Ron, I want to thank you for all of your responses. I have another question for you. The flooring I've purchased is Bamboo Toast Click Board from Home Legend (part number HL18). The installation instructions DO NOT call for gluing the planks together (placing glue in groove). However, I've installed other brands of engineered flooring together and I've had good results when compared to installations in which I did not use glue (for instance, fewer issues with separation at the seams). The tongue and groove of this particular product is a bit different than I've seen in the past (with older Tarkett products, for instance). Can you think of any reason why I shouldn't glue the planks together (other than that the installation instructions claim that it is not required)? As you recall, I've already installed this floor once and had to pop it up because of the subfloor (which, admittedly, I wouldn't have been able to do had I glued the pieces together). However, now that I've corrected the subfloor I do not plan on popping this floor up again. In your experience, have you always glued pieces together when you've floated a floor or have you been happy with the results when not using glue on products that didn't require it?