dry place. Ensure surfaces are clean and free of loose debris before application for best results.