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Drinking-water reservoirs
Drinking-water reservoirs require a continuous lining matched to potable-water contact, hygiene requirements, immersion service and reservoir substrate condition. This engineering guide frames the application intent without replacing the current system specification or product technical data sheet.
Use and application
The application intent is waterproofing of drinking-water reservoirs. Start by qualifying the substrate, exposure, service level and maintenance constraints. Rayston Epoxy 100 and Polyurea Rayston are typical reference products for this application. Compare the current Products and Systems documentation, and use the associated application context at Fire water tanks to keep the scope distinct.
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Potable contact, hygiene and reservoir lining
Reservoir linings in potable service must meet project hygiene and drinking-water contact requirements in addition to waterproofing performance. Concrete tanks bring porosity, alkalinity, moisture and cracking risks; cleaning regimes and disinfection must not degrade the selected system. Wall–floor transitions, joints, pipe penetrations, overflow weirs, manways, ladders and inspection points need a continuous, documented detail before the lining route is fixed.
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Layers and references
Define the sequence from prepared substrate through primer or bond coat, functional membrane or body coat, reinforcement where specified, and protective or finish layer where required. Use the current technical data sheet for preparation, mixing, consumption, thickness, overcoat windows and cure; the Calculator supports quantities, while Systems and the product references establish the applicable route.
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Common mistakes
- Selecting a lining from a generic waterproofing label without verifying potable-contact suitability and hygiene documentation for the project.
- Omitting joints, penetrations, manways, overflow weirs and terminations, or treating the open floor as the whole lining detail.
- Closing the build-up before checking moisture, adhesion, thickness, pinholes and cure under immersion conditions.
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Operating sequence
1. Record potable-contact requirements, cleaning and disinfection regime, reservoir dimensions, substrate condition and service scenario. 2. Map joints, wall–floor transitions, penetrations, manways, overflow weirs and repair zones. 3. Select a compatible route in Systems and verify every layer against the current technical data sheet. 4. Calculate quantities with the Calculator. 5. Approve a representative area, document preparation and application controls, inspect continuity and release the reservoir only when the project requirements are met.