Drain Line Repair Richardson TX | Leak Under the Floor

Drain Line Repair · Richardson, TX

Written by Steven Shipler, Texas Licensed Master Plumber (Texas License #45825), MBA

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This is a drain line repair in Richardson, TX. We found a leak under the floor with a pressure test and a geophone, removed the subfloor, and the customer asked us to fix it. We repaired the line, pressure tested again, and the system held: sealed.

Drain Line RepairLeak Under the FloorPressure Tested Before & AfterFound + Fixed

Drain Line Repair in Richardson, TX: Found It, Then Fixed It

We were called out to a home in Richardson to find a leak. We pressure tested the drain system with a test plug in the kitchen drain and used a geophone, and found the leak under the floor.

We removed the subfloor to get to it. Once it was open, the customer asked us to do the repair too.

So we fixed the leak, then pressure tested again. This time it held. It’s a closed plumbing system again, and everything worked.

Leak under your floor?

We find it, fix it, and pressure test it again after the repair.

Call or Text 972-333-5448

What We Fixed, Step by Step

Step 1: Plug the drain and pressure test

Test plug with a chain installed in the kitchen drain under the sink for a drain pressure test in Richardson TX — The test plug in the kitchen drain, used to pressure test the drain system.

With the drain closed off, the pressure test showed there was a leak in the system.

Step 2: Find the leak under the floor

We used a geophone to listen for the leak and narrow it down to a spot under the floor.

Step 3: Open the floor and repair the line

Subfloor removed to expose the PVC drain line, with the plumber working on the repair — Subfloor removed and the drain line exposed for the repair.

Toilet removed in the Richardson home, showing the toilet flange on the tile floor — The toilet off its flange during the job.

With the subfloor out of the way, we repaired the leaking section of the drain line.

Step 4: Pressure test again

After the repair we ran the pressure test again. It held, so the system was sealed and working.

What a Homeowner Should Do First

Don’t ignore smells or damp flooring. A musty or sewer smell, or a soft or damp spot in the floor, is worth checking.
Get the drain system pressure tested. A test that won’t hold tells you there’s a leak, even when you can’t see it.
Find it before you tear up floors. Locating the leak first tells you where the floor needs to be opened.
Make sure it’s retested after the repair. A second pressure test is how you know it’s sealed.

What Does Drain Line Repair Cost in Richardson?

Pricing depends on the job: where the leak is and how much floor has to come up. Call or text 972-333-5448 and we’ll tell you what yours needs.

Why Flash Fix

One call covers plumbing, sewer, electrical and air conditioning. Every plumbing job is run by a Texas Licensed Master Plumber, and on this one we found the leak, fixed it and proved it with a second test.

Serving Richardson and Nearby Cities

Richardson: this drain leak was hidden under the floor, and a pressure test plus a geophone found it without guessing.

Allen: we find and fix leaks and sewer problems in Allen homes too.

Plano: for Plano homes with a leak under the floor, we pressure test and locate it before opening anything.

Flash Fix also serves McKinney, Frisco, North Dallas and Dallas, across Collin County and Dallas County.

Frequently Asked Questions

How did you find a leak under the floor?

We pressure tested the drain system with a test plug in the kitchen drain, and used a geophone to listen for the leak under the floor. That told us where to open it up.

Do you have to open the floor to fix a drain leak?

On this Richardson home, yes. We removed the subfloor over the leak so we could reach the drain line and repair it.

Can the company that found the leak also fix it?

Yes. After we found it, the customer asked us to do the repair, so we fixed it ourselves.

How do you know the repair worked?

We pressure tested the drain system again after the repair. It held, so everything was sealed.

What does a test plug in the kitchen drain do?

It closes off the drain so the system can be pressure tested. If the pressure doesn’t hold, there’s a leak somewhere in the line.

What are signs of a drain leak under the floor?

Musty or sewer smells, damp or soft flooring, or a drain system that won’t hold a pressure test are reasons to have it checked.

Do you only find leaks, or fix them too?

Both. On this job we found the leak, repaired the drain line and retested it.

How much does a drain line repair cost in Richardson?

It depends on where the leak is and how much floor has to come up. Call or text 972-333-5448 and we’ll tell you what yours needs.

Drain leak in Richardson?

Found, fixed and retested sealed.