H2O Supplies

H2O Xpanda PU Seal – Hydrophilic PU for Damp & Seeping Structures

$420.00 AUD
$420.00 AUD
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H2O Xpanda PU Seal is a hydrophilic polyurethane injection resin designed for sealing damp, seeping, and moisture-affected concrete and masonry. It reacts with water to form a highly flexible polyurethane seal that expands in a controlled manner, maintaining contact within cracks and joints.

This is a single-component injection system that reacts only when exposed to moisture. Its low expansion profile and high flexibility make it suitable for long-term sealing where minor movement is present without creating rigid stress points.

Commonly used for basements, retaining walls, tunnels, and below-ground structures experiencing ongoing moisture ingress where controlled swelling and flexibility are required.

• Hydrophilic polyurethane injection resin
• Single-component system (moisture activated)
• Low expansion for controlled sealing
• Highly flexible cured structure
• Reacts with fresh, saline, and mineral water
• Medium viscosity for crack penetration
• Withstands hydrostatic pressure
• Solvent free

• Damp or seeping concrete structures
• Basement and retaining wall seepage
• Cracks and construction joints
• Masonry and brickwork water ingress
• Tunnel gaskets and underground structures
• Areas with ongoing moisture rather than active flow

• Chemistry: Hydrophilic polyurethane (TDI-based)
• Form: Single-component liquid
• Reaction type: Moisture reactive
• Viscosity: 200–350 cps
• Density: ~1.18
• Appearance: Straw-coloured liquid
• Flexibility: Super flexible cured seal
• Expansion: Low, controlled expansion (not high foam)
• Reaction time: Approx. 50–90 sec depending on temperature
• Pack size: 20kg
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