I had my attic insulation replaced. The installers did not install enough insulation 2” below the level. They are coming back to finish. Also they did not cover the attic open and my whole downstairs was covered in a fine gray dust. It took 4 hours to clean everything from ceiling fan to floor and furniture. Know one told us to turn off the A/C the filter was covered to dust. I did get a sorry from the QC.