Understanding the NWFA: Bridging the Gap Between Hardwood Flooring Standards and Contractor Knowledge

Ben Hadlock
Jul 26
4 min read

Imagine stepping into your home and feeling the warm touch of beautiful hardwood floors underfoot. When done right, hardwood flooring can transform any space. However, the path to achieving that ideal flooring experience starts with an understanding of the standards set by the National Wood Flooring Association (NWFA). For homeowners and businesses aiming to invest in hardwood flooring, the NWFA's technical guidelines are essential. Unfortunately, many general contractors lack familiarity with these standards, which can lead to issues in flooring performance and aesthetics. In this post, we will explore the NWFA, outline its technical standards, and discuss the knowledge gap that exists among many contractors.

What is the NWFA?

The NWFA is a non-profit trade association that has been advancing the hardwood flooring industry since its establishment in 1985. Representing manufacturers, distributors, retailers, contractors, and installers, it serves as a crucial resource for promoting best practices for hardwood floors. The NWFA aims to educate both industry professionals and consumers about the beauty and value of hardwood flooring. It offers a wealth of standards that professionals should follow during installation and maintenance to ensure every project reaches its full potential.

The Importance of Technical Standards

Technical standards are not just a set of guidelines; they are vital for ensuring the quality and longevity of hardwood flooring installations. The NWFA has established comprehensive standards addressing numerous factors. From preparing the subfloor to understanding the appropriate acclimation protocols, these guidelines help prevent common issues like warping, buckling, and noise.

Consider this: A well-prepared subfloor can contribute to a floor lasting up to 20 years longer than one that is improperly installed. This statistic highlights the importance of adhering to NWFA standards not only for initial aesthetics but for long-term satisfaction.

Key Technical Standards by the NWFA

The NWFA standards touch on several critical areas, including:

Subfloor Preparation: The NWFA emphasizes that a clean, dry, and level subfloor is foundational. For example, testing moisture content in both the wood and subfloor is essential—optimal levels for wood should be between 6% and 9% to ensure stability.
Acclimation: Prior to installation, hardwood flooring must adapt to the environment. The NWFA states that wood should reach moisture equilibrium with the surrounding room; failure to do this can result in expansion or contraction, leading to gaps and even cracking.
Installation Methods: The NWFA details installation techniques, such as nail-down, glue-down, and floating methods, each suited to different flooring types and conditions. For instance, floating floors are particularly useful in spaces where humidity levels fluctuate, making them a popular choice in basements.
Environmental Conditions: The guidelines highlight the need for consistent room conditions during and after installation. Aim for indoor temperatures between 60°F and 80°F and humidity levels around 30-50% to protect your investment.
Maintenance: Correct maintenance is crucial for preservation. Guidelines from the NWFA outline specific cleaning and inspection practices that can extend the life of your hardwood floors, ensuring they remain beautiful for years to come.

The Knowledge Gap Among General Contractors

Despite the NWFA's thorough guidelines, many general contractors are not well-versed in these standards. This is especially true for contractors who focus primarily on general construction rather than specialty hardwood installations.

For instance, some contractors may simplify the installation process and overlook critical steps, such as proper subfloor preparation or the acclimation process. This approach can lead to a range of flooring issues, including squeaking and even early signs of wear.

Consequences of Inadequate Knowledge

The risks of not understanding NWFA standards can result in significant problems for homeowners, such as:

Cupping and Crowning: Without proper acclimation and consideration of environmental conditions, wood can deform, ruining both appearance and integrity.
Squeaking or Buckling Floors: Poor installation techniques may lead to noisy floors or unsightly gaps, which can detract from the overall beauty and functionality of the space.
Increased Maintenance Costs: Floors not meticulously installed according to NWFA guidelines may need refinishing or repairs sooner than expected—sometimes within just a few years, resulting in unexpected expenses.

Training and Certification Opportunities

To bridge the knowledge gap, the NWFA offers training and certification programs for flooring professionals. Workshops, seminars, and online courses provide vital information about the best practices in hardwood flooring installation and care.

Contractors who obtain NWFA certification not only sharpen their skills but also build credibility with clients. Being certified signals a commitment to quality, ensuring that homeowners feel confident in their investment.

The Role of Homeowners in Selecting Contractors

As a homeowner, it is essential to choose a contractor who is familiar with NWFA standards. When interviewing potential candidates, ask about their knowledge of NWFA guidelines and their prior experience with hardwood installations.

Look for contractors who can show you successful projects similar to yours. Don't hesitate to ask questions—this empowers you to select a contractor who understands the complexities involved in hardwood flooring, ensuring you receive the best possible results for your investment.

Final Thoughts

The NWFA sets crucial technical standards for high-quality hardwood flooring installations. Unfortunately, many general contractors are not fully aware of these guidelines, which can lead to unsatisfactory workmanship.

By educating yourself about the NWFA and its standards, you can enhance your flooring experience. Taking the time to select a knowledgeable contractor can safeguard your investment and allow you to enjoy your beautiful hardwood floors for many years to come.