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Products for Waterproof

RDP, HPMC, and HEMC are key additives in polymer-modified waterproof mortars and coatings, transforming rigid cementitious mixes into flexible, durable waterproof membranes.

Redispersible Polymer Powder (RDP)​ is the core component for creating a flexible, crack-bridging polymer film, which is essential for long-term waterproof performance. It significantly enhances adhesion to various substrates, provides elasticity to accommodate structural movement, and drastically reduces water permeability by blocking capillary pores—fundamental to achieving a reliable waterproof barrier.

Hydroxypropyl Methylcellulose (HPMC)​ and Hydroxyethyl Methylcellulose (HEMC)​ are essential for optimizing the fresh properties of waterproof mortar. They provide crucial water retention, preventing rapid water loss to absorbent substrates and ensuring complete cement hydration and proper RDP film formation—both critical for consistent waterproofing. They also improve workability, sag resistance, and mix homogeneity, contributing to uniform application and consistent waterproof membrane thickness.

Together, this synergistic combination ensures the creation of a seamless, strongly adhesive, and highly water-resistant waterproof barrier, delivering durable protection in demanding applications.

RDP Recommendation in Waterproof

Type Polymer Base TG/℃ MFFT Recommendation
RDP Poly 795 EVA -5 0±2 -Polymer-Modified Cementitious Waterproofing Mortar
-Flexible Waterproofing Render / Waterproofing Plastering Mortar
RDP Poly 815 EVA 15 2±2 -Waterproof / Enhanced Waterproof Tile Adhesive
RDP Poly 820 EVA 18-22 2±2 -Waterproof / Enhanced Waterproof Tile Adhesive