$310.00
In stock (can be backordered)
ARDEX WPM 405 (Sheltercrete Additive) is a high performance polymer additive for cement and concrete mixes. It is a SBR, multipurpose, concentrated, liquid polymer additive which greatly improves the bond strength, flexibility and workability of sand/cement mortars and screeds. Being water resistant, ARDEX WPM 405 mixed with cement can be used as a temporary waterproofing sealer. When used as an admix for mortars and screeds ARDEX WPM 405 can be applied to damp surfaces (not wet) and can be painted over. FEATURES/BENEFITS Water resistant: used as a temporary waterproofing sealer on rooftops when mixed with cement. High strength: ideal for use in patching mortars as it can be feathered out with minimal cracks, and also for use in coving areas. Non-toxic: does not cause Occupational Health and Safety concerns. Reduces the cement:water ratio, which results in a stronger mortar/screed.