ARDEX WPM 405
$406.62
ARDEX WPM 405: High-Performance SBR Liquid Polymer & Bonding Additive
ARDEX WPM 405 is a professional-grade Styrene-Butadiene Rubber (SBR) liquid polymer additive. Specially formulated for demanding construction environments, it drastically improves the bond strength, flexibility, and water resistance of cement-based mixes like renders and screeds.
Key Features & Benefits
- Enhanced Durability: Increases tensile and flexural strength for resilient, long-lasting renders.
- Water Resistant: Serves as a temporary waterproofing sealer for rooftops and exposed substrates.
- Eco-Friendly Formulation: Water-based, low-odour, and meets Green Star VOC benchmarks (32g/L).
- Superior Adhesion: The ultimate bonding agent for high-strength slurry coats and repair mortars.
Compatible Substrates
Ideal for use with concrete, masonry, brickwork, Autoclaved Aerated Concrete (AAC) blocks, and external-grade fibre cement sheeting.
Primary Applications
- Cement Admixture: Improves sand/cement mixes, repair mortars, fillets, and covings.
- Bonding Agent: Apply as a high-strength slurry coat for new renders or floor toppings.
- Temporary Sealer: Protects high-exposure surfaces from moisture ingress during construction.
Technical Specifications
- Color: Milky White liquid
- Coverage: Waterproofing (12m² per 2 coats); Slurry coat (3m²/L); Render (2m²/L)
- Pack Size: 20L Pail
- Drying Times: Recoat in 16 hours; full cure in 24 hours.
Product Documentation
Technical Datasheet (PDS) | Safety Data Sheet (SDS)
ARDEX WPM 405 is a high-performance concentrated liquid polymer additive designed to enhance the physical properties of cement-based mixes. Source: Ardex Australia Official Product Page