Established Locals vs. Storm Chasers

Quick Answer
When an Iowa derecho or massive hail storm hits, hundreds of out-of-state "roofing companies" suddenly appear in your neighborhood. Here is why hiring them is a catastrophic mistake.
The Anatomy of a Storm Chaser
"Storm Chasers" are highly organized, aggressive sales organizations that closely track weather patterns on radar. Within 24 hours of a major hail storm hitting Des Moines, they dispatch armies of door-to-door salesmen to blanket the devastated neighborhoods.
Their trucks have local 515 area codes plastered on the sides (usually just forwarding numbers). They spin up a sleek, temporary website. They promise they can "get you a free roof from your insurance company in 2 weeks" because they know the local, elite contractors are instantly backlogged for 4 months.
The Hit-and-Run Consequence
Storm Chasers do not actually install roofs. The slick salesman at your door simply acts as a sub-contracting middleman. Once you sign the absurdly restrictive contract (which usually entitles them to 100% of whatever your insurance pays out, regardless of what they actually install), they hire the cheapest, lowest-tier labor crews they can find to desperately slap shingles onto your home before moving to the next city.
The Warranty Nightmare
Six months later, your roof leaks during a spring thaw. You try to call the number on the business card. It's disconnected. The sleek website is gone. The LLC has been dissolved. The "company" is currently three states away in Missouri chasing a tornado.
You have absolutely no recourse. Their 10-year workmanship warranty was a ghost. You will have to pay thousands of your own dollars to a real local contractor to fix their blunders.
The Local Elite Advantage
A true, elite local contractor has deep, permanent roots in the community. They have physical showrooms you can visit. They sponsor local little league teams. Their kids go to school with your kids.
Because they rely entirely on local, word-of-mouth reputation and Google Reviews to survive the slow winter months, they must do the job perfectly. If a true blue local contractor messes up your roof, they can't just run to Missouri. They are forced to fix it, or risk the destruction of their brand.
Patience is Profitable
The best local contractors will be booked out for months after a major storm. Do not let panic or aggressive door-knockers force you into a bad decision. A leaking roof can be temporarily tarped. It is infinitely better to wait 4 months for an elite local company than to wait 2 weeks for a team of ghosts.