This investigation was particularly interesting to sample a suspected problem installation of spray polyurethane foam (SPF) insulation. After cutting a wedge out of the foam to access the profile for sampling, VOC meter readings indicated elevated levels from incomplete chemical reactions necessary for proper curing. Many class action lawsuits are currently underway against product manufacturers and installation contractors for improper applications of the SPF insulation. In this photo a roof rafter running a few degrees off from vertical is covered with the foam due to over application. 2017 Project.