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After a Wet September: A Chicagoland Fall Roof, Gutter, and Drainage Check
By Supreme Building Group | Updated October 2, 2026
September was wetter than normal at Chicago’s official climate site. NWS Chicago’s September 2026 climate summary reports 3.70 inches of precipitation at Chicago O’Hare, 0.51 inch above normal. Rainfall varied across Chicagoland, and a regional total does not prove that any particular property was damaged. It does, however, make early October a sensible time to review how a home’s exterior handled repeated rain.
The NWS Chicago forecast discussion on October 2 described the start of an extended drier, seasonable stretch after the latest rain moved east. A dry window is useful for a safe ground-level walkaround, photographs, and scheduling any closer inspection before colder weather. This checklist is construction and maintenance guidance—not a diagnosis of storm damage or a statement about insurance coverage.
1. Start with a safe ground-level walkaround
Wait until walking surfaces are dry and there is good daylight. Begin at the street or driveway, then walk each accessible side of the property. Do not climb onto a roof to complete this checklist. Binoculars or a phone camera with zoom can help you record roofline conditions from the ground.
• Photograph each elevation before zooming in on a concern.
• Note the date, location, and what changed since your last inspection.
• Keep away from downed wires, unstable branches, wet electrical equipment, and visibly loose building materials.
The U.S. Consumer Product Safety Commission’s outdoor-repair safety checklist warns that ladder falls can cause serious injury and stresses stable ground, a helper, and distance from power lines. If access requires a ladder, steep roof, or wet surface, use a qualified professional.
2. Review the roofline without guessing at the cause
From the ground, look for shingles that appear missing, displaced, lifted, folded, or out of alignment. Also note branches resting on the roof, visibly open flashing, loose ridge material, or a roof edge that looks different from neighboring sections.
A photograph can document a visible condition, but it usually cannot establish when or why the condition occurred. Age, installation, heat, foot traffic, wind, and other factors can produce similar-looking symptoms. Record what you can see and leave cause determination to a closer inspection supported by context.
If you see an opening or active interior water entry, treat it as a time-sensitive construction issue. Our Chicagoland emergency roof-tarping page explains temporary protection options; temporary mitigation is not the same as a permanent repair.
3. Check gutters, downspouts, and discharge points
Gutters and downspouts are a water-management system, not just trim. Look for sagging runs, separated seams, loose end caps, stained fascia, pulled fasteners, disconnected elbows, and splash marks below a gutter edge. At ground level, confirm that each downspout extension remains connected and directs water toward a safe discharge area rather than a foundation corner or obvious low spot.
The U.S. Department of Energy’s guidance on foundations, gutters, and downspouts explains that roof runoff can rapidly saturate soil around a building when it is not carried away. Local conditions and codes vary, so avoid making major grade or drainage changes without understanding where the water will go.
Photograph erosion channels, displaced mulch, recurring puddles, or soil splash before resetting an extension. Those details can help distinguish a one-time blockage from a drainage pattern that needs a more complete correction.
4. Inspect siding, trim, soffits, and exterior penetrations
Walk each wall and look for panels that are loose, bowed, cracked, or out of alignment. Check corner posts, utility penetrations, hose bibs, vents, light fixtures, and the transitions where siding meets windows, doors, masonry, or roofing.
Also look for open sealant joints, peeling finishes, swollen wood, dark staining, or gaps at soffits and fascia. Do not label a mark as hail, wind, or water damage based on appearance alone. Record its location and surrounding context so a contractor can evaluate the assembly rather than only the close-up.
5. Review doors, windows, and low wall areas
Repeated rain can reveal weak points away from the main roof surface. Look for new staining below windows, damp trim, peeling paint, failed weatherstripping, and gaps where exterior finishes meet frames. At garages, additions, and low-slope roof transitions, check the accessible interior side for moisture or staining.
Sealant is not a universal repair. Some joints are designed to drain or move, and sealing the wrong opening can trap water. If the correct detail is unclear, document it before applying caulk.
6. Look for attic and interior warning signs
Only enter an attic if access is stable, clear, and safe. From the access point, use a flashlight to look for new staining, damp insulation, water trails, musty odors, or visibly darkened roof decking. Do not step on ceiling drywall, disturb suspect insulation, or touch wet wiring.
ENERGY STAR’s attic guidance identifies wet or damp insulation and moldy or rotted rafters or joists as conditions that should be addressed before routine insulation work. A stain does not automatically identify the entry point; water can travel along framing before it becomes visible.
7. Make a simple photo baseline before winter
A consistent photo set is more useful than dozens of disconnected close-ups. For each concern, take one wide image showing the side of the house, one medium image showing the building component, and one close image showing the condition. Keep original files and note the date.
Repeat a few of the same wide photos each season. That gives you a real comparison point for roof edges, siding alignment, gutter position, drainage, and trim—without relying on memory after a future storm.
8. Prioritize what to address first
Use a construction-first order rather than trying to fix everything at once:
• Active leaks, exposed openings, unstable materials, and electrical hazards come first.
• Next, address conditions that direct water toward the building, including disconnected downspouts, overflowing gutters, and obvious drainage problems.
• Then evaluate gaps, loose components, failed sealants, and moisture signs that can worsen through freeze-thaw cycles.
• Cosmetic items and routine cleaning can follow after water-entry and safety concerns are understood.
When a contractor inspection is useful
A contractor can document observable roof, siding, gutter, trim, and drainage conditions; explain repair methods; and prepare a construction scope. A contractor should not promise that a particular condition is covered by insurance or determine policy coverage.
For examples of the inspection process, visit our Naperville roof, siding, and gutter inspection page or our Crystal Lake storm inspection page. You can also review our broader storm-damage restoration services.
Request a straightforward exterior inspection
If your fall walkaround finds a displaced roof component, recurring gutter overflow, loose siding, active water entry, or attic moisture you cannot trace, call Supreme Building Group at (224) 735-4245 or request an inspection online. We will focus on visible construction conditions and practical repair priorities.
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