Two things go wrong with how insulation is usually sold in this city. Quotes arrive as a number with no scope attached, so nobody can tell afterwards what was supposed to happen. And the person who quoted the job is often absent on the day.
We do it the other way round. Every job gets a written scope — areas, system, applied depth, exclusions, price — before anything is ordered. The spraying is done in-house rather than handed to a sub, so the crew that sprays it is the crew that walked it with you.
Depth is measured during application rather than estimated once it is out of reach, because applied thickness is the one thing that decides whether a foam job performs, and the easiest thing in this trade to short.