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Leakmaster

Leakmaster LV-Z: A trusted hydrophilic polyurethane waterstop for superior waterproofing.

Leakmaster

Leakmaster LV-Z is a high-performance waterproof polyurethane sealant designed to create reliable watertight seals in concrete construction joints and penetrations. As a single-component hydrophilic sealant, it expands on contact with water to compensate for concrete shrinkage and minor joint movement, helping prevent water ingress over the life of the structure.

Suitable for concrete, steel, rock and other common construction substrates, Leakmaster provides an effective sealing solution where conventional hydrophilic waterstop profiles or solid waterstops are difficult to install. Its gun-grade consistency allows easy application to irregular joints, rough surfaces and complex penetrations, making it a practical choice for challenging waterproofing details.

For enhanced durability and waterproofing performance, choose Leakmaster, a leading waterproof sealant in hydrophilic waterstop solutions. We also offer Hydrotite, a hydrophilic rubber waterstop best used in joints.

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Specification

Product Code Description Pack Qty
101828 Leak Master 320mL 24

Key features and benefits

  • Hydrophilic technology – Expands up to 2x its original volume when exposed to water, creating a reliable watertight seal.
  • Resists high water pressure – Supports up to a 20 m water head for demanding waterproofing applications.
  • Strong adhesion – Bonds securely to concrete, steel, rock, glass and other common substrates.
  • Ideal for complex detailing – Seals irregular joints, rough surfaces and penetrations where conventional hydrophilic waterstop systems are unsuitable.
  • Easy to install – Single-component waterproof polyurethane sealant applied with a standard caulking gun.
  • Accommodates movement – Expands to compensate for concrete shrinkage and minor joint movement while maintaining flexibility.
  • Reliable waterproofing solution – Delivers long-term performance across a wide range of waterproofing solutions.

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