PENTENS PU-300 is a single-component, moisture-cured polyurethane waterproofing membrane designed for long-lasting protection against water ingress. Upon application, it reacts with moisture in the air to form a seamless, elastic, and durable membrane. It is ideal for use on concrete, metal, or masonry surfaces in both above-ground and below-ground waterproofing applications.
Excellent Waterproofing Performance
Forms a seamless, fully bonded membrane without joints or weak points.
Single-Component & Easy to Apply
No mixing required. Applied by roller, brush, or airless spray.
Highly Elastic
Bridges cracks and resists structural movement with elongation >500%.
Excellent Adhesion
Bonds well to concrete, cement screeds, wood, and metal.
Moisture Cured
Reacts with atmospheric moisture — ideal for humid environments.
UV & Weather Resistant
Suitable for both indoor and outdoor use with good resistance to aging and chemicals.
| Property | Value |
|---|---|
| Appearance | Thick liquid, usually black |
| Base | Polyurethane (solvent-based) |
| Application Method | Brush, Roller, Airless Spray |
| Curing Time (Touch Dry) | Approx. 6–12 hours |
| Full Cure | 24–72 hours (depending on humidity) |
| Elongation at Break | ≥ 500% |
| Tensile Strength | ≥ 1.5 MPa |
| Thickness (per coat) | ~1.0 mm (2–3 coats recommended) |
| Coverage Rate | ~1.5–2.0 kg/m² for full system |
| Packaging | 20 kg pail |
| Color | Black (standard) |
Rooftops and terraces
Balconies and decks
Bathrooms and wet areas
Podiums and planter boxes
Foundations and basements
Water tanks (non-potable)
Retaining walls and tunnels
Surface must be clean, dry, and free of dust or oil.
Use PENTENS PU Primer for porous surfaces for better adhesion.
Apply in multiple thin coats rather than one thick coat.
Ensure proper ventilation when used indoors.
Not suitable for negative water pressure areas unless overcoated.
