Our products
Our Brands

ARDEX S4 15L Concrete Moisture Barrier & Green Slab Sealer

Professional Moisture & Vapor Emission Control for Green Concrete

ARDEX S4 is an advanced, water-based liquid moisture barrier engineered to penetrate deep into the capillaries of concrete slabs. By reacting with free lime to form a permanent internal seal, it effectively treats green concrete, preventing efflorescence and moisture-related flooring failures.

Why Choose ARDEX S4 Moisture Barrier?

  • Green Slab Compatible: Can be applied to fresh concrete as soon as it is walkable, acting as a high-efficiency curing agent.
  • Deep Penetration: Seals pores, voids, and hairline cracks to block moisture vapor and trapped air.
  • Substrate Versatility: Ideal for preparing slabs for epoxy, polyurethane, or carpet installations.

Technical Specifications & Application

Primary Use: New or green existing concrete substrates requiring rapid sealing.

Application Guide:

  • Small Areas: Apply via low-pressure garden sprayer for controlled distribution.
  • Large Projects: Use an airless HVLP sprayer for maximum efficiency and uniform coverage.

Surface Prep: Ensure the treated surface is sanded and vacuumed 24 hours post-application to guarantee high-strength bonding for adhesives or coatings.

Coverage & Packaging

  • Yield: Approx. 60m² per 15L unit (Application Rate: 4m²/L).
  • Size: 15L Cube.

Technical Documentation

Product Data Sheet (PDS) | Specification Sheet | VOC Certificate

Technical data and application instructions sourced from ARDEX Australia.