What are the key qualifications and credentials to look for when selecting a professional hardwood flooring installer? Are there any industry certifications or training programs that indicate a higher level of expertise? How important is experience in working with different types of hardwood flooring, such as solid wood, engineered wood, or parquet? Can you provide insights on the importance of proper subfloor preparation and installation techniques for a successful hardwood flooring installer atlanta? Are there any specific questions to ask a potential installer regarding their process, timelines, and warranty coverage? Lastly, what are the recommended steps to ensure a smooth collaboration and effective communication between homeowners and hardwood flooring installers throughout the project?