Florida Scenario Guide
Mobile Home & Manufactured Home Water Damage — Florida
Florida manufactured homes require restoration protocols that differ fundamentally from site-built homes. The OSB belly wrap floor system, polybutylene supply lines, HO-7 insurance policies, and park-owner coordination all shape how you respond and what your coverage will pay.
Manufactured Home Water Damage — Immediate Action
Shut Off Water Supply
Close the main shutoff valve (typically at the meter pedestal near the pad). For a supply line failure inside the belly cavity, you may hear running water beneath the floor. Shut off power to the water heater at the breaker at the same time.
Check the Belly Cavity
Press on the floor near the failure point. A soft or spongy floor section indicates belly cavity saturation. Do NOT cut the belly wrap yourself — this destroys evidence and may be required documentation for your HO-7 claim.
Document Before Anything
Photograph water entry points, floor discoloration, baseboard separation, and any visible belly wrap damage. If in a park, notify park management — some parks have master infrastructure that may be involved.
Do NOT Use Household Fans
Household fans circulate moist Florida air but do not dehumidify. In a belly cavity event, fans accomplish nothing useful. Commercial LGR dehumidifiers are required. Mold onset in wet belly insulation begins within 24–48 hours.
Contact HO-7 Carrier Same Day
Report under your manufactured home policy (HO-7 or mobile home endorsement). Confirm your policy covers sudden water damage and ask about the Citizens $10k MRSR sublimit if you have Citizens coverage.
Call CFDR for Belly-Aware Response
Standard restoration contractors often skip belly wrap assessment entirely. Request a crew experienced in manufactured home belly access, insulation removal, cavity drying, and belly reseal.
Manufactured Home Water Damage — Coverage Table (HO-7 / Florida)
| Scenario | Coverage | Notes |
|---|---|---|
| Sudden supply line burst (copper, PEX, CPVC, polybutylene) | COVERED | HO-7 sudden/accidental; water damage to floors, walls, belly = Coverage A |
| Polybutylene pipe fitting failure — sudden | COVERED | Sudden/accidental even though pipe material is known to fail; water damage covered; pipe repair excluded |
| AC condensate line failure in belly cavity | COVERED | Sudden float switch failure or drain line clog; belly cavity water damage = Coverage A |
| Gradual polybutylene seep — slow pinhole | EXCLUDED | Gradual deterioration exclusion; same as HO-3 sudden vs. gradual standard |
| OSB belly wrap floor system damage | COVERED | Coverage A structural; belly wrap cut + insulation removal + reseal = covered scope |
| Mold remediation in belly cavity | PARTIAL | Citizens $10k MRSR sublimit on mold treatment; belly insulation removal = Coverage A no sublimit |
| Perimeter skirting water intrusion — storm | PARTIAL | If wind-created opening = covered windstorm; surface water entry through undamaged skirting = excluded flood |
| Flood water under/into manufactured home | EXCLUDED | HO-7 excludes flood same as HO-3; NFIP required; NFIP does not cover manufactured homes in some flood-zone parks without permanent foundation |
| Roof leak from storm-created breach | COVERED | Windstorm peril; document storm event; metal roof vs. shingle roof repair distinction |
| Contents damage from sudden water event | PARTIAL | Coverage C personal property; ACV standard common on HO-7; confirm RCV endorsement |
Manufactured Home Water Damage — 6 Critical Scope Areas
OSB Belly Wrap Floor System
The most distinctive manufactured home restoration challenge. OSB (oriented strand board) in the floor cavity delaminates in 24–48 hours in Florida's humidity — unlike plywood, OSB cannot be dried once delamination begins. Wet belly insulation (fiberglass batt) cannot dry in place; it must be removed from below. Belly access requires cutting the vapor barrier from below the home, removing saturated insulation, drying the cavity with commercial equipment, and sealing with new belly wrap material. Belly wrap cut + insulation removal + reseal adds $500–$2,000 to scope beyond the flooring and wall work above.
Interior Floor Covering
Manufactured home flooring — carpet, vinyl plank, laminate — sits above the OSB subfloor. When the belly cavity is wet, moisture wicks upward through the OSB into the floor covering. Flooring is Coverage A under HO-7. Carpet and pad are replaced per standard Florida protocol (pad cannot dry in place at 75–85% RH). LVP and laminate over wet OSB must be removed because the subfloor must be replaced. The matching doctrine applies — if a discontinued pattern cannot be matched, the affected connected run may require full replacement.
Wall Construction and Drywall
Manufactured home walls use thinner drywall (1/4 inch or 3/8 inch) over metal or wood studs. This lighter construction dries faster than CBS block — frame-equivalent drying of 3–5 days per room at Florida's humidity. However, thin drywall buckles and loses structural integrity sooner than 1/2 inch drywall. Wall cavity moisture mapping is still required; thermal imaging applies. Lower drywall and baseboard at the perimeter of a belly event is often the first visible interior indicator of cavity saturation.
