Flashing, Chimney & Skylight Repair in Joliet, IL

Flashing, Chimney & Skylight Repair in Joliet: Where Old Roofs Actually Leak

When Joliet homeowners call about a stain on the ceiling, the culprit is almost never the field of the roof. It is the Flashing, Chimney & Skylight Repair in Joliet detail that failed, the bent metal and sealant that ties your roof to a brick chimney, a skylight curb, a dormer wall, or a valley. On the steep gabled and mansard roofs of the Cathedral Area and along Ottawa Street, those transitions sit on 1870s to 1910s limestone and brick walls that have moved, settled, and pulled away from the metal over a century.

We fabricate flashing in-house and bend it to the actual dimensions of your chimney or curb, not to a stock size. That matters on the compact workers' cottages and bungalows on the older east and west sides, where a 6-inch chase and a 30-inch chase sit three blocks apart. If water is already inside, start with our metal roof leak repair page and we will trace it to the source before anyone touches a panel.

Why Flashing Fails Faster on Joliet Roofs Than Most Homeowners Expect

Will County weather works flashing hard. Heavy winter snow sits on low-slope porch roofs and behind chimneys, then ice dams push meltwater sideways under the metal. Deep freeze-thaw cycles open the sealant bead, spring hail dents the step flashing, and derecho winds peel a loose counterflashing edge. Add the clay soil and flat glacial plain under the Des Plaines River corridor, and you get foundation and masonry movement that widens the gap between chimney and roof.

The failure modes we see most in Joliet are specific:

• Step flashing rusted through where it meets brick on Cathedral Area Victorians, letting water track down the chimney face.
• Skylight curb flashing sealed with caulk instead of metal, cracked after one winter of ice damming on 1980s Shorewood and New Lenox two-stories.
• Valley metal on steep gabled roofs that has worn thin or been patched with roof cement by a previous owner.
• Dormer and wall transitions on Cape Cods and split-levels in Inwood and Crest Hill where the headwall flashing was never replaced during a re-roof.
• Counterflashing cut into mortar that has pulled free as the limestone or brick spalled.

Every one of these is a metal detail, and every one is fixable without tearing off a sound roof.

Key info: On a 1900s brick bungalow near the old I&M Canal, we pulled a skylight that had been leaking for two seasons. The curb was fine. The installer had run step flashing flat against the brick instead of cutting a reglet, so water ran behind it. We cut a new reglet, bent copper counterflashing, and the leak stopped without replacing a single panel.

Roofing permits are commonly required for replacement and re-roof work in Joliet, and thresholds vary by jurisdiction, so confirm scope with the City of Joliet building department before work starts.

How We Trace and Rebuild a Leaking Flashing Detail in Joliet

We do not guess at a leak. Water enters at one point and shows up at another, so we work from the inside stain back to the exterior detail and confirm it with a controlled water test where conditions allow. On steep mansard and Queen Anne roofs, that means safe access from a ladder and roof anchors, not walking a 12/12 pitch in November.

1. We inspect the chimney, skylight, valley, and dormer details and photograph each one before quoting.
2. We remove the failed flashing and the old sealant down to sound substrate, brick, or sheathing.
3. We measure the actual chase or curb and bend new flashing in-house from the correct gauge and metal for the roof.
4. We cut a reglet into masonry where the detail calls for it and set counterflashing into the cut, not on top of it.
5. We integrate the new metal with the existing panels or shingles and seal only the terminations that require sealant.
6. We water-test the repair and photograph the finished detail for your records.

If the flashing sits on a metal roof system, we also check fastener condition while we are up there. Loose or backed-out screws at the detail are a common companion problem, and our screw replacement and re-fastening service handles that in the same visit.

Key info: A 1990s two-story in Plainfield had a skylight leaking into the kitchen ceiling every spring. The curb flashing was aluminum in contact with treated lumber, and it had corroded to lace. We bent a new curb cap and pan from 24-gauge steel with a separation membrane, and the ceiling has stayed dry through two hail seasons.

Flashing Repair Approaches We Use on Joliet Roofs

The right method depends on the roof material, the masonry condition, and how much of the detail has failed. Here is how we match the approach to the job.

We choose the least invasive approach that actually stops the water, because tearing into a sound roof to fix one detail creates new problems.

Flashing, Chimney & Skylight Repair Cost in Joliet: What to Expect

Most flashing repairs in Joliet start at From $600 for a single straightforward detail, such as a chimney step flashing replacement or a skylight curb reseal with new metal. That figure covers access, removal of the failed metal, in-house fabrication of the replacement, installation, and a water test. It is a starting point, not a flat rate.

Cost moves with the scope of the detail and the access. A chimney on a steep mansard roof in the Cathedral Area takes more setup than a curb on a low-slope porch roof in Rockdale. Masonry condition matters too: a reglet cut into sound brick is quick, while spalled limestone may need repointing before new counterflashing goes in. Skylight curb rebuilds and valley replacements run higher because more roof has to be opened and re-integrated.

Get two or three written estimates and compare the scope line by line, not just the total. A quote that does not name the flashing material, gauge, and whether a reglet will be cut is not a comparable quote. You can see how we structure line items on our pricing page.

Flashing, Chimney & Skylight Repair Near Me: How to Vet a Contractor Near Joliet

Flashing work is detail work, and detail work is where unqualified crews cut corners. Ask for the license and insurance certificate before anyone climbs a ladder, and confirm the policy covers roofing work, not just general handyman activity. Call two recent references and ask specifically whether the leak came back after the first hard rain.

Ask who bends the metal. A crew that orders a stock chimney flashing kit and caulks the gaps is not doing flashing repair, they are sealing a problem that will return. Ask whether they will cut a reglet into your brick or limestone, and ask how they will protect the masonry if they do. On homes in historic districts or under HOA design review, confirm that the flashing material and finish are allowed before the work is scheduled. When you are ready to talk scope, reach us through the contact page and we will set a time to look at the actual detail.

A contractor who cannot explain the difference between step flashing and counterflashing, or who quotes a price without seeing the chimney, is telling you something. Listen to it.

Flashing, Chimney & Skylight Repair in Joliet: Pricing Guide

Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (815) 600-7191.