Quick Answer
To choose the right sealant for your buried cistern, consider factors such as water pressure, soil type, and chemical resistance. Look for sealants that can withstand high water pressure and are compatible with the cistern's material. Select a sealant that meets or exceeds the requirements of the relevant building code.
Selecting the Right Sealant
When selecting a sealant for a buried cistern, the primary consideration is its ability to withstand high water pressure. A sealant that can handle pressures of at least 100 psi (pounds per square inch) is recommended. Examples of suitable sealants include epoxy-based and polyurethane-based coatings. These coatings are available in various forms, including liquid, paste, and film.
Compatibility and Testing
It’s essential to ensure that the chosen sealant is compatible with the cistern’s material, whether concrete, steel, or a composite material. The sealant should not react with the cistern’s material or compromise its structural integrity. Test the sealant by applying a small sample to the cistern’s surface and exposing it to extreme temperatures and water pressure conditions.
Application and Inspection
Proper application of the sealant is critical to its effectiveness. Clean the cistern’s surface thoroughly before applying the sealant, and follow the manufacturer’s instructions for application and curing times. After application, inspect the sealant for any signs of cracks or weaknesses. If necessary, repair or reapply the sealant to ensure a watertight seal.
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