Burst & Frozen Pipe Water Damage in San Marcos, TX

First Steps After a Pipe Bursts

When a pipe bursts, shut off your water main first to stop the flow, then cut power to any wet areas at the breaker before you step in. Move what you can. Call for water extraction right away, because the first 24 to 48 hours decide whether floors, walls, and cabinets can be saved or end up in the dumpster.

Shut off your water main

Stop the source before anything else. A burst supply line can push out gallons a minute, so toweling the floor while the water keeps coming gets you nowhere. Your main shut-off is usually where the line enters the house. That means a garage, a utility closet, near the water heater, or in a box near the curb. Turn a round valve clockwise or flip a lever a quarter turn until it stops.

Kill power to wet areas

Water and electricity together is the part people skip when they're rushing. If water has reached outlets, baseboards, or the panel itself, cut those circuits at the breaker before you walk through standing water and treat anything wet near a live circuit as dangerous until proven otherwise. When in doubt, stay out and wait, because no floor is worth a shock.

Call for emergency extraction

Once the water is off and the room is safe, call. The reason isn't the puddle you can see. It's the water that already ran into the wall cavity, under the cabinets, and down to the subfloor while you were finding the shut-off. That hidden water is the real problem. Get the visible water up with towels or a wet vac in the meantime, pull rugs and electronics clear of the wet zone, and lift anything off the floor that can still be moved by hand.

What Burst Pipe Water Damage Includes

Plenty of failures get called burst pipes. The cause changes how the water behaves. A frozen pipe splits when the water inside expands in a hard freeze, then floods the second it thaws. A braided steel supply line fails at the fitting and sprays for hours before anyone notices.

That is especially true overnight or while the house is empty. A water heater can crack at the tank, and a copper or galvanized line inside a wall can give way at a joint with no warning.

Here's the part most homeowners get wrong. The puddle on the floor is usually the smallest part of the problem. In a new-build subdivision, the most common burst isn't a frozen main, it's a failed braided washing-machine or toilet supply line, a twelve-dollar part that quietly floods a downstairs ceiling overnight. Cheap part, expensive mess. The water inside the wall cavity and under the subfloor is what causes the mold call three weeks later.

How We Restore Burst Pipe Damage, Step by Step

Our crews follow ANSI/IICRC S500. We shut the water off at the source, extract standing water, open only what has to be opened to reach wet framing, then dry to a documented standard. Here is the sequence on a typical burst pipe call.

1. Confirm the main is off and locate the break

First we confirm the water main is shut and trace the failure back to the pipe that let go. On a freeze break that usually means an attic run, a garage line, or an exterior-facing wall cavity, the spots that freeze first in a Texas home. Thermal imaging shows where water tracked behind drywall and under flooring, and a moisture meter confirms how far and how deep it traveled before we mark it on a plan of the room.

2. Water extraction

Next we pull the standing water with truck-mounted or portable units. Speed matters here more than anywhere else in the job, because every hour that water sits, it migrates further into the structure and the salvageable list shrinks.

3. Open the wall cavity and dry the framing behind it

This is the step that separates real restoration from mopping. Water from a burst supply line hides in the wall, so we open the cavity where the pipe runs, drill weep holes at the base of the drywall, and inject dry air behind baseboards to move moisture out of the framing and insulation. Air movers and LGR dehumidifiers run alongside psychrometry, the science of measuring temperature and humidity, to dry the structure to a documented standard. A cavity takes days to dry, not a fan pointed at a damp spot, because the framing holds water long after the surface feels dry to the hand.

4. Pressure-test the repair before we close the wall

We do not seal a wall back up over a pipe that hasn't been proven. Once the plumbing source is repaired, the line gets pressure-tested to confirm it holds before drywall goes back, so you are not re-opening the same wall in a month. The first 24 to 48 hours are still the ones that decide whether framing dries or rots (ANSI/IICRC S500).

5. Monitoring and documentation

We take daily moisture readings and log them. Numbers, not guesswork. When materials hit the dry standard, we can document those readings and provide a completion summary for your insurer, so "dried to standard" is a number on paper, not a guess.

6. Repairs and reconstruction

Once everything is dry, we rebuild. Here that means drywall, insulation, paint, and flooring back to pre-loss condition. One team handles mitigation through repair, so you aren't juggling separate vendors in the middle of a crisis you never asked for.

