Installing Moisture Barrier Under Laminate Flooring

By Admin | July 14, 2023

Installing Moisture Barrier Under Laminate Flooring: Essential Aspects

Laminate flooring is a popular choice for its durability, affordability, and ease of installation. However, it's essential to install a moisture barrier underneath to protect the flooring from moisture damage and extend its lifespan.

Types of Moisture Barriers

Two main types of moisture barriers are available:

  • Plastic sheeting: A polyethylene plastic sheet that is rolled out over the subfloor and overlapped at the seams.
  • Underlayment with moisture barrier: A foam or cork underlayment that has a built-in moisture barrier layer.

Benefits of Installing a Moisture Barrier

  • Protects against moisture damage: Moisture from spills, leaks, or humidity can cause laminate flooring to swell, buckle, and warp. A moisture barrier prevents moisture from penetrating the subfloor and reaching the flooring.
  • Extends the life of flooring: By preventing moisture damage, a moisture barrier helps extend the lifespan of laminate flooring.
  • Improves sound insulation: Moisture barriers with foam or cork backings can also provide sound insulation, reducing noise from footsteps and other sources.

Installation Process

  1. Prepare the subfloor: Ensure the subfloor is clean, level, and dry before installing the moisture barrier.
  2. Roll out the moisture barrier: Start by rolling out the moisture barrier from one wall to the opposite wall, overlapping the seams by at least 6 inches.
  3. Secure the moisture barrier: Tape the seams together with moisture-resistant tape or use moisture-resistant adhesive.
  4. Overlap at corners and walls: Extend the moisture barrier up the walls and overlap it with any baseboards or molding.
  5. Press down the seams: Use a heavy object or roller to press down on the seams to ensure a tight fit.
  6. Tips for Successful Installation

    • Use a moisture barrier that matches the flooring manufacturer's specifications.
    • Overlap the seams properly and use moisture-resistant tape or adhesive.
    • Ensure the moisture barrier is installed under all areas of the flooring, including closets and built-in areas.
    • If the subfloor is uneven or has excessive moisture, consider using a leveling compound or additional moisture barrier protection.
    • Allow the moisture barrier to acclimate to the room temperature and humidity for 24 hours before installing the flooring.

    Conclusion

    Installing a moisture barrier under laminate flooring is crucial for protecting the flooring from moisture damage and extending its lifespan. By following the outlined steps and tips, you can ensure a successful installation and enjoy the benefits of your durable and beautiful laminate flooring.


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