I tiled my kitchen and a couple of the tiles are now broken. I had a pro come in to estimate doing the repairs and he said that it was because I didn't have cement backerboard. Is that true or is he just trying to dupe me into paying him to remove all the old tile and installing new tile? Also, how can I found local building code to find out if I'm required by law to have backerboard?

There are “no laws” pertaining to the use or non-use of "Cement Backerboards" (CBU) when tiling over questionable substrates. There are a multitude of products that you or others could use instead of CBU, including mine. You did not say what the substrate surface was that you tiled over. There are some surfaces that need specialty products and you may have not done your "homework" before you started your project. Repairs can be made, but loose tiles can be a prelude of more to come if your tile installation materials and tiling techniques were lacking in minimum standards. You are in a dilemma and you will have to give me more information before I can better advise you as to where you stand. Throwing good money after bad is not prudent, neither is getting one persons opinion or solution, unless of course "IT'S MINE". I am proud to be of service to you and others, and my advice comes from 48 years of solid experience and professionalism in an Industry that I love. Armen Tavy

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Armen Tavy