As a flooring professional who has been in our industry for 26 years, I have seen a lot of changes in the way flooring can be installed. Not only the method for installing flooring, but also the backing systems used on the flooring. Traditionally, broadloom carpet had a breathable backing system, either jute or polypropylene. Now there is almost an infinite amount of backing systems for broadloom that can either be breathable or non-breathable.
So why am I bringing this up? Knowing the backing system of the carpet you are installing is vital to a successful installation. The backing system will dictate which form of moisture testing you will need to do prior to installation. Not all moisture testing is relevant for broadloom carpet with a breathable backing system.