Spike-
I will try to answer some of your questions ( though you will find a lot of info and feedback throughout the site on RaceDeck flooring as well as others)
I answered your questions within your post in BOLD letters for easy reading
"I'm strongly considering this product for a new garage. A few questions if I may. Do the tiles "creak" or make any noise when a car is entering the garage or when walking across the floor?RACEDECK-ALL FLOORS MAKE A NOISE, SO THE ANWER IS YES BUT I AM NOT SURE IT CREAKS. WE HAVE UNDERLAYMENTS AND/OR CAN RECOMMEND UNDERLAYMENTS TO HELP QUITE THE FLOOR. Do insects, moisture (water) and general debris make their way under the deck or do the end pieces seal out such things? RACEDECK- THE SEAMS BETWEEN THE TILES ARE PRETTY TIGHT AND THIS KEEPS MOST DRIPPING LIQUIDS OUT ( HYDROSTATIC TENSION). THE FLOOR IS DESIGNED TO 'BREATH' ALLOWING AIR TO FLOW UNDERNEATH. CONCRETE IS LIKE A SPONGE AND LEACHES OUT MOISTURE FOREVER. THE MATERIAL RACEDECK IS MANUFACTURED FROM DOES NOT PROMOTE MOLD OR MILDEW. Can moisture seep thru the tiles onto the concrete? Can the tiles be shop vacuumed without scratching or harmed?RACEDECK - YES. YOU CAN ALSO SIMPLY SNAP OUT A TILE OR SECTON IN THE MIDDLE OF THE FLOOR IF NEEDED. Lastly, is there a beveled or angled transition piece that "fronts" the garage overhead door so as to provide a seamless roll over for your vehicles and does that piece seal out cold leaks and such from the outside area? JORGEN- MOST PEOPLE RUN THE EDGING RIGHT UP TO THE RUBBER STOP UNDER THE DOOR AND THIS DOES THE TRICK. Thanks in advance for your responses.