Had a mess of mold behind the insulation in my attic. Had a few small leaks, probably for years, and the insulation was disgusting when we took it down. It was soaked and full of mold. Nusite came in and did a complete overhaul of the attic, removing the basement. I though they were going to make a giant mess, but they were very professional and kept my house clean, despite a lot of traffic in and out for several days.