In the Silicon Valley real estate market your home is your most valuable asset. But for many San Jose residents a hidden threat is lurking beneath the concrete foundation: the slab leak. Because most homes in areas like Almaden Valley and Berryessa are built on concrete slabs a leaking pipe under the house can go unnoticed for months causing massive damage.

What Exactly is a Slab Leak?

A slab leak occurs when the copper or galvanized water lines running beneath your home’s concrete foundation begin to fail. This can be caused by the shifting clay soil common in the Santa Clara Valley or by the corrosive nature of our local hard water eating away at the pipes from the inside out.

The Warning Signs You Cannot Ignore

Since you cannot see the pipes you must look for these subtle red flags:

• The Sound of Running Water: You hear water rushing even when every faucet is turned off.

• Warm Spots on the Floor: If a hot water line leaks it will heat up the concrete and your flooring above it.

• Foundation Cracks: Sudden cracks in your drywall or baseboards can indicate the soil beneath your slab is becoming saturated and shifting.

• Unexplained High Water Bills: A sudden spike in your monthly statement is often the first sign of a hidden leak.

Why San Jose Homes are at Risk

Many local homes were built during the post war housing boom using materials that have a 50 year lifespan. We are now seeing a surge in slab leaks because those pipes have officially reached their limit. Combined with our hard water which accelerates “pinhole” leaks older San Jose infrastructure is under constant stress.

The Solution: Non Invasive Leak Detection

The old way of fixing a slab leak involved jackhammering through your living room floor. Today San Jose Plumbing Services uses electronic sonic equipment and thermal imaging to pinpoint the exact location of the leak without damaging your home. Once found we can often “reroute” the pipe through the attic or walls which is a much cleaner and more permanent solution.