Call and talk to a knowledgeable person. Prompt replies to your emails and texts. Wouldn't it be great if all contractors were like this?
Scheduling
Scheduling you can depend on! Honest and realistic initial scheduling estimates and updates if anything changes.
Quality
Walk throughs with the job manager before and after the insulation is installed to guarantee that your expectations are met.
Clean up
Careful and comprehensive prep work before the job and thorough cleanup afterwards to insure your job-site is as clean or cleaner than it was originally.