We had used U.S. Floors once before in Feb. 2011 to have 300 sq ft of premium hardwood in a single room. It was not perfect but good enough. Our below ground basement flooded during Hurricane Lee when it passed through the D.C. area. We took out the carpet and asked U.S. Floors to replace it and the glued-down parque floor, also damaged by the flood, with engineered bamboo on top of the existing concrete floor. We were given complete assurance that this whole effort would be completed in a timely way. My wife teaches piano lessons in the basement and we could not take off too much time. The problems with U.S. Floors started on day one and continue nearly two months later, still unfinished and unresolved. U.S. Floors arrived on the appointed day, several hours late, and with a new plan, The new plan was to "float" the new floor on a sheet of waterproof foam, instead of gluing it directly on top of the concrete floor AND on top of the old parque. 'Something' would be done to deal with the bump between the concrete floor and the parque. There would be matching bamboo "thresholds" to handle the transitions between the new floor and bare concrete - utility room, laundry room and some closets. Without scraping up the old floor and no gluing, there was obviously much less work, no caustic fumes, no splintered old wood, trash, or work dust. The owner of U.S. Floors was confident and compelling - we "bought in" to the adjustment to "float" the new floor. After three days, they claimed to be done. Thanksgiving was upon us and I had time to examine what had been done. There were no bamboo door thresholds. One door threshold was executed in unfinished oak, and the transition bump where the parque met the concrete was executed in ugly, unfinished oak making a transition 1" higher than the floor that caught one's shoe. This transition is in the most visible part of the entire floor. There was also 32-feet of shoe molding missing. In several places the shoe molding was cracked or split from using too large a fastening nail. Wherever there was difficulty getting the molding to stay secured, they were many extra nail holes. On one 24-inch piece of shoe molding there were 20 nails! In several places in the flooring, there were visible gaps where you could see through to the concrete floor. In many places the new floor deflected as much as 3/8 of an inch. We checked the manufacturer website for the correct procedure for floating a floor. U.S. Floors did none of the checks for flatness before starting the job. And, obviously, they did not level the floor before starting the job. When you step on certain areas of the floor, you feel for a brief second like you are slipping into a fall. I marked the dozen or so areas with the problem, with special note of the worst areas. To correct this problem will require lifting all the boards and filling the depressions with (non compressible) shimming material or thinset, essentially relaying the entire floor. Piano lessons have started back up so scheduling work means taking time off. This would be the fifth day of work. Most recently, after the third week, the owner was to come over and review the deflection problem. He missed two appointments and never called even though I called to confirm the appointment. On one of the installation days, the installer even had another job that he disappeared for three hours to attend to. More days and time off. The last day U.S. Floors came, thinset was mixed and spread somewhere to address the deflection problem. Not sure what happened, but when everything was put back together, they had missed the big deflection spots. The floor is still not level. The owner never came to check his installer's work. Nor did he follow up to see that the problem had been addressed. And they charged our credit card for the remaining amount due without the work being finished or even asking whether we were satisfied. The missing shoe molding and thresholds have never been delivered or installed. It has now been more than ten weeks. The floor is still incomplete. I have given up trying to communicate with U.S. Floors. In the summer, I plan on redoing the two rooms myself, with glue. We have learned our lessons - never, never, change your plan without having time to think it through. Never give them a credit card number and never let anyone talk you into something different at the last minute. Never agree to anything you do not fully understand. This seemingly minor late minute adjustment, floating the floor caused a cascade of unforseen problems all borne by us, not U.S. Floors. The bottoms of several doors had to have their bottoms sawed to clear the higher floor. Built in furniture drawers needed to be adjusted. The heighten transition requires the door to the furnace room to be removed when servicing the furnace. In the end, floating, gluing, etc. is not the problem, U.S. Floors did not know how to lay this floor. Scheduling, lack of experience, competence, integrity, follow-through, customer care, and poor quality are the problem. I would not recommend U.S. Floors to anyone for any work, no matter how simple. F-. Is there such a thing?