You don't mind cleaning up for a week when they're done. You don't mind the workers urinating on your property....not IN...but ON. You don't mind them breaking furniture if you have some on your roof deck...and of course don't mind if they tell you something is going to take 5 days and it takes twice as long.
To be fair, I know nothing about roofs...maybe they did a good job. Since they put the roof in my apartment hasn't leaked but everything else was positively nauseating.