What are the best practices for installing wood floor underlayment to ensure a smooth and durable foundation for your flooring?

The best practices for installing wood floor underlayment include ensuring the subfloor is clean, dry, and level before installation, using the correct type of underlayment for your flooring, securing the underlayment properly to prevent movement, and leaving expansion gaps around the edges. These steps will help create a smooth and durable foundation for your wood flooring.