A new tankless water heater, installed by a licensed plumber.
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Leak Detection and Repair in Flower Mound, TX
A new tankless water heater, installed by a licensed plumber.
Mention Monty the Mole
Something is leaking and you can’t find it. Maybe the water bill jumped for no reason, maybe there’s a soft spot in the hallway, maybe you just hear water moving when the house is quiet. Molberg Plumbing handles leak detection and repair throughout Flower Mound, from pinhole leaks behind drywall to slab leaks under the foundation. We locate the problem first with the right equipment, then fix it without tearing apart more of your home than the job requires.
Waiting rarely helps. A leak that runs quietly for a few months can warp flooring, feed mold behind a wall, and add hundreds to your water bill before anyone notices. Get in touch and we’ll find it.
Every service Molberg runs in Flower Mound, on one list. Not sure which? Call it in and describe what it is doing.
From routine repairs to emergencies, Molberg Plumbing is ready to help.
Call 817-475-2800
Leaks rarely happen for mysterious reasons. These are the culprits we find most often:
Some leaks are stranger than others. We’ve traced them to failed appliance connectors, cracked shower pans, and irrigation lines that had been running underground for a year. Whatever caused yours, we can find it and repair it.

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David is a top notch plumber! He is very knowledgeable, professional and explained everything to our understanding. He took care of our clogged drain. Very personable and showed up on time. Highly recommend Molberg Plumbing!!
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Some leaks announce themselves with water on the floor. Others sit quietly behind a wall for a year. These are the ones our Flower Mound techs run into most often, and each takes a different approach to locate and repair.
Loose compression fittings, split supply lines, and corroded drain connections let water pool inside the cabinet where nobody sees it. The cabinet floor swells, the subfloor follows, and mold gets started well before the smell gives it away.
When a water line running under your concrete slab fails, the damage moves outward through soil that’s already prone to shifting. Warm flooring, a running-water sound, and unexplained bill increases are the usual clues. We locate these with electronic and acoustic equipment instead of opening the floor to look.
Pipes routed through framing can leak slowly for months, showing up as bubbling paint, brown stains, or drywall that feels soft to the touch. Pinhole corrosion in aging copper is a frequent cause in Flower Mound’s established neighborhoods.
A failed wax ring lets water seep into the subfloor every time the toilet is used, while a worn flapper quietly runs hundreds of gallons through the tank. Both are inexpensive fixes once identified.
Exterior spigots take the worst of the freeze and thaw cycle, and a split one often leaks underground against the foundation without ever dripping visibly. We replace them with freeze-resistant models where it makes sense.
Rust around the base, moisture near the pressure relief valve, or a puddle under the tank all point to a unit approaching failure. A water heater that lets go can release its full capacity into your home in minutes, so this one is worth checking early.
Deteriorated grout, a failing shower valve, or a bad tub drain seal sends water behind the tile and into the framing. The tile looks fine right up until the subfloor doesn’t.
Underground sprinkler lines crack from soil movement and freeze damage, and the water usually disappears into the yard unnoticed. Soggy patches, uneven grass growth, and a summer bill that doesn’t match your watering schedule are the signs.
The flexible connectors behind washing machines, dishwashers, and refrigerators are among the most common causes of household flooding. They fail without warning, and replacing them first is one of the cheapest preventive measures available.

Monty digs a straight line from your call to a working pipe.
Reach us 24/7. A real person answers, and same-day slots are on the table for most projects.
We diagnose the real problem, walk you through the options, and put the price on paper first.
Repairs usually happen on the spot. Bigger jobs get scheduled around you, and every job is backed by our workmanship warranty.

No two leaks call for the same fix. A failed supply connector takes minutes. A slab leak might come down to a spot repair, a rerouted line, or a partial repipe, and the right answer depends on your home’s age, plumbing material, and how many times it has leaked before. Our Flower Mound plumbers lay out every option with real pricing, including trenchless methods that skip the excavation. You decide, and we handle it from there.
Repairing leaks is our job. Helping you avoid the next one is part of it too. Keeping grease, hair, and food debris out of your drains reduces the backpressure that strains joints over time. Wrapping exposed pipes and disconnecting hoses ahead of a freeze prevents the split lines we see every January. Having your water pressure checked catches the silent problem behind a surprising number of failures.
Annual maintenance covers the rest: flushing the water heater, inspecting supply lines and angle stops, testing shutoff valves, and looking at the spots where leaks usually begin. Our VIP Membership keeps that on a schedule so nothing gets forgotten.
Use your water meter. Shut off every fixture and appliance in the house, write down the reading, and check it again half an hour later. Movement means water is going somewhere. A warm patch on the floor, water audible with nothing running, or a musty smell in a single room all support the same conclusion.
Usually not to find it. Infrared imaging, acoustic listening equipment, and pressure testing narrow the location down to a specific spot before anything gets opened. When the repair itself requires access, we keep the opening as small as the job allows and clean up before we leave.
The soil. Denton County clay expands when it’s wet and shrinks when it’s dry, and the water lines under your foundation flex with it season after season. Add a February freeze and copper that’s been moving for two decades finally fails. It’s one of the most frequent calls we run in this area.
Treat it as same-day. Water under the foundation saturates soil that already moves, which leads to cracked tile, uneven floors, and foundation work that dwarfs the plumbing bill. Slab leaks also run nonstop, so the waste accumulates around the clock. Warm flooring or water you can hear below the slab means call now.
Slow leaks cause the most expensive damage precisely because nobody notices them. Water soaks the cabinet base, the subfloor swells, and mold establishes behind the plumbing. By the time there’s a smell or a soft spot, you’re replacing more than a fitting. The drip you can see today is the cheap version.
Close the supply valve at that fixture if you can reach it. If the leak is inside a wall, under the slab, or you can’t pin it down, shut off the main. Move rugs and furniture clear, photograph the damage before cleaning up in case you file a claim, and hold off on the dishwasher and washing machine until we’ve had a look.
It depends on the policy. Sudden failures like a burst supply line are often covered, while damage from a slow leak that ran for months frequently isn’t. Many policies pay for the resulting damage without covering the pipe repair itself. Document everything, keep your invoices, and call your carrier early. We’ll provide written findings on what we located and repaired.
Estimates are free, and we walk you through what we found and what your choices are before anything gets scheduled. You’ll have the price up front. If the repair turns out larger than you planned for, financing is available so a slab leak doesn’t have to wait until next month.
Water heaters, repipes and sewer lines don’t wait for a good month. Get the price on paper first, then pay it off over time.
12 months
No interest if paid in full*
Also 6 and 15 months, or fixed-rate plans up to 180 months. On qualifying work through GreenSky.
See Financing Plans2 years
VIP workmanship warranty
Extended coverage on installs and replacements with Molberg-supplied parts. Renews yearly with the $199 VIP plan.
See VIP Membership*Subject to credit approval. Call 866-936-0602 for financing costs and terms.
Every day a hidden leak runs, it costs you more. Request an appointment online or reach out for your free estimate, and a licensed Molberg plumber will be out with the equipment to pinpoint it and the parts to fix it. Honest pricing, careful work in your home, and financing available when the repair is bigger than expected.
Call 817-475-2800We serve Fort Worth, the DFW area and Houston’s north side. Find your city below.
Tarrant · Denton · Parker Counties

Montgomery · Harris Counties

Coverage is approximate. Just outside it? Call anyway.
Both service areas in full