Water on the floor of a new Celina home? Shut off the main, then call.

What should you do first when water is spreading in a Celina home?

Shut off the water at the main valve, keep people and pets out of standing water that touches outlets or cords, and photograph the damage before moving anything. Switch off power to the wet area only if the panel is dry and reachable. Then call, because drying started early limits how far the water travels.

Find the main before you need it. In many recent subdivisions it is a ball valve inside the garage or at an exterior wall near the meter, and a second valve sits in a box near the curb that the water utility controls. Turn the handle once this month so you know it moves, because a seized valve is no help at midnight.

If the water came up through a floor drain or toilet, or in from a street that flooded, treat it as contaminated and keep children and pets out of the room. If a ceiling is bulging with water, do not poke it open under your own weight, because a controlled drain is safer than a collapse. Lift small items off wet floors, and take photos and short video of every wet room, including the brand labels on damaged appliances, for your insurer.

• Stop the source: the main for a split line, the supply valve behind the washer, toilet or water heater for a local leak.
• Stay off the slab where it is wet near power: garage outlets, kitchen islands and floor outlets are common places for water to meet electricity.
• Photograph first, move second: wide shots, close shots and the water line on walls.
• Call your insurer early: coverage depends on your policy and the cause, and the crew can supply readings and photos for the claim.

Why do slab-on-grade homes dry differently from houses with a cellar?

A slab home has no cellar, so water has nowhere to drain. It spreads across the concrete, soaks the bottom plate of walls, cabinet bases, baseboards and flooring, and can sit under laminate or tile for days. Drying means checking the slab edges and wall bottoms with meters, not just the visible surface.

Most North Texas homes are slab-on-grade, and many sit on post-tension slabs, because the clay soil moves too much for a conventional cellar. A single-storey house spreads a leak across one big floor. A two-storey house sends an upstairs leak through the ceiling below, so the damage often turns up one room away from the source.

Newer homes also have more finished surface to protect: engineered flooring, tile over the slab, painted trim and built-in cabinets. Water travels under those layers and stays there. The technician uses a moisture meter and a thermal tool to follow it, opens a small section of baseboard or drywall where the readings call for it, and sets air movers and a dehumidifier so the wet layers dry in place when they can. If you want the full method, structural drying walks through the equipment and the readings.

Which seasons bring water damage calls in Collin and Denton counties?

Water problems follow the weather here. Hard freezes in January and February burst lines on thaw, March through June brings hail and heavy rain, summer runs air conditioners and sprinklers for months, and autumn brings appliance and water heater failures. None of this is guaranteed, but the pattern explains why calls bunch up.

The National Weather Service Fort Worth lists about 37 inches of rain a year at DFW Airport for 1991 to 2020, and the same airport station averages roughly a month of freezing days in a typical year. A freeze that comes after years of mild winters catches homes unprepared, and the line that burst in an attic or an exterior wall pours water when it thaws. The burst pipe and frozen pipe pages cover both.

Spring is hail and storm season. A hail-bruised roof can admit rain for weeks before a stain shows on a ceiling, and the hail and roof leak page explains what the crew does while a roofer handles the shingles. In summer, an attic air handler with a clogged drain line overflows into the ceiling below, and a broken irrigation line beside the foundation can soak a slab edge. See AC condensate leaks and irrigation leaks.

Who else do you need besides the restoration crew?

The crew handles extraction, drying and cleanup. A licensed plumber repairs pipes and slab leaks, a roofer repairs the roof, and an HVAC technician clears a condensate drain. If the home is still under a written builder warranty, call the builder too. Your insurer decides coverage under your own policy.

Plumbing in Texas is licensed through the Texas State Board of Plumbing Examiners, and finding or rerouting a leak in or under the slab is plumbing work. The crew will help you stop the water and dry what it reached, and will say plainly when the next call is a plumber. Some cities also require permits for water heater and plumbing work, so check with your city or town; Celina has its own Building Services office, and Prosper has a Building Inspections division.

If the house is a year or two old, read your written builder warranty before you pay for a repair, because the builder may owe the fix. New construction water damage and the guide on builder warranties explain the order of calls. Many Celina communities also have homeowners associations, so check your HOA rules before exterior work or a contractor's equipment goes in.

What about mold after a leak?

Mold can start growing in wet materials within a day or two, and the EPA's 24 to 48 hours is a guideline, not a deadline. Mold may be present even if materials looked dry in time. Texas licenses mold assessors and remediators separately, so testing and removal are not offered here as one package.

Drying quickly limits mold, and readings tell the crew when materials are dry. They do not rule out growth that began before the crew arrived, especially in a closed wall or under flooring that stayed wet over a long weekend. Mold can trigger allergy and asthma symptoms in some people, so a musty smell or a stain that returns after drying is worth acting on.

In Texas, the Department of Licensing and Regulation licenses mold assessment and mold remediation as separate licences, and the work is not sold here as a single test-and-remove job. A homeowner working on their own home is treated differently from a contractor, and a person need not be licensed to remediate an area where the mold affects less than 25 contiguous square feet. The guide on Texas mold rules lays that out, and the mold inspection and mold remediation pages explain what each step is.