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Zinsser WATERTITE-LX Ultra Mold & Mildew-Proof Waterproofing Paint

Zinsser WaterTite LX Ultra Mold & Mildew Proof Waterproofing Paint is a modified acrylic copolymer coating designed to create a water-tight barrier on concrete and masonry surfaces. It blocks water intrusion on interior and exterior walls and resists fungal defacement, efflorescence, and hydrostatic pressure. Suitable for vertical or horizontal concrete surfaces above or below grade.

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Save $45.41 Save $2.79
Original price $21.53
Original price $21.53 - Original price $178.81
Original price $21.53
Current price $18.74
$18.74 - $133.40
Current price $18.74
Availability:
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Availability:
7 in stock!
Availability:
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SKU ZIN-WATERTITE-LX-QUART-271098
Size: Quart

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Description

Zinsser WaterTite LX Ultra Mold & Mildew Proof Waterproofing Paint is a modified acrylic copolymer coating formulated to create a water-tight barrier on concrete and masonry surfaces. It is suitable for interior or exterior use, above or below grade, on vertical or horizontal concrete block (excluding lightweight block) and cast-in-place concrete. The coating prevents moisture intrusion on basement walls, retaining structures, planters, and utility areas, and can also stop water from exiting canals or holding basins. It functions as a block filler in wet environments where epoxy finishes will be applied and is not recommended for swimming pools or areas in contact with potable water. 

Key Features

  • Waterproofing Barrier: Creates an impermeable coating for concrete and masonry surfaces.
  • Interior and Exterior Use: Suitable for above- or below-grade vertical and horizontal applications.
  • Hydrostatic Resistance: Withstands up to 20 PSI of water pressure.
  • Mold and Mildew Protection: Resists fungal defacement when exposed to moisture.
  • Fast Drying: Recoat in 2–3 hours with low odor and simple water cleanup.
  • Compatible Topcoats: May be painted with latex, oil-based coatings, or epoxy systems.
  • Efflorescence Resistance: Helps prevent salt deposits from surfacing.
  • Coverage: Approximately 100 sq ft per gallon.

Specifications

Specification Details
Product Type Acrylic copolymer waterproofing paint
Application Surfaces Concrete block, cast-in-place concrete
Hydrostatic Resistance Up to 20 PSI
Dry Time 2–3 hours to recoat
Coverage 100 sq ft per gallon
Cleanup Soap and water

Zinsser WaterTite LX Ultra provides a smooth, low-odor waterproof coating for concrete and masonry surfaces while supporting long-term resistance to moisture and fungal defacement.

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Frequently Asked Questions

Where can this waterproofing paint be applied?
Zinsser WaterTite LX Ultra can be applied to interior or exterior concrete block and cast-in-place concrete, both above and below grade, on vertical or horizontal surfaces.
Can WaterTite LX Ultra be painted over?
Yes. Zinsser WaterTite LX Ultra can be top-coated with latex, oil-based coatings, or epoxy finishes after proper dry time and cure.
What level of water pressure can it withstand?
Zinsser WaterTite LX Ultra resists up to 20 PSI of hydrostatic pressure, making it suitable for basement walls, retaining structures, and other moisture-prone areas.
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