JS Polymer-Modified Cementitious Waterproof Coating

JS Polymer-Modified Cementitious Waterproof Coating

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Product Description

 

Product Overview

An eco-friendly dual-component coating combining organic polymers and inorganic cementitious materials. Compliant with GB/T 23445-2009 national standards, it forms a flexible yet durable waterproofing membrane with superior adhesion to diverse substrates.

Key Features

  • Substrate Versatility
    Bonds to wet/dry surfaces: masonry, concrete, metal, wood, plastics (EN 14891)

  • Structural Performance
    Tensile strength: ≥1.8 MPa | Crack bridging: ≤0.8mm (EN 14891)

  • Environmental Safety
    Zero VOCs, non-toxic (ISO 16000)

  • Application Advantages
    Vertical non-sag application | Moisture vapor transmission: ≥0.15 kg/m²·24h

  • Durability
    Alkali resistance (pH 14) | Freeze-thaw stable (-20°C to +80°C)

Technical Specifications

Parameter Value Standard
Adhesion (concrete) ≥1.0 MPa EN 1542
Water absorption ≤4.0% EN 1062-3
Cure time 4h @ 25°C ASTM C309

Applications

Suitable Substrates

Concrete | Tile | Metal | Wood | PVC | EPS | Asphalt | Rubber | SBS/APP Membranes

Project Types

  • Building interiors: Bathrooms, kitchens, basements

  • Civil structures: Tunnels, bridges, reservoirs

  • Industrial: Water treatment plants, containment areas

  • Restoration: Historical buildings, leak repairs

Application Guidelines

  1. Environmental Conditions

    • Minimum temperature: +5°C

    • Relative humidity: ≤85%

    • Prohibited during precipitation

  2. Mixing Protocol

    • Ratio: 1 part liquid : 2.5 parts powder by weight

    • Mix 5 minutes → Rest 2 minutes → Remix

    • Pot life: 60 minutes @ 25°C

  3. Coating Procedure

    • Apply 2 coats (cross-direction)

    • Minimum thickness: 1.2mm

    • Recoat interval: 4-6 hours (touch-dry)

  4. Critical Notes

    • Never add water after mixing

    • Topcoat colored layers with pH-neutral sealers

    • Protect from freezing during curing