DRYLOK Original Masonry Waterproofer is a latex-based, brush- or roller-applied coating that seals bare concrete and masonry against water seepage. Unlike a masonry paint, which sits on the surface as a film, a waterproofer of this type is worked into the pores and pinholes of the substrate, where it bonds and blocks the capillary paths water travels through block, brick and poured walls.

The manufacturer classifies it as a semi-impermeable coating that keeps both water and vapor out, rated at under 1 perm, and states it stops water up to 10 psi and resists 98 mph hurricane winds when applied to a properly prepared bare masonry surface. Coverage is 75 to 100 square feet per gallon depending on substrate porosity, with a minimum of two coats required; it dries to touch in about 1.5 hours and recoats in two to three hours.

The finish is a flat white with a sandy texture that can be tinted in store or top-coated with latex paint after 24 hours. Cleanup is with soap and water. Surfaces must be free of grease, oil, form release and efflorescence, and smooth concrete should be acid-etched to open the pores before the first coat goes on.

Key Features

• Latex-base formula applied by brush or roller, with soap-and-water cleanup
• Semi-impermeable coating that keeps out water and vapor, rated at less than 1 perm
• Manufacturer states it stops water up to 10 psi and resists 98 mph hurricane winds
• Coverage of 75 to 100 square feet per gallon, with a minimum of two coats required
• Dries to touch in about 1.5 hours and recoats in two to three hours
• Flat white with a sandy texture; tintable in store and top-coatable after 24 hours
• Works into the pores and pinholes of bare masonry rather than forming a surface film like masonry paint
• Suited to interior, exterior, above- and below-grade concrete and masonry walls

Applications

• Interior basement and cellar walls showing seepage or damp spots
• Bare poured concrete and cinder or concrete block foundation walls
• Brick and stucco masonry above and below grade
• Retaining walls and exterior foundation faces
• Crawl space walls and utility or storage rooms
• Concrete fish ponds and non-potable water tanks, after the required cure time
• Repainting or sealing previously bare masonry before a decorative latex top coat

Product Details

• Brand: Drylok
• Manufacturer: United Gilsonite Laboratories (UGL)
• Product Line: DRYLOK Original Concrete & Masonry Waterproofer
• Type: Masonry waterproofing coating
• Base: Latex
• Color: White
• Finish: Flat, sandy texture
• Volume: 1 gal.

Specifications

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