Mobile Home Plumbing: Where Leaks Hide Under the Skirting
In a mobile home, most plumbing runs under the floor, behind the skirting, and leaks there can go unseen for months. Check the supply connection at the lot, the lines under the home, the water heater closet and the drain lines in the belly, and find out who owns which pipe before you repair anything.
Where Leaks Usually Start
| Spot | What to look for | Who often owns it |
|---|---|---|
| Lot connection and shutoff | Drips at the valve, wet ground around the riser | Park, up to the lot connection |
| Supply lines under the home | Wet insulation, damp soil under the skirt | Resident, under the home |
| Water heater closet | Water at the closet floor, rusted fittings | Resident |
| Drain lines in the belly | Sagging, damp insulation, repeated clogs | Resident |
| Tub and toilet connections | Soft floor, stains on the ceiling below | Resident |
Check the Park Rules First
According to the Town of Pembroke Park, it has 17 mobile home parks, four of them for recreational vehicles, and about half of its residents live in mobile homes. Each park sets its own rules for the lot connection, utility meters and repairs.
Ask management for a map of the lines and a written statement of who maintains what. In many parks, the park owns the pipes up to the lot connection and the resident owns everything from there into the home.
A Twenty-Minute Under-Home Check
- Close the shutoff and read the meter, then open it and read again with taps off.
- Walk the perimeter. Look for damp ground, mold or insects that favor moisture.
- Open an access panel in the skirting and use a flashlight on the supply lines and belly.
- Check the water heater closet floor and the base of the tub.
- Look at the insulation under the belly for sagging or stains.
Why Under-Home Lines Fail
Many mobile homes use flexible plastic supply lines, which can crack at fittings or be damaged by pests. Drain lines in the belly can sag, separate or collect debris, and the belly cover hides everything.
Hollywood's heat and humidity speed corrosion on metal fittings. If a line is leaking under the home, moisture can rot flooring and insulation before it shows indoors.
Finding and Fixing a Hidden Leak
If the meter moves with taps closed, a leak is somewhere on the supply side. Leak detection tests the lines under the home with pressure and acoustic tools.
A slow drain with a damp belly points to a drain line problem, and emergency drain cleaning with a camera shows if the line sags or separates. Our Pembroke Park page explains how we handle mobile home calls.
Skirting and Access Panels
Skirting hides the underside of the home, and a missing access panel makes inspection a chore. Know where the panels are and keep them clear. A panel near the water heater and one near the bathrooms is the minimum.
Skirting also traps moisture. A damp skirt with no ventilation can grow mold, so make sure vents are open. If you cannot get under the home, a plumber can inspect with a camera.
The Water Heater Closet
Mobile home heaters usually sit in a small closet, and a leak there rots the floor quickly. Check the base of the closet for soft spots, rust and stains. Make sure the relief valve discharge pipe runs to a safe place and that the pan, if there is one, is dry.
A closet heater is a tight fit, which makes repairs slower. Plan replacement before failure, since a flooded closet can damage the subfloor.
Protect the Lines From Pests and Weather
- Keep the underside insulation intact and re-tape torn sections.
- Close gaps in the skirting where rodents enter.
- Inspect for chewed lines and wet insulation after storms.
- Keep gutters and downspouts directing water away from the home.
- Keep vegetation away from the skirt.
When to Consider Repiping
If the home has had several leaks in a few years, or if the supply lines are old, brittle plastic, repiping with new flexible lines can end the cycle. Repiping a mobile home is usually simpler than a site-built house because the lines are accessible from underneath.
Talk to park management first, since some parks have rules about alterations. Ask the plumber for a written scope and a price before work begins.
Signs of a Leak You Cannot See
Soft or spongy floors near the bath and kitchen are the classic sign. A musty smell that never leaves, rust stains on the underside of the floor and a water bill that rises with no change in habits all point the same way.
Outside, look for damp soil next to the skirting after dry days, ants or roaches clustered at a spot and a lush green strip along one wall. Inside, check cabinet floors and the closet floors next to the water heater.
Use the meter test described above. If the meter moves with every tap closed, the leak is on the supply side, and the lines under the floor are the first place to look.
Working With Park Management
Tell management in writing when you find a leak, especially one near the lot connection. Ask for the park's repair policy and the name of its approved contractor if it has one.
Keep a record of dates, photos and the names of everyone you spoke with. If the problem is on the park's side of the line, a clear record protects you. If it is on your side, the same record helps with an insurance claim.
A Yearly Under-Home Routine
Once a year, open the access panels and check supply lines, drain lines and insulation. Replace any torn belly cover and close pest gaps. Take photos so next year's comparison is easy.
Ten minutes with a flashlight is cheaper than a rotted floor.
Winter Visitors and Empty Homes
Parks fill and empty with the seasons, and a vacant home can leak for weeks unseen. Close the shutoff before you leave, ask a neighbor to look in, and have someone check the skirting after any big rain. A leak in an empty home gets bigger fast.
When to Call
Call if the floor feels soft, the meter moves with taps closed, you see water under the home or the park cannot confirm who owns the line. Call (954) 697-4920 and say that the home is in a park.
Questions
Quick Answers
It depends on your lease and where the park's line ends. Many parks own up to the lot connection.
Only if there is safe access and no damage. Use a flashlight and watch for pests.
The thin cover under the floor joists that holds insulation and protects pipes.
If water is flowing steadily, yes. Close the shutoff and call.
Leak Under the Home Right Now?
Close the shutoff and call. Say that the home is in a park.
Call (954) 697-4920