What to do after water damage in your home

Finding water flooding through your Houston home is one of the most stressful things a homeowner can deal with. Whether it is a burst pipe at 2 AM, an overflowing water heater, or bayou floodwater coming through the foundation, the first hours after water damage matter more than anything that comes after. What you do and what you avoid during that window determines how much of your property can be saved and what the restoration will cost.

Houston’s climate adds urgency. With average humidity around 75 percent and summer temperatures regularly over 95 degrees, mold can start growing in as little as 24 hours after water exposure. Quick action is not optional here.

Step 1: Make sure everyone is safe

Before you touch anything, make sure your family is safe. If standing water has reached electrical outlets, breaker panels, or appliances, do not walk through it. Turn off the main electrical breaker only if you can reach it without stepping into water. If there is any chance of sewage contamination (common during Houston storm surges), keep children and pets out of affected areas entirely.

Step 2: Stop the water source

If the damage is from a plumbing failure (a burst supply line, a failed water heater, a broken dishwasher hose), find the valve feeding that fixture and shut it off. If you cannot isolate the fixture, shut off the main water supply at the meter. Houston homes built on slab foundations (the vast majority in the area) typically have their main shutoff near the front of the property at ground level.

For weather-related flooding, you obviously cannot stop the source. Focus on keeping more water out: sandbag doorways, close interior doors to contain the spread, and move anything valuable above the waterline.

Step 3: Call a restoration company

Time is the single biggest factor in water damage outcomes. IICRC standards classify water damage by the time elapsed since exposure. Within the first 24 hours, most structural materials can be dried in place. After 48 hours, secondary damage (warping, delamination, microbial growth) picks up fast.

A certified restoration company brings industrial equipment that consumer tools cannot match: truck-mounted extractors that pull thousands of gallons per hour, commercial dehumidifiers rated for 30+ pints per day, and thermal imaging cameras that find hidden moisture behind drywall and under flooring.

Step 4: Document everything for insurance

Before you start cleaning up, document the damage thoroughly. Use your phone to take photos and videos of every affected room, showing the waterline height, damaged belongings, and the source of the water if visible. Texas insurance law (Texas Insurance Code Chapter 542) requires insurers to acknowledge your claim within 15 days and make a coverage decision within 15 business days after that. Solid documentation from day one makes your position much stronger.

• Photograph each room from multiple angles
• Capture close-ups of damaged items with identifying details
• Record video walkthroughs narrating what happened
• Save receipts for any emergency purchases (pumps, fans, tarps)
• Keep a written log of the timeline: when the damage occurred, when you discovered it, when you called for help

Step 5: Start immediate mitigation

While waiting for the restoration team, there are safe steps you can take to limit the damage:

• Move furniture off wet carpet by placing aluminum foil or plastic under legs
• Lift curtains and drapes off the floor
• Remove throw rugs and area rugs from wet areas
• Open closet doors and cabinet doors to promote air circulation
• If it is safe and the weather is dry, open windows to cross-ventilate (Houston’s humidity can work against you here, so use judgment)
• If you own a wet/dry vacuum, start extracting standing water from hard surfaces

What NOT to do after water damage

Equally important is knowing what to avoid. Common mistakes can void insurance coverage, create safety hazards, or make the damage worse.

• Do not use a household vacuum on water. It is not designed for liquids and creates an electrocution risk.
• Do not turn on ceiling fans or the HVAC system if the ceiling is sagging from water weight.
• Do not try to remove drywall yourself. Hidden moisture behind walls needs to be dealt with systematically.
• Do not throw away damaged items before documenting them. Your insurer needs to verify the loss.
• Do not apply bleach to mold. It does not kill mold on porous surfaces and can mask the problem for inspectors.

Houston-specific things to know

Houston’s geography and climate create water damage patterns you will not find elsewhere. The city sits on expansive clay soils (Beaumont Clay formation) that swell when saturated, pushing upward on slab foundations and sometimes cracking supply lines beneath the house. After heavy rains, it is common for homeowners to find leaks that started not from the storm itself but from soil movement beneath the slab.

The bayou system (Buffalo Bayou, Brays Bayou, White Oak Bayou, and their tributaries) can overflow fast during intense rainfall. If you live in a flood-prone zone near any of these waterways, keep a pre-packed emergency kit and a list of contacts (including your restoration company) where you can grab it quickly.

Houston’s building stock matters too. Homes built before the 2009 building code updates may lack modern moisture barriers and drainage systems. Pier-and-beam homes common in the Heights and Montrose have crawlspaces that can trap moisture for weeks if not properly ventilated after flooding.