Water travels. The drip on your ceiling is rarely directly below the hole in the roof — especially in Chicago's brick buildings where water runs sideways behind parapets and down inside cavity walls. We use moisture meters, infrared, and decades of building knowledge to find leaks others miss.
At The Chicago Roofers, leak detection is one of our core specialties. Chicago is unlike any other roofing market in the country — a city built on a mix of 1890s greystones, 1920s bungalows, mid-century brick two-flats, modern infill, and dense commercial corridors, all sitting in a climate that swings from 95°F summer humidity to -20°F winter wind chills. A roofing contractor who treats Chicago the same as a suburban tract neighborhood will miss the details that actually keep water out of these buildings. We don't. Every leak detection project we take on is scoped, priced, and executed around the specific building era, roof geometry, and microclimate of the property in front of us.
What's Included
- Interior and exterior moisture mapping
- Infrared scanning on flat roofs
- Water test isolation
- Written diagnosis with repair recommendation
Why It Matters in Chicago
Chicago's masonry buildings, parapet walls, and cavity construction make leak tracking a specialty. We've found leaks that originated 20 feet from where they showed up inside.
Chicago's combination of lake-effect moisture, sustained winter freeze cycles, and aggressive summer storm patterns means that roofing problems that would take a decade to develop in a milder climate can show up in three or four years here. That's why our approach to leak detectionis built around durability-first detailing — heavier ice-and-water shield coverage, properly terminated parapet flashings, balanced attic ventilation, and material specifications that exceed code minimums in the spots that matter most.
Materials & Systems We Use
For Chicago leak detection projects, we work exclusively with established, manufacturer-backed systems: architectural asphalt shingles from GAF, Owens Corning, and CertainTeed; standing-seam and stone-coated metal panels rated for Chicago wind zones; EPDM, TPO, and PVC single-ply membranes for flat assemblies; and SBS-modified bitumen where torch-down or self-adhered low-slope systems make sense. We carry manufacturer certifications that unlock extended warranties most contractors can't offer, and we register every warranty in the property owner's name so it transfers cleanly at sale.
Chicago Code, Permits & Inspections
Any meaningful roofing scope in Chicago triggers a Department of Buildings permit. We pull the permit in our name, post it at the property, coordinate the inspector visit, and close the permit when work is complete — a step that protects you when you sell. For landmark districts, designated historic properties, and HOA-governed buildings, we navigate the extra approval layer so your project doesn't get red-tagged. Our crews work to the most recent Chicago energy and building code revisions, including reflectivity requirements on low-slope roofs and ventilation balance rules on steep-slope assemblies.
Our Process
- 1
Interior review
Where, when, and how much — we map the symptom pattern.
- 2
Roof investigation
We work uphill from the stain until we find the entry point.
- 3
Confirm
Where needed, we run a controlled water test to confirm before repair.
What to Expect on Project Day
Crews arrive between 7 and 8 a.m. with a project lead who walks you through the day's plan, protects landscaping and the building exterior with tarps and plywood, and stages dumpsters and materials with the smallest practical street footprint — a real concern on narrow Chicago lots and tight alley access. Magnetic nail sweeps run multiple times per day, every day, including final cleanup. We leave the property cleaner than we found it.
Across Every Chicago Neighborhood
We provide leak detection in every Chicago neighborhood — from the dense flat-roof corridors of Logan Square and Pilsen, to the bungalow belts of Portage Park and Chatham, to the lakefront high-rises of Edgewater. Local building stock, microclimate, and even prevailing wind direction all change how we approach the work.
Frequently Asked Questions
What if you can't find the leak?
Rare, but if we can't confirm a source we don't charge for the diagnosis — only for any test or repair work performed.