Moisture Barriers: Do I Need One?

When it comes to flooring installations, especially on concrete subfloors, homeowners often focus on the aesthetics and functionality of their chosen flooring materials. What many might not realize is that there?s a hidden, potentially destructive threat lurking beneath the surface: moisture.? Concrete subfloors have the ability to generate moisture over time, and without proper protection, this can lead to significant problems. In this blog, we will explore why having a moisture barrier on your concrete subfloor is crucial. We?ll delve into how moisture is naturally created within concrete subfloors and why installing a moisture barrier is essential to safeguard your investment in new floors.?
Visqueen (A Form of Moisture Barrier) Being Installed Prior to Vinyl Flooring
Visqueen (A Form of Moisture Barrier) Being Installed Prior to Vinyl Flooring



The Concrete Conundrum: A Moisture Generation Source


Concrete, despite its solid appearance, is not impervious to moisture. It has the unique property of being hygroscopic, which means it can naturally attract and retain moisture from its surroundings. This process, known as moisture vapor transmission, occurs over time as concrete absorbs moisture from the ground, surrounding soil, or even from humidity in the air.?

Here?s why moisture generation in concrete subfloors is a concern:?

  • The Slow Buildup: Moisture in concrete accumulates gradually over the years. It?s often an unseen, silent process that can continue even after the concrete appears dry to the touch.?
  • ?Impact on Flooring: When you install new flooring materials, moisture from the concrete can migrate upward. This moisture intrusion can affect various flooring types, including hardwood, laminate, carpet, and vinyl, leading to issues like warping, buckling, or mold growth.?
  • Adverse Effects: Excessive moisture in your subfloor can also compromise the integrity of adhesives used in flooring installations. This can result in adhesive failure, causing tiles to come loose or creating bubbles in vinyl flooring.?

The Importance of a Moisture Barrier: Protection and Prevention


Installing a moisture barrier on your concrete subfloor serves as a vital preventative measure to counter the effects of moisture vapor transmission. Here?s why it?s crucial:


  • Moisture Control: A moisture barrier, often in the form of a specialized underlayment or a sheet material, creates a barrier between the concrete and your flooring material., It effectively blocks the upward migration of moisture, preventing it from reaching and damaging your new floors.
  • Preserving of Flooring: With a moisture barrier in place, you safeguard your investment in new flooring. It ensures that your floors remain free from issues like warping, buckling, or mold growth, preserving their beauty and functionality for years to come.?
  • Preventing Mold and Mildew: Moisture is a breeding ground for mold and mildew. By blocking moisture from reaching your flooring, a moisture barrier? helps prevent the growth of these unsightly and potentially harmful organisms.
  • Longevity of Adhesives: A moisture barrier also safeguards? the adhesive used in your flooring installation. This ensures that tiles, planks, or other flooring materials remain securely bonded to the subfloor, preventing issues like tile coming loose or sheet vinyl peeling.?
  • Enhanced Indoor Air Quality: Mold and mildew growth due to excess moisture can compromise indoor air quality, potentially leading to respiratory issues. By preventing moisture intrusion, a moisture barrier contributes to a healthier indoor environment.?
A Roll-On Moisture Barrier by Wakol for Hardwood Flooring Installation
A Roll-On Moisture Barrier by Wakol for Hardwood Flooring Installation


Professional Installation: The Key to Success


While recognizing the importance of a moisture barrier is crucial, equally important is ensuring its proper installation. The task is best entrusted to a licensed professional installer with expertise in moisture control and flooring installation. Here?s why:


  • Precise Application: Professionals have the knowledge and experience to install moisture barriers accurately, ensuring complete coverage and effectiveness.?
  • Adherence to Manufacturer Recommendation:? Flooring manufacturers often provide specific guidelines for moisture barrier installation to maintain warranties. Professionals are well-versed in adhering to these guidelines.
  • Testing and Assessment: Professionals can conduct moisture tests to assess the moisture levels in your concrete subfloor accurately. Based on these results, they can determine the appropriate type and thickness of moisture barrier required.

In conclusion, the presence of moisture in concrete subfloors is a natural occurrence that can pose a significant threat to your flooring investment over time. To protect your new floors from the adverse effects of moisture vapor transmission, it is essential to install a moisture barrier. This barrier serves a critical defense, preventing moisture from compromising the integrity of your flooring and preserving its longevity and beauty.?

To ensure the success of your moisture barrier installation, it?s highly recommended to rely on the expertise of licensed professionals installers. Their precise application, adherence to manufacturer recommendations, and ability to conduct moisture testing are invaluable in safeguarding your floors against the hidden threat of moisture. By taking these precautions, you can enjoy the beauty and functionality of your new floors for years to come, free from the worries of moisture-related damage. So, when it comes to protecting your flooring investment, remember: a moisture barrier is your floor?s best friend.?