Slab Leak Repair

There is a leak under the floor or there is not, and you can settle that yourself in two hours before anyone comes out.

In one paragraph

Warmth in one patch of floor, running water heard when the house is silent, or damp at the edge of a room is what places a leak under the slab rather than behind a wall. The meter test that confirms water is leaving the system at all is published free by EPA.

Source: US EPA WaterSense, Fix a Leak Week.

UnderSlab is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands, and work that opens a structural slab is normally permitted — ask to see the permit. We carry out no work and no leak detection, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call.

Start with the meter

EPA publishes the test: read the water meter, use no water at all for two hours, read it again. If it has moved, water is leaving the system with nothing asking for any.

That single fact turns a vague worry into something a contractor can act on, and it costs nothing. How to run it properly, and the winter version that uses your existing bill.

Source: US EPA WaterSense, Fix a Leak Week.

Then work out where

A moving meter proves a leak, not a slab leak. Toilets are the commonest culprit and EPA gives them their own ten-minute test. Walk the floor barefoot too — a warm patch is close to diagnostic and it points at a spot rather than a house.

What points under the floor, and what points somewhere much easier to reach.

Before anybody cuts anything

Establish what kind of slab you have, and get that answer from somebody with nothing to sell you — the original plans, the building department, or a structural engineer.

It belongs before the repair method is chosen rather than after, and one of the repair options does not involve cutting the floor at all. Who to ask and what to ask them.

What we actually do

We connect homeowners with independent contractors who cover their area, and the contractors pay us when we route them a call. You are never charged. We would rather you ran the meter test first and found a toilet flapper than called us.

How that works in full, and where we route.

Everything on this site

If the meter moved with everything off, you have a leak.That is the finding worth leading with, because it saves an hour of diagnosis. We connect you with a contractor who covers your area, and your ZIP code is what decides who that is. You are never charged. It does not have to be a slab leak either — every kind of plumbing request is routed.

Call (888) 706-0205