A slab leak is a pipe leak under or inside a concrete foundation. Signs include warm floor spots, unexplained high water bills and the sound of running water. A plumber locates and repairs the leak, and a restoration company dries wet flooring and walls.
What slab leak water damage involves
Many Houston homes are built on slabs, with supply lines running through or beneath the concrete. When one leaks, water rises into flooring, baseboards and the bottom of walls.
Houston's expansive clay soil swells when wet and shrinks when dry. That movement stresses pipes under the slab, which is a common reason for slab leaks in the region.
Signs you may need this service
- Warm or hot spots on the floor
- Water meter spinning with every fixture off
- Sudden spike in your water bill
- Buckling hardwood or lifting laminate
- Cracks in walls or floors with dampness
- Musty smell with no visible source
What happens step by step
- Check the meter with all water off to confirm a leak
- Shut off the main valve if water is visible
- Call a licensed plumber for leak detection
- Call for moisture mapping and drying
- Remove flooring that cannot dry in place
- Dry the slab surface, subfloor and wall bottoms
- Repair the line and rebuild
Why this matters in Houston
Pier and beam homes in older neighborhoods like the Heights have crawl spaces instead of slabs, but they can see similar hidden leaks. In both cases, fast moisture mapping saves flooring and limits mold.
Mistakes that make damage worse
- Ignoring a high water bill
- Covering damp flooring with a new layer
- Assuming a warm floor is a heating issue
- Waiting until the floor buckles
Cost considerations
Detection and plumbing repair are billed by the plumber. Drying and flooring removal depend on the area affected. Ask your insurer whether it covers the access cost to reach the leak, as policies differ.
How this connects to the rest of your recovery
Whether you live in Webster, TX or elsewhere, the first call is the same. See water damage restoration in Houston for the full process, then mold inspection and testing if mold or hidden moisture is a concern.
Property owners in Webster, South Houston and Kingwood regularly ask about this kind of loss. Local conditions in each area differ, so check the page for your city to see ZIP codes and the causes we see most often there.
Helpful guides
Related services
Burst Pipe Water Damage
Cleanup and drying after a frozen, split or failed pipe.
Learn more
Structural Drying and Dehumidification
Air movers, dehumidifiers and moisture mapping until the building is dry.
Learn more
Mold Inspection and Testing
Moisture checks and licensed mold assessment after water damage.
Learn moreFrequently asked questions
How do I know if I have a slab leak?
Warm floor spots, running water sounds, a spinning meter and unexplained high water bills are common signs.
Does insurance cover slab leaks in Texas?
Coverage varies. Many policies cover resulting damage but not the plumbing repair itself. Some include limited foundation endorsements.
Can a slab leak cause mold?
Yes, if flooring and walls stay damp.
Who fixes a slab leak?
A licensed plumber. A restoration company handles drying and cleanup.
Do you cover slab leak water damage near me in Houston?
Yes, call 24/7.
How long does drying take?
Usually three to seven days depending on flooring and slab moisture.
Water Damage Restoration Houston is not the contractor. The independent company that arrives sets its own pricing, licenses and terms and does the work. See our disclaimer.