Every contractor who has anything to do with stucco knows the frustration of hairline cracks that are inherent with a cement stucco system. We try every new product and technique but yet still seem to find ourselves on site with the designer, owner and general contractor pointing fingers at one another for cracks in stucco. When tempers fly and no resolution seems likely, a private consultant can be hired to take core samples and ship them off to the lab for a petrographic analysis.