In winter construction, the perform of PU sealants can deteriorate, not necessarily due to the application process, but rather due to problems that occur during storage. Low temperatures, freezing, or improper storage can directly lead to sealant failure, which is particularly common in winter projects.
Risks caused by improper PU sealant storage in winter
Risks of improper PU adhesive sealant storage in winter include:
- Slower curing: Low temperatures and humidity will extend curing time, resulting in a dry surface but incomplete internal curing.
- Sealant performance degradation: Decreased adhesion and cracking often lead to rework issues.
- Costs increase: Improper storage will lead to the sealant less sticky to peel or crack during installation.
- Slower construction speed: Temporary material replacements or rework lead to increased costs and delayed project.
Best practices for sealant storage in winter
To keep your winter construction project running smoothly, we recommend following the manufacturer’s guidelines.
Control storage temperature
It is recommended to store PU joint sealant at a temperature range of 4°C to 25°C (40°F to 77°F). If it is at night or during cold weather, sealants should be moved indoors or to a temperature-controlled area.
Avoid direct contact with the ground
Excessive humidity can also affect the performance of the sealant. It is recommended to use pallets and shelves instead.
Prevent direct sunlight
Even in winter, prolonged sunlight and temperature changes can accelerate material aging. When storing outdoors, choose a shady area and take protective measures.
Regularly rotate inventory and check sealant condition
Clearly label product types and dates of receipt, and regularly check for abnormalities such as thickening or clumping.
When conducting construction in winter or in cold regions, it is crucial to select sealants and suppliers that have clear storage specifications and comprehensive technical support.
Tengyu Chemical provides precise product data sheets and technical services, and can adjust formulations according to your project needs, ensuring that the engineering team maintains stability and control during construction, even in low-temperature environments.
