I posted this as a counter to all the nonsense I hear that you should only hire a certified NWFA inspector to examine your flooring issues. As the author who wrote this as a counter article to an previous published article in the Hardwood Floors magazine of the NWFA.
The part I specifically enjoy is the last part about installers and field experience.

http://hardwoodfloorsmag.com/articles/a ... 7&zoneid=2

Snippets:
Do Daubert Factors Make Better Inspectors?

The implication from the prior article is that compliance with the Daubert factors is what makes an inspector be “considered an expert witness.”

This implication begs the question “expert for what?” In fact, an inspector could have all of the Daubert factors and the opinion could still be excluded. What if the industry standard upon which the expert relies directly conflicts with the manufacturer’s installation instructions? In such instance, that expert’s opinion might not be applicable. Likewise, an expert may have an opinion that has been tested in a laboratory and might for that reason seem sound, while failing to account for real conditions and adjustments required for the particular location and installation.

What Is the Value of Certification?

On its own, certification only establishes proof that the inspector acquired the particular skills for which the certificate was given. It does not necessarily render an inspector’s opinion more or less credible.


What About Experience?

Field experience cannot be discounted. An installer working in a particular region for 15 years should have more knowledge and understanding of the particular conditions and requirements for wood installation in that region than an inspector who relies primarily or solely upon a particular industry testing procedure. Note that proficiency in testing according to industry methods only provides consistent data, but the interpretation of that data requires an understanding of how that data is applied in the field.