5 Considerations for Expansion Joint Moisture Barriers

Ensure compliance and long-term durability.

Ensuring effective moisture management in your building project is crucial, especially when it comes to expansion joints. Moisture infiltration poses a significant threat to the structural integrity of a building, making it imperative to implement proper drainage solutions. To guide you through this process, here are five key considerations you should keep in mind:

1. Compliance with Local Building Codes:

   The local environment, as outlined in building codes, plays a pivotal role in determining the specific type of moisture barrier required for your expansion joints. Adhering to these codes ensures that your project meets the necessary standards for moisture control.

    

   
   
   
   

2. Integral Expansion Joint Systems:

   Some expansion joint systems come equipped with an integral moisture barrier. These systems feature formed lugs that seamlessly fit into a receiving framework, streamlining the installation process and contributing to a more robust assembly. This design enhances the overall effectiveness of the moisture barrier.

3. EPDM Drape-In Material:

   Alternatively, certain projects may necessitate the use of an ethylene propylene diene monomer (EPDM) drape-in material. This flat material, available in rolls, is draped across the joint and securely sandwiched into each side. Functioning much like a gutter, it efficiently collects and directs moisture away from the joint.

   
   
   
   

4. Consideration of Flooring Conditions:

   Evaluate whether the floor in the designated area will be subjected to wet conditions or regular mopping. Understanding the specific environmental demands on the floor will influence the choice of moisture barrier and help ensure its optimal performance over time.

5. Drainage Requirements:

   Incorporate a thoughtful approach to drainage requirements, considering factors such as slope and tubing every 100 feet. Establishing a systematic drainage system that directs collected moisture to a building drain is crucial for preventing potential water damage and maintaining the longevity of your structure.

By addressing these considerations, you can make informed decisions regarding the type of moisture barrier to implement in your expansion joint systems, contributing to the overall success and durability of your building project.

Nystrom understands the codes and complexities surrounding expansion joints. For more information, or to see how Nystrom can help on your next project, please visit our website or reach out to a Customer Sales & Support expert today.