Supply Lines in Belly Cavity
In many manufactured homes, supply lines run through the belly cavity rather than inside wall cavities as in site-built construction. Polybutylene (gray flexible pipe, 1978–1995 era) and copper supply lines in the belly cavity are vulnerable to fitting failures. When a fitting fails in the belly, water is contained by the belly wrap — which means a failure can run for hours undetected until visible exterior signs or soft floor sections appear. PB pipe replacement throughout the home ($2,500–$6,000) is a plumbing repair cost, excluded from HO-7 water damage coverage.
Park Infrastructure and Pad
Manufactured homes in parks involve the pad and utility connections, which are typically the park owner's responsibility. If the water event originated from park infrastructure (shared water main, common sewer line), park owner liability may be involved. If the failure is internal to your home (supply line, appliance), the park is not responsible, and your HO-7 responds. Document the failure point clearly before any repairs — this determination drives whether your HO-7 or park owner's GL (general liability) insurance responds first.
HVAC and Ductwork
Manufactured home HVAC systems typically use metal duct runs through the belly cavity — the same space as supply lines and insulation. AC condensate lines in many manufactured homes run through the belly, making condensate failures belly events. A failed condensate drain in the belly can saturate belly insulation over days or weeks before visible interior signs appear. HVAC restoration after a belly event must assess duct condition for moisture intrusion and potential mold colonization inside the ductwork.
Manufactured Home Water Damage — Frequently Asked Questions
Does homeowners insurance cover water damage in a Florida mobile home?
Florida manufactured homes are typically insured under an HO-7 (Mobile Home Policy) rather than a standard HO-3. HO-7 covers sudden and accidental water damage — same sudden/accidental standard as HO-3. Citizens Property Insurance writes HO-7 policies with the same $10,000 MRSR sublimit. Coverage limits and deductibles may differ from HO-3; confirm your policy terms before a loss.
What makes water damage restoration in a manufactured home different?
The OSB belly wrap floor system is the most critical difference. OSB delaminates in 24–48 hours in Florida's humidity. Wet belly insulation cannot dry in place and must be removed from below. Polybutylene supply lines (1978–1995 era) are a known failure risk. Wall construction with thinner drywall dries faster but buckles sooner. Park-owner coordination may be required if park infrastructure is involved.
What is the OSB belly wrap and why does it matter?
The belly wrap is a vapor barrier material enclosing the floor cavity under a manufactured home, containing insulation and often supply lines. When water enters the cavity, the belly wrap traps it. Florida's 75–85% humidity means wet belly insulation molds within 24–48 hours. Restoration requires cutting the belly wrap from below, removing wet insulation, drying the cavity, and resealing.
Are polybutylene pipes common in Florida manufactured homes?
Yes. Polybutylene (PB) pipe was widely installed in manufactured homes built 1978–1995. PB fails at fittings due to chlorine degradation. Failures are sudden and can release significant water into the belly cavity before discovery. PB supply line failures are covered as sudden/accidental under HO-7, but pipe replacement is excluded as a repair cost.
What does manufactured home water damage restoration cost in Florida?
A contained single-room event without belly access runs $1,200–$3,500. Events requiring belly entry run $2,500–$7,000 including belly wrap cut, insulation removal, drying, and reseal. Major events with floor system damage and mold run $5,000–$15,000+. Belly wrap work is a scope item not present in site-built home restoration quotes.
What Happens After You Call
The 5-step restoration process — from emergency dispatch to final clearance
24/7 dispatch — on-site within 60 min
Thermal imaging + moisture meters map every wet area
Industrial truck-mount removes hundreds of gallons/hr
LGR dehumidifiers + air movers run 3–7 days
Dry standard confirmed — reconstruction begins
24/7 dispatch — on-site within 60 min
Thermal imaging + moisture meters map every wet area
Industrial truck-mount removes hundreds of gallons/hr
LGR dehumidifiers + air movers run 3–7 days
Dry standard confirmed — reconstruction begins
Florida mold onset: 48–72 hours
Extraction must begin within 24 hours to stay ahead of mold growth at 75–85% Florida ambient humidity.
Related Guides
Does Insurance Cover Water Damage in a Mobile Home? (Florida)
HO-7 policy coverage, Citizens $10k MRSR sublimit, polybutylene pipe coverage, and NFIP limitations for manufactured homes
Does Insurance Cover Burst Pipe Water Damage? (Florida)
Sudden pipe failure coverage rules that apply across HO-3 and HO-7 policies
Manufactured Home Water Damage? Call Now.
We respond to manufactured home water damage with belly-aware protocols — supply line failures, OSB floor systems, and polybutylene pipe events. Available 24/7.