Signs You Have Burst Pipe Water Damage

Not every burst floods. Some hide. Watch for a sudden drop in water pressure, a spike in the water bill, a damp or warm patch on a wall or floor, the sound of running water with every tap closed, or a musty smell near a supply line.

• A sudden drop in water pressure, or a faucet that sputters.
• The sound of running water when every tap is off.
• A water meter that keeps ticking with nothing running.
• A warm or cold spot on a wall or floor.
• A brown stain on a ceiling below an upstairs bathroom.
• A water bill that spikes for no reason, climbing month over month even though nothing about how your household uses water has actually changed.

Any one is worth investigating. A line inside a wall can drip quietly for days, soaking insulation and framing the whole time, before it ever shows up as a stain on the ceiling below.

Why the First 24-48 Hours Matter

The window is short. Inside the first 48 hours, soaked drywall, flooring, and cabinets can often be dried and saved. Past it, materials swell, delaminate, and start to harbor mold, and our humid Central Texas air speeds that clock up considerably.

Move fast. What was a drying job on day one becomes a tear-out and rebuild by day four, which is the difference between a few hundred dollars in materials and a gutted room.

Burst & Frozen Pipes in San Marcos and Hays County

Freeze breaks are real here. Household pipes can begin to freeze when temperatures fall below about 20 degrees Fahrenheit, and sooner for the uninsulated attic and exterior-wall runs common in Texas homes. Hays County drops below freezing most winters, and those exposed pipes split when it does.

That threshold comes from NWS and building-science guidance. This is not a once-a-decade event. Winter Storm Uri in February 2021 burst pipes across San Marcos and the I-35 corridor when temperatures stayed below freezing for days.

The local risk splits two ways. Older neighborhoods like Hughson Heights carry aging galvanized and copper plumbing that fails at the joints. Newer subdivisions, Blanco Vista, Stonebridge, and La Cima, see factory-installed braided supply lines fail in the first few years. Both flood the same way. To get ahead of the next cold snap, our guide on how to prevent frozen pipes from bursting in a Texas freeze covers insulation and shut-off prep.

Standing water won't wait. Talk to a local tech.

Burst Pipe Water Damage Cost in San Marcos

A burst supply line is usually clean Category 1 water, which prices at the bottom of the Central Texas band, about $3.00 to $4.00 per square foot against a $3.00 to $7.50 range across all water losses (industry cost data, scoped under ANSI/IICRC S500). It climbs the moment the water sits long enough to turn grey, which in a Central Texas summer takes a day or two.

That is the published market rate band multiplied by floor area, not a quote from us. Whole San Marcos jobs range from about $1,200 for a small clean-water burst to $8,500 or more for one that ran through several rooms (industry cost data), and small jobs land near that $1,200 floor rather than the raw multiplication, because a callout and an equipment set have a practical minimum.

The Two Bills Nobody Warns You About

A burst pipe generates two separate scopes from two separate trades, and homeowners routinely expect one invoice.

That insurance split catches people out. A standard Texas homeowners policy generally pays for the damage the escaping water caused, not for replacing the component that failed. So the plumber's invoice frequently comes out of pocket while the drying and rebuild go on the claim. Ask your adjuster to confirm the split in writing before either trade starts.

On coverage generally, a sudden and accidental burst is one of the more commonly covered causes in Texas, while gradual or neglected leaks are often excluded. See does homeowners insurance cover water damage in Texas and filing a water damage insurance claim in Texas.

Texas Pipe-Freezing Temperatures

Household pipes can start to freeze once outdoor temperatures fall below about 20 degrees Fahrenheit, and sooner for uninsulated attic or exterior-wall runs, which are common in Texas homes built for heat rather than cold (NWS and building science guidance). The burst rarely happens during the freeze. It happens on the thaw, when the ice plug melts and pressure finds the split.

Texas homes are the vulnerable ones here specifically because so much plumbing runs through unconditioned attic space. In a Northern build those lines sit inside the heated envelope. Here they sit above the insulation, where attic temperature tracks the outdoors within a few degrees. Our Texas freeze pipe burst prevention guide covers the prep list before the next front arrives.

Where the Water Goes After a Supply Line Fails

Pressurised water does not pool politely at the failure point. It follows framing, and it travels a long way sideways before it shows up on a ceiling or a baseboard, which is why the wet footprint is almost always larger than the stain.

That fourth row is why a meter reading beats a visual check. Wet insulation holds water against framing without producing a single visible sign, and it is a common reason a repaired room comes back as a mold call three months later.