What emergency roofing covers
Emergency roofing is the after-hours or same-day response when something has already gone wrong: a wind-lifted shingle section after a squall off Lake Ontario, a tree branch through the decking, ice damming backing water up under shingles in January, or a leak that starts dripping into a bedroom ceiling at 11pm. The immediate job is almost always to stop water getting further into the building, usually with a tarp, emergency flashing, or temporary patch, followed by a proper repair once daylight and materials allow. This category lists 57 Mississauga roofing companies that advertise round-the-clock or same-day emergency response for these situations.
What to check before you call
Ask about actual response time (some crews promise arrival within a few hours, others next business day), whether the callout fee is separate from repair cost, and whether they're licensed and carry liability insurance, since a botched tarp job can void a home insurance claim. Get a written estimate before permanent repair work starts, not just the emergency stabilization.
How our ranking helps
Our scoring weighs licensing, insurance, and review consistency across all 57 listed contractors. For the full ranked comparison, see the best roofing contractors in Mississauga guide, and read our methodology for how we score and verify each listing.