Find where your Cortland roof is leaking

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

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

37.3 innormal precipitation a year

Rainfall in Cortland

Normal annual precipitation near Cortland runs 37.3 inches, according to federal climate data.

A roof that's held up fine through a dry stretch can still fail once Cortland hits its wettest weeks in May.

That seasonal jump is worth keeping in mind if a leak in Cortland seems to appear out of nowhere.

FEMA rates both hurricane risk (Very Low) and wind risk (Relatively Moderate) for the county that includes Cortland.

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

If a Cortland 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?