During construction, the performance of building joint sealants often changes due to storage methods.
Many common problems on construction sites, such as premature curing of sealant, nozzle clogging, decreased adhesion, or material waste, are often not product quality issues, but rather caused by improper storage and usage management.
Especially in environments with high temperature, humidity, or frequent temperature fluctuations, even high-performance sealants may experience performance degradation before and after opening.
Proper Storage Methods for Opened Building Joint Sealants
1. Keep the Sealant Nozzle Sealed
After each use, clean any residual material from the nozzle and seal it with the original cap to reduce air ingress. If the original cap is missing, apply temporary protection methods such as:
- Wrap the nozzle with plastic film
- Secure the seal with tape
- Temporarily seal with aluminum foil
2. Store the Cartridge Sealant Upright
It is recommended to store the sealant upright to reduce the risk of material backflow and nozzle clogging.
Ideal Storage Environment for Construction Joint Sealants
The storage environment directly affects the long-term performance of Эластичный герметик для швов. Unstable temperature and humidity conditions can lead to performance issues and even affect the quality of construction.
Recommended Storage Conditions
To ensure stable sealant performance, store under the following conditions:
- Temperature controlled within the range of 5°C – 25°C to avoid accelerated performance changes due to high temperatures.
- Avoid direct sunlight, prevent performance degradation caused by excessively high local temperatures.
- Maintain a dry environment to reduce the impact of moisture on the sealant.
- Avoid prolonged exposure to high or low temperatures.
Storage Environments to Avoid
In actual warehousing and construction sites, the following situations should be avoided as much as possible:
- High-temperature exposure inside vehicles can easily lead to premature aging of the sealant.
- Uninsulated warehouses or containers with large temperature fluctuations.
- Storage areas with frequent temperature changes can easily affect the sealant’s adhesion.
Storage Precautions at Construction Sites
In construction site environments, sealant is more susceptible to external conditions; therefore, special attention needs to be paid to management methods:
- Avoid prolonged exposure to sunlight.
- Unused products should be resealed promptly.
- Use inventory materials according to the first-in, first-out (FIFO) principle.
- Avoid placing in damp or waterlogged areas.
Good site management can significantly reduce material waste and construction risks.
Can Expired Construction Adhesive and Sealant Still be Used?
Generally, it is not recommended to continue using building joint sealant that has exceeded its shelf life, especially in engineering applications with high-performance requirements such as waterproofing and structural sealing. Even if there are no obvious changes in appearance, its internal chemical structure may have undergone slow changes, thus affecting actual construction performance.
Potential problems include:
- Decreased adhesion
- Incomplete or abnormal curing
- Reduced durability
- Weakened waterproofing performance
To ensure construction quality and safety, products within their expiration date should be used first.
The storage method of building joint sealant directly affects its service life and construction performance. Tengyu focuses on research and development and the production of Construction Joint Sealant, structural adhesives, and waterproofing materials, providing stable and reliable sealing and bonding solutions for global construction and engineering projects. For sealant product solutions and pricing support suitable for your project, please obtain complete product information.