We have had leaks in our stucco around the windows of our house the last three years. The contractor has redone the stucco the first year and caulked other locations the following year. We noticed this year that we have leaks again in 3 of the 4 locations. I'm concerned about mold. We live in northern California. How can we test for mold. Should we have a second opinion from another contractor. Any recommendations for stucco contractors?