Updated October 2026
Irvine storm and flood water damage is handled as Category 3, because water that crossed soil, pavement and landscaping carries contamination that clean leak water does not. Soaked carpet, pad and the lower drywall usually come out. Tile, framing and slab are cleaned, treated and dried. Mud gets shoveled and washed out before any drying equipment goes in.
Signs Storm Water Got Farther Than You Think
- Dark line on drywallA tide mark above the baseboard shows how high water wicked.
- Silt along baseboardsFine dirt at the wall line means outside water ran there.
- Musty smell next dayWet pad and drywall start to smell within a day or two.
- Carpet wet near doorsA damp strip by a slider means water passed the threshold.
Cleaning Up After Storm Water
- Check for electrical riskBreakers for wet rooms stay off until outlets and cords are checked.
- Remove solids and waterMud is shoveled out first, then standing water is extracted.
- Strip porous materialsCarpet, pad and wicked drywall come out and get bagged.
- Clean and treatSlab, framing and remaining surfaces are washed and treated with an antimicrobial.
- Dry and documentEquipment runs until readings match the dry standard, and entry points are photographed.
When Water Comes In From Outside
Rain intrusion looks different from a pipe leak. It enters at the lowest point, usually a door threshold, a garage slab or a wall that sits below the grade outside, then spreads across the floor. It carries silt, fertilizer and whatever was on the driveway, so we don't try to dry carpet or pad in place after a storm.
Timing matters as much as the water itself. Storms tend to arrive in clusters, so a room that got wet on Monday can take more water on Wednesday. We dry with that in mind, and when the entry point is the roof rather than the ground, our roof leak water damage page covers the ceiling side.
Three Ways Storm Water Gets Inside
Rain Intrusion at Doors and Slab Edges
Sliding doors, French doors and garage entries sit right at the slab line, and wind-driven rain pushes past worn sweeps and clogged weep channels. You notice a wet strip of carpet inside the door or water creeping along the baseboard. We extract, pull the wet pad and check the drywall up from the floor. The tack strip near the door often has to be replaced. If water came through the wall at the slab edge, we meter along the whole wall, not just the wet spot.
Mud and Debris Cleanup
When runoff carries soil, the job starts with a shovel, not a fan. Mud that's left in place keeps the floor wet and grows bacteria quickly. We remove solids, bag soaked carpet and pad, and wash hard floors and the lower walls. Drywall that wicked muddy water comes out in a flood cut above the stain line. Framing and slab get cleaned, treated with an antimicrobial and dried. Garages often hold the worst of it, along with stored boxes that sat in the water.
Canyon and Hillside Runoff
Homes below a slope, or at the bottom of a sloped street, collect runoff that fills yards and pushes toward the house. Clogged area drains and a grade that tilts toward the foundation make it worse. Inside, the water usually shows up along the uphill wall first. We clean out mud, cut and dry the wet walls, and note where water came in so you can raise it with a drainage contractor or your HOA. Interior work can't fix grading, but it can show where to look.
Irvine Rain Arrives in a Few Hard Storms
Under NOAA 1991-2020 normals, the Irvine Ranch station averages about 13.06 inches of rain a year, and February (3.47 in), January (2.67 in) and December (2.34 in) are the wettest months. That's not much rain overall, but it falls in a few winter storms on ground that is dry most of the year. On December 14, 2021, a flash flood warning covered central Orange County, including Irvine, with expected rain of 0.5 to 1 inch per hour. Most of our storm calls come in those same winter months.
Before and After the Next Big Storm
A few steps cut the odds of another intrusion.
- Clear leaves and dirt from area drains and slider weep channels.
- Check door sweeps and thresholds for gaps you can see light through.
- Keep garage storage on shelves, not on the slab.
- Photograph any water entry point while it is still wet.
- Shut off breakers for wet rooms before you start cleaning up.
What Changes the Cost of Storm Cleanup
Storm losses usually cost more per square foot than a clean leak, because porous materials come out instead of drying in place. Mud removal, antimicrobial treatment and disposal add labor. The size of the wet area and the IICRC class of the loss, which reflects how much water porous materials absorbed, set the rest.
- Square footage of floor reached by water
- Mud and debris removal before drying
- Carpet, pad and drywall that must come out
- Antimicrobial cleaning of framing and slab
- Garage contents that sat in the water
Water damage by class: Class 1 $150 to $400; Class 2 $500 to $1,000; Class 3 $1,000 to $3,000; Class 4 $20,000 to $100,000. Source: HomeAdvisor, Updated Jun 17, 2026.
Water damage restoration (overall): Normal Range: $1,383 to $6,369 (average $3,868; full span $450 to $16,000). Source: HomeAdvisor, Updated Jun 17, 2026.
These are published planning ranges from cost guides, not our prices. Your scope comes from the moisture map.
Questions about storm & flood water damage
Usually it can't. Outside water carries soil and bacteria into the pad and backing, so we remove both. Some area rugs can go out for professional cleaning.
It depends on the policy and how the water got in. Surface flooding is often treated differently from wind-driven rain or a roof opening, so read your policy and call your carrier. Our guide on whether insurance covers water damage is general information, not advice.
Drywall wicks water upward past the visible line, and outside water leaves contamination inside the paper. That's why we cut above the highest wet reading.
If water has already come in once, sandbags or a door dam help while the threshold is repaired. Clear area drains before the rain.
Wear boots and gloves, and keep out of any room where water reached outlets until breakers are off. Wash hands after handling anything that sat in it.
Yes, as long as water is no longer coming in. We keep windows closed and let the dehumidifiers manage humidity.