Waterproofing
Polyurethane SystemsPolyurethane Liquid Membrane — 2-Component
High-performance sealing for below-grade and structural applications.
Overview
A two-component polyurethane-bituminous liquid membrane combining the elasticity and chemical resistance of polyurethane (Component A) with the adhesion and cost efficiency of bitumen (Component B). Mixed at the point of application, it cures rapidly to form a seamless, fully bonded elastomeric membrane with outstanding resistance to hydrostatic pressure from both positive and negative sides. Preferred for foundations, below-grade structures, and podium decks where long-term moisture exclusion under sustained water pressure is required.
Key benefits
- ▸Fully bonded to substrate — eliminates all pathways for water migration under the membrane
- ▸Bridges cracks up to 3 mm without loss of waterproofing integrity
- ▸Resistant to hydrostatic pressure from both positive and negative directions
- ▸Root-resistant — certified for use under planted roofs and landscaped podium decks
- ▸Rapid cure — walk-on within 12–24 hours at standard conditions
- ▸Compatible with protection boards and drainage composite overlays
Applications
- Foundations and basement retaining walls
- Below-grade structures, tunnels, and underpasses
- Podium decks and multi-storey car park structures
- Buried concrete tanks and water-retaining structures
Technical documents
Download the full product catalogue, or request the TDS and SDS for project specification and approval.
Download catalogue (PDF) →Request documentation →Indicative technical data
Indicative values only. Refer to the full Technical Data Sheet for certified specifications. Contact Numastec to request the TDS for this product.
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