We removed the existing and decompressed insulation from the attic using a 19 HP vacuum and removal tubes. After we began our process of decontamination by cleaning, disinfecting, and air sealing in the attic. We then located and sealed potential entry points we found in the attic using expandable foam, mesh, and silicone as needed. We installed Batts insulation, by Owens Corning EcoTouch made with PureFiber technology accordingly to CA building code.