Palmerston Hospital

This project at Palmerston Hospital involved the comprehensive lining of two 220,000-liter potable water tanks (each 12 meters in diameter and 2.4 meters in height) to address concrete deterioration and prevent water leaching, which was impacting water balance. Originally constructed without an internal liner, these tanks required a durable, continuous liner across all internal surfaces, including walls, roof, base, support columns, and lids.

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The scope of work included:

• Surface Preparation: Abrasive blasting and filling bug holes to prepare a smooth surface.

• Sealing and Coving: Flexible sealant was applied to the roof-to-wall joint perimeter to block water penetration behind the liner, and coving was installed for added integrity.

• Priming and Lining: Application of SP150 primer followed by a concrete grey PP1195 pure polyurea liner, ensuring a flexible, seamless protective layer.

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The project was completed in July 2024 without delays or issues, achieving an enhanced durability outcome for the tanks. So far, the lining system has proven effective in extending the service life of these water storage assets.

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