Good afternoon. I have a few existing parking lots that have a asphalt buildup varying between 2.25" to 4.5"+ and then one lot with an unknown thickness. The parking lots do have some cracks, but not too excessive. Areas that appear to be in failure will be receiving full depth repair. I have 2 questions. What is the thinnest I can mill in the areas that are 2.25" without leaving the remaining asphalt to thin to be damaged prior to resurfacing? 2nd question would be, if I was to just place a tack coat and an 1.5" overlay, how should the existing cracks be repaired? Would placing tack coat and a 1/4" leveling course fill the cracks prior to the 1.5" overlay? I've read that it is not recommended to crack seal prior to an asphalt overlay. These are in northeast Ohio. Thanks.
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