Mistakes and miscommunication. If you choose this store, make sure you write down anything said to you and that you clearly understand what is going to be done. I ordered the Core Tec Plus XLE. It's definitely waterproof but scratches VERY easily. I also ordered the Dreamweaver carpeting and am very happy with it. Unfortunately, due to the thickness of the carpet, the installers advised me that a transition threshold could not be installed. I'm worried that the carpet will eventually fray. The store offered to send out someone to review the issues I raised. But the back and forth with the quality advisor resulted in nothing but frustration and irritation not to mention making a false insinuation about my relationship with the homeowner. I can't recommend this store.