Markham roof leak contractors

6 licensed roofing contractors are based in Markham. See Markham's rain and storm numbers below, then the list of local companies.

Licenses checked September 30, 2026 · Illinois Department of Financial and Professional Regulation

42.1 innormal precipitation a year

Rainfall in Markham

Markham averages 42.1 inches of rain a year, per NOAA's 1991-2020 climate normals.

June is typically the wettest single month, averaging 4.9 inches on its own.

That's the stretch of the year a small, contained leak in Markham tends to turn into a stain worth calling about.

FEMA rates both hurricane risk (Very Low) and wind risk (Very High) for the county that includes Markham.

Either one is a common trigger for a sudden new Markham leak rather than a slow, years-long one.

If a Markham leak shows up right after a storm, start with flashing and shingle edges before assuming the worst.

Alphabetical by business name, nothing more. Speed and quality aren't part of the sort.

Can you find the actual source before you quote a repair, not just patch where the ceiling is wet?
Is this a contained repair, or does it point to a bigger problem with the roof?
Will you check the attic and insulation for existing water damage, not just the roof surface?
What's your timeline if it's actively raining versus once it's dry?
Do you offer a temporary tarp while a full repair is scheduled?
What's covered by a workmanship warranty on the repair itself?