Water in your Mansfield home? Shut off the main valve, then call, any hour.

What should you do first when water is spreading in a Mansfield house?

Close the main shut-off, then keep people and pets out of standing water that touches outlets, cords or appliances. Photograph the damage before anything is moved, lift small items off wet floors, and call. Turn off power to the wet area only if the panel is dry and you can reach it safely.

Find the shut-off before you need it. In many North Texas homes the main is at a ground-level box near the street or a valve where the line enters the house, and it is worth turning it once a year so you know it still moves. If you cannot find it, call your water provider, and call us while you do.

For a leak from the attic, close the valve on the water heater or switch off the air conditioner at the thermostat, and stay out from under a sagging ceiling. Wet drywall and insulation are heavy, and a ceiling can let go all at once.

• Stop the source: the main for a split line, the cold-water valve on the heater, the supply valve behind a washer or toilet.
• Stay safe: no standing water near outlets, extension cords or the garage freezer.
• Document: photos and short video of every wet room before anything is moved.
• Lift and clear: rugs, books, shoes and electronics off wet floors.
• Call your insurer early: coverage is decided by your policy, and the crew can give you readings and photos for it.

Why does a leak on a slab spread so far, so fast?

A slab-on-grade house has no basement to drain into, so water spreads across the floor, soaks into the base of the walls and runs under flooring in the next room. A burst line that runs for an hour in a closed house can wet far more area than the first puddle shows.

Laminate, engineered wood and carpet pad all hold water against the concrete, and baseboards and the bottom of drywall wick it upward. What looks like a dry wall can read wet at the plate, which is why the crew meters the bottom two feet of every wall near the leak, not only the visible stain.

Under-the-slab leaks are a different case. A warm spot on the floor, a water meter that keeps turning with everything off, or the sound of running water can point to a slab leak, and the pipe repair belongs to a licensed plumber. The slab leak water damage page covers what happens to the flooring, the wall bases and the soil moisture around it, and the guide on slab leaks in North Texas homes explains who handles which part.

Why do attic water heaters and AC drain pans cause so many ceiling stains?

In many slab homes the water heater and the air handler sit in the attic, directly above the ceilings people live under. A failing tank, a clogged condensate drain line or an overflowing drain pan drips onto insulation and drywall for days before a stain shows, so the damage is usually wider than the spot.

Texas summers keep the air conditioner running for months, and a condensate line that clogs with algae or debris sends water into the drain pan and then over its edge. Shutting off the A/C stops the supply of water, and an A/C contractor clears the line. The crew removes wet insulation, opens the ceiling where needed and dries the cavity.

A leaking tank is the plumber's job to replace. The water heater leak cleanup page and the AC condensate leak page go through what is dried and what is handed to the right trade. For the longer version, read the guide on attic water heater and AC leaks.

How is creek or storm water different from water from a pipe?

Water that comes in from outside, such as creek overflow or runoff, is treated as Category 3 (grossly contaminated), while a broken supply line starts as Category 1 (clean). The category changes what is cleaned, what is thrown away and what insurance may cover, because a standard homeowners policy often excludes flood.

Walnut Creek runs through Mansfield, the same creek that powered the town's first steam gristmill in 1857, and the National Weather Service in Fort Worth keeps a river gage on it near Mansfield, and the agency lowered that gage's flood-stage levels after surveying flood impacts upstream and downstream. Joe Pool Lake, built by the U.S. Army Corps of Engineers for flood control on the Mountain and Walnut Creek watershed, touches the city limits.

None of that means every heavy rain floods a house, and no particular street is named here. It means that if water comes in from outside, the first questions are about contamination and about whether flood coverage exists. Read the page on flood damage cleanup before you call your insurer.

What does the crew do after it arrives?

The technician finds where the water went with moisture meters and thermal tools, extracts standing water, removes materials that cannot be dried, and sets air movers and dehumidifiers. Readings are taken again on each visit until the structure reaches its dry goal, and then the repair is quoted.

Wet carpet pad is usually removed because it holds water against the slab, and wet insulation in an attic or ceiling is often removed rather than dried. Drywall may be cut out a couple of feet up the wall when the readings show the cavity will not dry in place. The crew explains each step and the cost before doing it.

Humid weather slows evaporation, so a dehumidifier does more of the work than the fans. See the page on structural drying for how readings, equipment and dry goals fit together.

Why does Texas keep mold assessors and mold removers apart?

Texas licenses mold assessors and mold remediators separately through the Texas Department of Licensing and Regulation, and one license holder may not do both on the same project. On jobs of 25 contiguous square feet or more, expect two separate companies: one writes the protocol, the other carries it out.

The rule exists to keep the person who finds the problem from profiting by exaggerating it. Texas set up its mold licensing in 2003, reportedly after a well-known insurance verdict exposed those conflicts. Under the law, a license is not required for remediation of less than 25 contiguous square feet.

This site does not offer mold testing and removal as one package, because on a larger job that package is exactly what Texas prohibits. The crew dries the structure, which is the best defense against mold, and the pages on mold inspection and mold remediation explain what to ask each professional, starting with a TDLR license number.