Want to tidy my dusty garage floor which was built about 5 years ago but wants to use half the garage as a gym so have been looking at BigDug interlocking rubber floor tiles 14mm thick. Not cheap but should do a good job the question I wanted to ask is has anyone fitted these and how much preparation was needed for garage flooring verrado az. Being 14mm thick and rubber I wondered if they would go straight over the dust or if have I got to completely sweep / Hoover the floor free as being asthmatic that won't be an easy job and the wife says it's man's work being the mancave! Any advice or experience is appreciated cheers.