RV Leak Detection & Repair in Sebastian
Moisture meter testing, hidden leak tracing, pipe joint repair, and water damage assessment. Mobile service across Indian River County.
TL;DR
- Professional moisture meter scanning to find hidden leaks behind walls
- Pressurized water system testing for fresh, gray, and black water lines
- Pricing from $85 to $350 for detection and repair
- Water damage assessment with honest scope recommendations
- Same-day mobile service in Sebastian and surrounding Indian River County cities
Finding Water Before It Finds Your Subfloor
Water leaks are the silent killer of RVs. A pinhole leak behind a wall can run for weeks before you notice it. By the time you see a stain on the ceiling or feel a soft spot in the floor, the damage has spread far beyond the original leak point. In Florida's humidity, mold starts growing within 48 to 72 hours of moisture getting trapped behind a wall panel.
We use professional-grade moisture meters that can detect elevated moisture levels behind walls, under floors, and around windows without cutting anything open. This lets us map the extent of water intrusion and trace it back to the source before we start any repair work. Finding the source is the hard part. Fixing it is usually the easy part.
Why Florida Makes Leaks Worse
Indian River County's average humidity sits between 70 and 85 percent for most of the year. That means even a small leak behind a wall creates an environment where moisture can't evaporate. Instead, it gets absorbed into the wood framing, the insulation, and the subfloor. Mold takes hold fast. We've opened up walls in RVs parked around Sebastian and Vero Beach to find black mold colonies that started from a leak the owner didn't even know about.
Florida's heat cycling also contributes. During the day, PEX plumbing fittings expand. At night, they contract. Over months of this thermal cycling, crimp rings can loosen slightly, and push-to-connect fittings can develop micro-leaks at the O-ring seals. These leaks are almost impossible to see without pressurizing the system and inspecting every fitting individually.
Fresh Water vs Gray Water vs Black Water Leaks
Fresh water leaks come from the pressurized side of your system: the water pump output, faucet supply lines, the water heater connections, and the city water inlet. These are the most common and the easiest to find because the system is under pressure. Your water pump cycling on when nothing is running is the telltale sign.
Gray water leaks come from your sink drains, shower drain, and washing machine drain. These are gravity-fed, so they only leak when water is flowing. They're harder to find because you need to run water and watch for drips. The smell is usually the first clue: a musty, stagnant odor under a cabinet or near the shower.
Black water leaks come from the toilet connection to the holding tank and the tank's drain valve. These are the least common but the most unpleasant. A failed toilet flange seal or a cracked fitting at the holding tank can let waste water seep into the underbelly insulation. If you smell sewage, don't ignore it.
Pipe Joint Failures
RV plumbing uses PEX tubing with crimp fittings, push-to-connect fittings (like SharkBite), and occasionally barbed fittings with hose clamps. Every junction point is a potential leak. Road vibration loosens connections over time. Florida's temperature swings stress the plastic fittings. And hard water deposits can build up inside fittings, creating pressure points where the tubing meets the connector.
The most failure-prone locations are the connections behind the kitchen faucet (because it's the most-used faucet), the water heater supply and return lines, and any fitting that passes through the floor or a structural member where vibration is concentrated.
What Leak Detection and Repair Costs
A standard leak detection inspection runs $85 to $150 depending on the complexity. Simple fitting repairs cost $100 to $200 on top of the detection fee. Replacing a section of PEX or repairing multiple fittings runs $200 to $350. If water damage has already occurred, the assessment is included in the detection visit, and we'll give you a clear picture of what it'll cost to fix both the leak and the damage.
Patrick Lee carries a full kit of PEX fittings, crimp rings, push-to-connect connectors, and replacement tubing on the truck. About 80 percent of leak repairs get completed in a single visit once we've found the source.
Leak Detection FAQ
The most common signs are soft or spongy spots in the floor, a musty smell that won't go away, water stains on the ceiling or walls, peeling wallpaper or delaminating wall panels, and unexplained drops in your fresh water tank level. In Florida's humidity, mold can establish itself behind a wall within 48 to 72 hours of a leak starting. If you notice any of these signs, don't wait. The damage spreads fast.
We use a combination of visual inspection, a professional-grade moisture meter, and pressurized water testing. The moisture meter can detect elevated moisture levels behind walls, under floors, and around windows without cutting anything open. We pressurize the water system and methodically check every fitting, joint, valve, and connection. For suspected roof leaks, we inspect seams and penetrations and use the moisture meter on the ceiling from inside. About 85 percent of leaks are found within 30 to 45 minutes.
We assess the extent of the damage and fix the source of the leak. If the damage is limited to a soft spot in the floor or a small section of wet insulation, we can handle the repair on site for $200 to $500 depending on scope. If the leak has caused structural rot in the subfloor, wall studs, or roof decking, the repair becomes a larger project. We'll give you an honest assessment of what we can fix versus what needs a dedicated restoration specialist.
You can do a basic check. Close all faucets and make sure nothing is running, then watch your water pump. If it cycles on every few minutes, you have a leak somewhere in the pressurized system. Check under sinks, around the water heater, at the toilet supply line, and at any visible pipe connections. Look for drips, moisture, or staining. However, hidden leaks behind walls or under floors require a moisture meter to find, and those are the ones that cause the most damage before you notice them.
A standard leak detection inspection takes 30 to 60 minutes. If the leak is at a visible fitting or connection, we often find it within 15 minutes. Hidden leaks behind walls or under floors take longer because we need to systematically scan with a moisture meter and trace the water path back to its origin. If multiple leaks are present, which is common in RVs over 10 years old, a thorough inspection can take 1 to 1.5 hours.
The top five leak locations are under the kitchen sink at the supply connections, at the water heater drain plug or anode rod fitting, at the toilet supply line connection, at the city water inlet on the exterior, and at PEX crimp fittings behind walls. In Florida, heat cycling causes PEX fittings to expand and contract, which loosens crimp rings over time. We check all of these locations during every leak detection service.