vapor barrier

  I was recently involved as an expert witness in a case where, among many other flawed parts of the project, I came across a distinctly substandard pool deck. The grout was cracking all over the place, and most of the flagstone veneer was either loose or in the process of breaking free of the substrate. The diagnosis didn’t take long: All I did was dig back a part of the lawn at the edge of the patio, and the not-so-surprising truth revealed itself.