Roofing
You might think fire is a problem, but you will have water and soot to get rid of when it's gone. These two can damage surfaces directly by scorching them, and they can also form corrosive acids that continue to eat away at surfaces over time. These chemicals are sometimes odorless and invisible to the eye, but they are strong. Our team got to this house because the roof needed our help, we removed as much as necessary, cleaned the soot, deodorized, and made sure we were ready to reconstruct, and one more time, we did it "Like it never even happened."