Quick answer
Manufactured home water damage repair in Spokane Valley starts under the home: leaking supply lines are found, the belly wrap (bottom board) is opened to drain trapped water and pull wet insulation, the floor decking is dried or replaced where it has softened, and the belly is closed and resealed once everything reads dry.
Signs of water under a manufactured home
A sagging belly wrap
A bulge under the home usually holds water.
Soft floors near plumbing
Bathrooms, laundry and water heater areas first.
A musty smell indoors
Wet insulation under the floor.
Higher water bills
A line leaking under the home.
Damaged skirting
Openings let cold reach the lines.
Dripping from the belly
Water finding its way out of the wrap.
Why manufactured homes need a different approach
Manufactured homes put the plumbing and insulation under the floor, inside a fabric or plastic belly wrap. When a line leaks, the water collects in the wrap like a hammock and soaks the insulation, and you may only notice a sagging belly or a soft spot in the floor above.
Many manufactured homes use particleboard or OSB floor decking, which swells and loses strength when wet. A floor that went soft near a water heater, washer or bathroom often needs a section of decking replaced, not just drying.
Freezing lines under the home are a common winter cause, just as with burst pipes in site-built houses, and heat tape that fails is often the reason.
How we repair water damage in a manufactured home
- 1
Find the leak
Inspect under the home and in the belly; plumbing repaired.
- 2
Drain and open the belly
Controlled openings, water drained, wet insulation removed.
- 3
Dry
Belly cavity and decking dried with daily readings.
- 4
Replace decking
Soft sections cut out and replaced.
- 5
Close and seal
New insulation, belly patched and sealed, skirting replaced.
Belly wrap water and wet insulation
A sagging belly usually holds water. We cut controlled openings to drain it, pull the wet insulation, dry the cavity, then insulate and patch the belly with the right material and seal it against rodents and air.
Torn or missing belly wrap is repaired at the same time.
Supply line leaks under the home
Lines under a manufactured home run close to the belly and can freeze if heat tape fails or skirting is damaged. Leaks there run for a long time before anyone notices.
We find the leak, coordinate the plumbing repair, and dry the belly and decking around it.
Soft floors and particleboard decking
Particleboard and OSB decking swell and crumble when they stay wet. Soft sections are cut out between floor joists and replaced with new decking, then the floor covering goes back.
Bathrooms, laundry areas and around water heaters are where this happens most.
Snow loads, cold snaps and manufactured homes around Spokane
During Spokane's record winter of 2008-09, the National Weather Service put snow loads around 25 pounds per square foot on roofs, and ice over storm drains kept meltwater sitting. Manufactured homes, with lower-slope roofs and plumbing that runs under the floor, feel both: roof seams and vents leak as heavy snow melts, and supply lines in the belly are exposed when skirting or heat tape fails in a long cold stretch.
What you can check and do yourself
Safe to do yourself
- Close the main shutoff if you suspect a leak
- Look along the skirting for gaps or damage
- Check that heat tape on lines is plugged in before a cold snap
- Note any soft floor spots and photograph them
Better left to us
- Opening and draining a belly wrap
- Removing wet insulation under the home
- Replacing floor decking
- Resealing the belly against air and rodents
Do not cut into a sagging belly yourself; it can release a lot of water at once and the patch has to be sealed properly.
Planning costs for manufactured home water damage
Manufactured home jobs are priced on the belly, insulation and decking involved. The national range below is for a typical water job.
- Belly area affectedHow much of the belly holds water and wet insulation.
- Decking replacementSoft particleboard or OSB sections are replaced.
- Access under the homeSkirting removal and crawl clearance affect labor.
- Floor coveringsVinyl or carpet over replaced decking is reinstalled or replaced.
- Plumbing repairLine repairs and heat tape are plumbing work.