We don't recommend getting laminate floors with pre-attached padding for your home or business. We've installed over 300 floors for one of the largest direct retailers specializing in laminate flooring. We started up their installation program in San Antonio, TX, Selma, TX and Corpus Christi, TX. and what our installers have noticed is that the floors with pre-attached padding don't offer a true sound barrier. They leave gaps in between the boards and they don't offer a moisture barrier. Below is an example of the type of insulation gaps you could get with pre-attached padding. These floors have over a quarter inch gap. Our recommendation is to get your laminate floors without pre-attached padding and a high quality underlayment that has both a moisture barrier and high-rated sound barrier.