Richlam® Surface Waterproofing
Crystalline Protection That Seals and Heals
Richlam® is the crystalline waterproofing brand under Richlam Development Group, offering a full range of integral waterproofing and surface-applied crystalline technologies, including waterproofing admixtures, crystalline sealers, and crystalline admixtures for mortars. Available in both water-based and powder form, these products are applied either integrally or topically and are engineered to enable self-healing concrete, where no cracks mean no leaks. The result: concrete structures that are sealed from within, with waterproofing durability equal to the structure’s lifespan.
Rooted in biomimetic innovation, Richlam®’s sealing systems represent one of the most mature commercial applications of self-healing concrete technology. The product line includes Richlam300, a penetrating waterproof concrete sealer, and Richlam400, a crystalline waterproofing coating. While differing in form, both share the same crystallization waterproofing mechanism, penetrating the surface and forming a dense crystalline layer that seals cracks up to 0.2–0.4 mm and enhances both waterproofing and anti-corrosion performance.
Applied directly to the surface, these spray-on waterproofing chemicals for concrete penetrate deeply and crystallize within the structure. Although surface-applied, they effectively transform the concrete itself into a waterproof barrier. Unlike traditional membranes, Richlam®’s waterproofing layer does not delaminate or degrade over time—earning its reputation as a “skin-like protective layer that grows with the concrete.”
Self-Healing: Breakthrough Waterproofing Technology
Richlam® Crystalline Sealers and Coatings
Richlam® is globally recognized for its biomimetic self-healing concrete technologies. Inspired by the way bone tissue regenerates, Richlam® integrates crystalline growth factors with the concrete matrix to form an active self-repairing system. Each Richlam® product contains highly active nano-silica-based agents that penetrate deeply and react with moisture and alkalinity to initiate crystallization. These agents are hydrophilic, nano-sized, and alkali-activated—enabling deeper penetration and stronger, faster crystalline sealing from within.
According to the Richlam® Technical Center, the internal alkalinity of concrete is 360 times higher than the surface. This allows Richlam®’s penetrating sealers for concrete to activate deep within the structure, forming dense interlocking crystals at cracks and pores. These crystals heal cracks, block water pathways, and dramatically improve concrete impermeability and structural integrity.
Compared to conventional products on the market, Richlam®’s nano-crystalline formulation delivers superior reactivity and deeper penetration—up to 30 mm—creating a stronger, longer-lasting crystalline waterproofing layer at the surface level.
Nano Technology, Deep Penetration up to 30mm
Self-Diagnosis, Self-Repair
How Richlam® Creates Smart Waterproofing Systems
Richlam® is committed to developing smart concrete materials that sense, adapt, and self-repair. The company has achieved significant milestones in crack detection, temperature regulation, self-controlled microcracking, and long-term crack self-healing. These advancements have given rise to intelligent concrete systems that behave like living organisms—capable of responding to damage autonomously.
Richlam®’s high-activity crystalline agents mimic biological cell regeneration, automatically repairing both initial defects and future cracks without the need for external intervention. In real-world applications, Richlam® enables maintenance-free concrete structures, even in aggressive environments.
How Richlam®’s Crystalline Waterproofing Coating Works:
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Crystalline sealing material penetrates concrete’s surface via cracks, pores, and voids and enters a dormant state when dry.
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When water enters cracks, hydrophilic crystalline agents are activated by the alkaline environment and react with cement hydration products to form new crystals, sealing cracks up to 0.4 mm.
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Once sealed, water cannot pass through, but vapor can still escape—maintaining breathability and preventing internal moisture accumulation.
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Upon drying, the crystalline system returns to dormancy, ready to re-activate if water is reintroduced.
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This cycle of dormancy-activation-crystallization repeats indefinitely, enabling the material to self-heal new cracks over the life of the structure.
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Global Standards, Global Reach
Reliable Waterproofing Systems for Concrete Worldwide
Richlam® delivers advanced integral waterproofing systems to clients worldwide. As a global leader in crystalline waterproofing admixtures and self-healing concrete technologies, Richlam® is trusted by engineers, contractors, and developers across diverse industries. Years of dedicated R&D have led to breakthroughs in crystalline waterproofing chemicals, material synthesis, and self-healing mechanisms.
Used in real-world construction projects worldwide, Richlam®’s waterproofing solutions are proven to eliminate leakage from within the concrete. By turning the concrete itself into a waterproof barrier, Richlam® products deliver long-lasting durability and structural waterproofing.
Richlam® solutions meet international standards including ASTM (USA), CE (EU), UKCA (UK), and CSA (Canada), and have passed California Proposition 65 and potable water certifications. Free from VOCs and made with inorganic waterproofing chemistry, these materials meet global green building requirements and are safe for sensitive applications.
Self-Healing Waterproofing: A Global Consensus
Partner with Us to Shape the Future of Waterproofing
Membrane systems are short-term surface fixes. Global construction practice increasingly confirms that true waterproofing must begin within the concrete itself. Yet overcoming the challenge of cracks and micro-defects has eluded the industry for decades. Richlam® offers a proven, future-ready solution—from waterproofing as a surface treatment to waterproofing as structural performance.
With Richlam®, waterproofing becomes a byproduct of improved concrete quality. The core function of Richlam®’s crystalline waterproofing technology is not only to seal but to enhance concrete’s total durability—resisting chloride intrusion, freeze-thaw cycles, carbonation, acid attack, and alkali-silica reactions. As supported by ACI research, crystalline waterproofing chemicals are among the most effective and sustainable ways to protect and extend the life of concrete structures.
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