Before you sign anything
After every big hailstorm, the knocking starts.
After a major hailstorm, out-of-town roofing operators follow the damage into Calgary, work the season, and move on to the next storm. Workmanship problems tend to surface years later, and by then those companies are gone. Most of them offer a free inspection, and an inspection that exists to open a sale has a built-in reason to find damage. That's why we charge for our hail assessment: the report answers to you, not to a sale. If your roof is fine, that's what it says.
You don't have to trust anyone's pitch, including ours. Run this list on every roofer at your door. The full guide is here:how to spot a storm chaser.