Quick Answer
Temperature extremes can affect cistern sealants, causing them to degrade faster and compromise the integrity of the cistern. Extreme heat can cause sealants to become brittle and crack, while extreme cold can cause them to become brittle and shatter. This can lead to water leaks and contamination.
Effects of Temperature Extremes on Cistern Sealants
Sealants used in cisterns, such as epoxy or polyurethane, are typically designed to withstand a certain range of temperatures. However, extreme temperatures can cause them to degrade faster than expected. For example, a temperature of 140°F (60°C) can cause epoxy sealants to degrade 2-3 times faster than at room temperature (72°F or 22°C).
Choosing Temperature-Resistant Sealants
When selecting a sealant for a cistern, it’s essential to choose one that is specifically designed to withstand extreme temperatures. Look for sealants with a high temperature range, such as those rated for use in temperatures up to 200°F (93°C). Additionally, consider using a sealant with a high tensile strength, such as a polyurethane-based sealant, which can withstand the stresses caused by temperature fluctuations.
Applying Sealants in Extreme Temperatures
Applying sealants in extreme temperatures can be challenging. In hot temperatures, it’s essential to ensure that the sealant is applied slowly and evenly to prevent it from drying out too quickly. In cold temperatures, it’s essential to ensure that the sealant is applied in a warm environment, such as a heated garage or workshop. Additionally, consider using a sealant with a slow cure time, such as a polyurethane-based sealant, which can be applied in cold temperatures and still cure properly.
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