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Benefits of Cementitious Spray Coating for Stormwater Rehabilitation

Benefits of Cementitious Spray Coating for Stormwater Rehabilitation

The benefits of cementitious spray coating for stormwater rehabilitation:

  1. Durability and Longevity: Cementitious coatings are highly durable and can significantly extend the life of stormwater infrastructure. They are resistant to chemical erosion, abrasion, and other forms of wear and tear, ensuring long-term protection.
  2. Cost-Effectiveness: Compared to other rehabilitation methods, cementitious spray coating is cost-effective. It requires less labor and material, and the quick application process minimizes disruptions to the system’s operation.
  3. Improved Water Quality: By sealing cracks and preventing leaks, cementitious coatings help to reduce the infiltration of contaminants into the stormwater system. This results in cleaner water being discharged into the environment.
  4. Versatility: Cementitious coatings can be applied to various types of materials, including concrete, metal, and plastic. This makes it a versatile solution for different components of the stormwater system.
  5. Environmental Sustainability: The use of cementitious coatings contributes to environmental sustainability by reducing the need for new materials and minimizing waste. It also helps to prevent pollution and protect aquatic ecosystems.

Application Process

The application of cementitious spray coating involves several steps:

  1. Surface Preparation: The interior surfaces of the stormwater infrastructure are cleaned and prepared to ensure proper adhesion of the coating.
  2. Mixing: The cementitious mixture is prepared according to the manufacturer’s specifications.
  3. Spraying: The mixture is sprayed onto the surfaces using specialized equipment, ensuring an even and consistent coating.
  4. Curing: The coating is allowed to cure for a specified period, during which it hardens and develops its full strength.


Stormwater rehabilitation is essential for maintaining the functionality and integrity of urban drainage systems. Cementitious spray coating offers a reliable, cost-effective, and sustainable solution for extending the lifespan of stormwater infrastructure and improving water quality. As urban areas continue to grow, the importance of innovative and efficient rehabilitation methods like cementitious spray coating will become increasingly evident.