Case study of Coromandel International Ltd – PU Waterproofing

Coromandel International Ltd Project Overview:

In the heart of Hyderabad, Telangana, a groundbreaking construction project – the construction of the Coromandel International Ltd plant has taken shape.

The Coromandel development exemplifies the seamless marriage of innovation and tradition.

Site Challenges for Coromandel International Ltd:

Given the expansive scope of the project, the selection of waterproofing materials played a pivotal role in addressing specific challenges.

Sunanda Global’s polyurethane base primer and liquid-applied polyurethane waterproofing and sealing membrane emerged as the ideal solutions, meeting the client’s stringent requirements.

Sunanda Global’s Polyurethane Waterproofing Solutions:

The selected products offered unparalleled advantages.

The polyurethane base primer, designed for use on various surfaces, including car park decks, ramps, and turning areas, demonstrated its suitability for all zones within the construction site.

Its seamless and watertight nature, coupled with UV resistance, provided an added layer of protection against environmental elements.

Application Process:

The project’s success hinged on meticulous surface preparation, a step deemed critical for maximum adhesion between the coating and substrate.

The application method involved thoroughly mixing the polyurethane base primer and subsequent application using brushes, airless spray, or other suitable means.

The primer, in this case, Sunanda Global’s specialized product, showcased its rapid application, reliability, and safety.

Following the priming process, applying the liquid-applied polyurethane waterproofing and sealing membrane came into play.

Its ability to adhere firmly to concrete surfaces while remaining flexible under extreme temperature conditions ensured a robust and long-lasting waterproofing solution.

Surface Preparation and Coating Application:

The surface preparation for the application of the liquid-applied polyurethane membrane involved the removal of foreign matter, followed by mechanical cleaning methods and compressed air.

The polyurethane base primer’s priming process laid the foundation for the subsequent coating application.

The project contractors then applied the liquid-applied polyurethane membrane in two coats, providing a strong, thick, and flexible waterproofing layer.

The first coat, applied at a recommended rate by Sunanda, was allowed to cure until tack-free, typically overnight.

The second coat, applied at right angles to the first, enhanced waterproofing capabilities.

They sprinkled the sand over the second coat, providing the necessary key for a protective screed to ensure a secure bond.


The success achieved at the Coromandel International Ltd plant in Hyderabad, Telangana, demonstrates the fruitful partnership between Coromandel’s contractors and Sunanda Global.

By employing Sunanda Global’s polyurethane base primer and liquid-applied polyurethane waterproofing and sealing membrane, the endeavour not only achieved but surpassed established industry standards.

The project’s construction site has transformed into a resilient and sustainable structure, seamlessly blending modern industrialization with environmental responsibility.

Through adopting Sunanda Global’s innovative solutions, the project at Coromandel International Ltd has established a new standard for construction excellence.

The flawless integration of the polyurethane base primer and liquid-applied polyurethane membrane underscores a commitment to quality, durability, and environmental awareness, positioning Coromandel International Ltd as an exemplary model of contemporary construction practices.