Promac Rubber Duck Cemix Waterproof Additive is a high-performance, water-based polymer designed to enhance the strength, flexibility, and water resistance of cement-based mixtures. When added to cement, plaster, or screed, it transforms standard mixes into durable, waterproof systems suitable for demanding environments.
 
This specialised additive improves adhesion and reduces surface friability, creating a tough, long-lasting substrate that resists moisture penetration and surface deterioration. It is ideal for both interior and exterior applications, including bathrooms, balconies, retaining walls, roofs, and areas exposed to constant damp or water.
 
Whether used as a bonding agent, keying liquid, or waterproofing additive, Promac Rubber Duck Cemix Waterproof Additive ensures superior performance and reliability—making it an essential component in professional waterproofing and surface preparation systems.