Top 10 Most Common Sources of Home Leaks in DuPage County

Living in Northeastern Illinois means dealing with everything from heavy summer thunderstorms to harsh winters and ice storms. While these seasonal extremes make life interesting, they can also wreak havoc on your home. The most common headache for homeowners in DuPage County and surrounding areas? Leaks.

Water leaks, whether they’re slow drips or sudden gushers, can lead to costly damage if not caught early. Here are the top 10 sources of leaks we see most often at Storm Guard of DuPage—and what you can do to stay ahead of them.

Roof Damage: Shingles, Flashing & Underlayment

High winds, hail, or simply old age can loosen shingles or crack flashing around chimneys, vents, and skylights. Over time, water works its way under the roof and into your attic or walls.

Pro tip: Look for missing or curled shingles, or dark water stains in the attic after heavy rain.  Locate potential leaks before they become a problem by calling Storm Guard of DuPage for a FREE roof inspection!

Ice Dams

When heat escapes through your attic, it melts the snow on your roof, which refreezes near the eaves. This creates a dam that pushes water back under your shingles.

Pro tip: Check for thick ridges of ice along your roofline after a snowfall—this is a red flag.  Make sure that your intake (soffit) vents and your exhaust vents near the top of your roof are not obstructed.

Clogged or Damaged Gutters & Downspouts

When gutters can’t drain, water spills over, pooling near your foundation or backing up onto your roof.

Pro tip: Make sure that your gutters are in good condition, and not damaged or clogged.  Clean your gutters each spring and fall—or install gutter guards in Dupage to reduce buildup.

Foundation Cracks & Basement Seepage

Illinois’ clay-heavy soil holds water, which increases pressure against your foundation. Over time, cracks form, letting in water during heavy rain or snowmelt.  Left unrepaired, these cracks can hold moisture which can freeze in the winter, making the cracks worse with each passing season.

Pro tip: Walk your basement during storms—small puddles or damp spots near walls could mean trouble.  Make sure to properly seal cracks immediately.

Leaky Windows & Doors

Failed caulk, cracked frames, or old seals can let rain in during storms, sometimes unnoticed until water damage appears.

Pro tip: Inspect the caulking every year and replace weatherstripping as needed.

Plumbing Failures

Frozen or burst pipes, leaky fixtures, or aging water heaters can flood your home in a hurry.  Exterior hose bibs, left unprotected in the winter can burst pipes inside your basement, and you may not know until Spring.

Pro tip: During cold snaps, keep faucets dripping and cabinets open to prevent frozen pipes.  On the outside, drain your hose attachments and cover bibs with rags and an insulating cup for the winter.

Damaged Siding

High winds and hail can crack or loosen siding, allowing rain to seep into walls.

Pro tip: After storms, walk around your home and look for cracks, gaps, or missing siding.

Chimney Leaks

Cracked mortar, deteriorated caps, or loose flashing around chimneys are a common source of leaks in older homes.

Pro tip: Schedule a chimney inspection before winter hits.

Flat or Low-Slope Roof Leaks

Poor drainage or worn-out membranes on flat roofs can lead to pooling water and eventual leaks.

Pro tip: Make sure your flat roof drains are clear.  Have your flat roof professionally inspected each year.  Call Storm Guard of DuPage for your FREE inspection.

Skylight & Roof Vent Leaks

Improper installation or aging seals can let water seep in around these roof penetrations.

Pro tip: Check for water stains on ceilings near skylights or vents after heavy storms.

Final Thoughts

Catching leaks early can save you thousands in repairs. At Storm Guard of DuPage, we specialize in roofing, siding, gutters, windows, and exterior restoration services designed to protect homes from Northern Illinois weather. Whether it’s a minor repair or a full inspection, our team can help keep your home safe and dry.

Think you might have a leak? Contact us today for a FREE 50 Point inspection and peace of mind before the next storm hits.

We serve homeowners in Westmont, Darien, Lisle, Glen Ellyn, Villa Park, and beyond. Contact us today for FREE exterior inspections.

Storm Guard of DuPage – Your Trusted Local Roofing Contractor in DuPage County

825 N. Cass Avenue
Westmont, IL 60559
(630) 812-1716