Ask your driveway contractor what he or she will do in the event of a problem. Your prospective installer should start by giving you good advice on how to avoid issues. For example, even concrete can't support infinite weight and anything one ton or more will likely cause a crack.
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A professional driveway contractor will often guarantee work for a specific amount of time, or by the width of any cracks that appear. Make sure to get a guarantee in writing and ask for references. Ask specifically for cases in which that contractor had to do follow-up work, because talking to other homeowners and hearing about their experiences is crucial. Always check Angie's List for accounts from other members before you hire.
Installing a new concrete driveway is a job that requires precision, patience and skill. By asking the right questions and thoroughly evaluating a contractor's knowledge, you can avoid amateurs and enjoy the benefits that come with hiring a true professional.
Editor's note: This is an updated version of an article originally posted on April 9, 2013.