North Texas storms cause severe water damage because they stack several threats into one short event: hail that breaks roofing, wind that drives rain sideways into walls, and rainfall rates that overwhelm gutters, streets and creeks. In Denton County, a 30 minute spring storm can do all three. The water that gets in often hides in attics and wall cavities, so the damage keeps growing after the sky clears.
Here is why our storms hit so hard, how water actually gets inside, and what to check in the days after a storm.
Why storms in Denton County are so intense
North Texas sits where warm, humid air from the Gulf of Mexico meets dry air from the west and cooler fronts from the north. In spring, that setup produces supercell thunderstorms, the rotating storms that make large hail and damaging wind. By the time a storm line reaches the I-35 corridor, it is often at full strength.
The numbers back this up. Storm report data for the Denton area since 2004 shows April with the most hail reports, followed by May, then March and June. Recent examples close to home include 2.75 inch hail in Bartonville on March 14, 2024 and 2.5 inch hail near Argyle on April 1, 2024. For reference, the National Weather Service calls hail severe at 1 inch, about the size of a quarter.
Rain is the other half. At DFW, May is the wettest month on average at 4.78 inches, and October is second at 4.37 inches. In May 2015, DFW recorded 16.96 inches, the wettest month on record, and October 2018 brought 15.66 inches. When that much rain falls on clay soil that is already soaked, it runs off fast instead of soaking in.
How storm water actually gets into a house
Most storm water damage does not come through a hole you can see from the street. It comes through small openings that the storm created or widened.
| Storm threat | How water gets in | Where the damage hides |
|---|---|---|
| Large hail | Cracked or bruised shingles, dented flashing, broken skylights and vent caps | Attic insulation, top floor ceilings, roof decking |
| Straight-line wind | Lifted shingle edges, torn ridge caps, fallen limbs puncturing the roof | Attic, ceilings, exterior walls near the damage |
| Wind-driven rain | Pushed around window frames, door thresholds, siding joints and brick weep holes | Inside exterior walls, window sills, baseboards |
| Extreme rainfall | Overflowing gutters, water pooling at the slab, backed-up yard drains | Flooring along exterior walls, carpet pad, garage |
| Flash flooding | Surface water entering under doors or through garage entries | Everything at floor level; treated as Category 3 water |
| Power outage | AC and dehumidification stop, humidity climbs indoors | Speeds up mold growth on anything already wet |
Hail damage leaks late
Hail rarely causes a leak during the storm itself. A bruised shingle loses granules and cracks over the following weeks. The leak shows up during the next heavy rain, often as a small ceiling stain that is easy to ignore. By then, the attic insulation below may have been soaking up water for a while.
Wind-driven rain fills wall cavities
Normal rain falls mostly straight down, and a house is built to shed it. Strong wind pushes rain horizontally and even upward, into places that are only designed to stay dry in calm weather. Water gets behind siding, around window frames and through gaps in brick. It collects inside the wall, soaks the bottom of the drywall and the sill plate, and often shows up only as swollen baseboards or peeling paint days later.
Clay soil and fast runoff
Much of Denton County has clay soils that swell when wet and shrink during dry periods. After a dry stretch, the ground can crack, and the first heavy storm sends water toward the foundation. Once the soil is saturated, it stops absorbing water, so more rain becomes runoff. That is when water pools against the slab and finds its way under door thresholds and into garages.
Why attics make storm damage worse here
Many North Texas homes put the air handler, ductwork and sometimes the water heater in the attic. When a roof leaks, the water lands on blown-in insulation, which holds moisture like a sponge and presses down on the drywall ceiling. Wet insulation loses its value and can grow mold if it stays wet. A ceiling that sags or bulges is holding water and can fall without warning.
Attic ducts can also carry moisture and odor into rooms far from the leak. That is why a proper storm inspection includes the attic, not just the rooms with visible stains.
What to check in the first few days after a storm
- Walk the outside first. Look for missing shingles, dented gutters and vents, broken windows, and limbs on the roof. Stay off the roof yourself.
- Check the attic with a flashlight. Look for wet or matted insulation, dark spots on the decking, and water on top of the air handler.
- Look at ceilings in every room. New rings or bubbling paint mean water is above.
- Check exterior walls from inside. Feel baseboards and window sills, and look for swelling or loose caulk.
- Check the garage and entry doors. Water under doors often soaks the carpet pad in the next room.
- Photograph everything. Date-stamped photos of the roof, hail on the ground and interior damage help your claim.
- Get a temporary cover on any opening. Your policy usually expects you to prevent further damage, such as tarping a roof.
Stay out of rooms with a sagging ceiling, keep away from downed power lines, and do not walk through standing water near outlets or cords. If water is near the breaker panel, leave the power alone and call an electrician or the utility.
Storm damage and insurance in Texas
Most homeowners policies cover water that gets in through an opening created by wind or hail, such as a hail-damaged roof. Many Texas policies use a separate wind and hail deductible, often a percentage of your dwelling coverage instead of a flat dollar amount, so check your declarations page before you assume how much you will pay.
Rising floodwater is different. Homeowners policies exclude it, and only a flood policy through the NFIP or a private carrier covers it. You can run your situation through our insurance claim coverage estimator for a rough idea of what may be covered and what your deductible means in dollars.
Documentation matters with storm claims because adjusters are busy after a big event. Moisture readings, photos and daily drying logs from the first visit show exactly what the storm did and what was done to stop it from getting worse.
How restoration fits in after a storm
Storm recovery usually has three parts: stop more water from getting in, dry what is already wet, and repair. Our storm damage restoration crews handle tarping and board-up, then move into water mitigation: extraction, moisture mapping with meters and thermal imaging, and drying with LGR dehumidifiers and air movers until readings reach dry standard. After that, we can handle the rebuild or work alongside your roofer.
If you live on the west side of the county, where some of the largest recent hail fell, our Argyle water damage restoration page covers local details. For a month by month view of what to expect, see our guide to water damage risks during Texas storm season.
Frequently asked questions
Why do roof leaks show up weeks after a hailstorm?
Hail often bruises shingles without making a visible hole. The damaged area loses granules and cracks over time, so the leak appears during a later rain, not the storm that caused it.
Can wind-driven rain damage a house with no roof damage?
Yes. Strong wind pushes rain around windows, doors, siding and brick weep holes. The water collects inside exterior walls and may only show up as swollen baseboards or peeling paint.
When is hail season in Denton County?
Spring is the peak. Local storm reports since 2004 show the most hail in April and May, with March and June also active. Hail can still happen in fall, but it is less common.
Should I wait for the adjuster before drying my house?
No. Most policies require you to prevent further damage. Take photos and video first, then start mitigation. Keep records of the work so the adjuster can see what was wet and what was done.
Is it safe to stay in a house with a wet ceiling?
Stay out from under any ceiling that sags or bulges, because it can collapse. A flat stain is less urgent, but it still means water is above and should be checked soon.
If a storm has put water into your Denton County home, call (940) 274-9880. Our dispatcher answers 24/7, and we can get a crew out to tarp, extract and start drying before the damage spreads.
