Water Leak Detection & Repair in Alpharetta, GA

Pipe buried in concrete makes a water leak much harder to find. In a house built on a slab, supply lines often run through or beneath the floor to reach kitchens and bathrooms, and a leak there has no ceiling to stain and no cabinet to drip into. The early clues are quiet ones. Alpha Plumbing and Sewer handles an Alpharetta slab leak in three stages: confirm that a supply line is leaking, locate it as closely as the equipment allows, and then help you decide how to fix it.

Signs that point under the slab

• A warm or damp patch on tile or concrete, sometimes felt with bare feet before it shows.
• The sound of running water near the floor when every fixture is off.
• Carpet padding that stays damp in one area, or wood flooring that begins to cup.
• A water heater that seems to run far more than it used to, which can mean a hot-water line is losing water.
• A water meter that keeps turning when the house is idle.

None of these proves a slab leak by itself. A damp floor can just as easily come from a toilet wax ring, a shower pan or a drain line, so the next move is testing rather than guessing.

Confirming the leak is in the supply piping

The first task is to show that pressurized supply pipe, not a drain, is losing water. With all fixtures off, the meter tells whether water is moving at all. Closing the cold inlet valve on the water heater can then show whether the loss is on the hot side or the cold side; if the meter stops, hot-water branches become the focus, which often fits a warm spot on the floor. Drain leaks only release water when something drains, so they behave differently and lead toward drain repair instead.

Pinpointing a leak under concrete

Once the general area is known, the technician listens through the floor with acoustic equipment that picks up the hiss of water escaping under pressure. On a hot line, thermal imaging can show a warm trail across the surface. Knowing where the lines start, whether at the water heater, a manifold or the point where the supply enters, keeps the search tight. The Georgia leak detection overview covers the same tools for other kinds of hidden leaks. The outcome is a marked spot accurate enough to plan a small opening, though concrete can soften and spread sound, so the mark is an informed estimate rather than a certainty.

Repair in place or reroute?

There are two main ways to deal with a leaking line inside a slab, and each carries trade-offs.

• Direct repair: cut an opening in the floor, break out the concrete over the leak, repair the pipe and patch the slab. This suits one isolated failure in otherwise sound pipe. The flooring in that spot has to come up, and matching tile or hardwood is often the hardest part.
• Reroute: cap the old line where it leaves the slab and run new pipe through walls, ceilings or the attic to the same fixture. The floor stays intact and the line leaves the concrete for good, but some walls and ceilings get opened along the new path.

If the piping has already failed in more than one place, a broader plan such as whole house repiping may make more sense than waiting for the next failure.

Protecting the floor and drying out

Water from a slab leak can soak flooring, padding and the bottom edge of drywall long before anyone notices. After the pipe is fixed, wet materials need to be dried properly, and some cannot be saved. If the leak ran for weeks, ask about water restoration so drying and moisture checks happen alongside the plumbing work.

Alpharetta permits for slab work

In Alpharetta, the Construction and Inspections staff in Community Development issue plumbing permits as well as building permits. A reroute, or any repair that changes the piping layout, is the kind of job where the permit question should be settled before the first wall is opened.

Questions about slab leaks in Alpharetta

How accurate is slab leak detection?

Close enough, in most cases, to plan one opening rather than several. The equipment narrows the leak to a small patch of floor, and the technician should say how sure the reading is before anything is cut. If the pipe turns out to sit a little to one side, the opening is widened along the pipe rather than started again somewhere else.

Is rerouting better than breaking the slab?

It depends on the house more than the method. Three questions usually settle it: how old the piping is, whether it has leaked before, and what the floor above the leak is made of. Older pipe with a history of leaks, or a floor that would be hard to match, tips the balance toward a reroute; a first leak under plain tile or carpet often favors a direct repair.

Can I keep using water while I wait for the repair?

When the meter moves slowly and no water is surfacing, many households carry on for a short while and keep an eye on the floor. If testing showed the leak is on the hot side, closing the cold inlet valve on the water heater can slow the loss. If water is visibly spreading, shut off the main valve and call for help.

Talk to us about a suspected slab leak

A warm floor, a meter that will not settle, or a damp patch that keeps coming back are all good reasons to call (404) 409-4448. Tell us where you noticed it, and Alpha Plumbing and Sewer can explain the next step.