Drying Wet Carpet from Leak or Spill

Goal

Properly dry a residential carpet that's been wet from a leak, spill, or appliance failure. Inadequate drying creates mold within 48 - 72 hours, even if the carpet looks dry on the surface. The pad + subfloor hold moisture longer than the carpet itself. Wrong-approach drying creates a much bigger problem than the original wet event.

Prerequisites

• Wet-vac OR carpet extractor with extraction capability
• Air movers (3 - 4 minimum per affected room; more for larger areas)
• Dehumidifier (commercial-grade preferred for serious wet events)
• Moisture meter (essential for verifying complete dry)
• 24 - 72 hours total for typical residential events; longer for larger or persistent

Steps

1. Assess the source.

• Clean water source (broken supply line, rain): standard drying approach
• Contaminated source (toilet overflow, sink drain, dishwasher): treat as biohazard; specialty cleaning + possible carpet replacement
• Sewage backup: refuse; refer to IICRC-certified water damage restoration specialist

1. Stop the water source. Plumbing repair OR moving items off the wet area.
2. Extract standing water + carpet saturation:

• Use wet-vac to remove visible water
• Use carpet extractor on areas to pull water from carpet + pad
• Multiple passes; water comes out as a flow then a slow seep

1. Pull back carpet (if heavily saturated):

• Carpet edge + pad
• Allows direct access for drying the subfloor + pad
• Pad may need replacement if heavily saturated

1. Place air movers. 3 - 4 per room minimum:

• Aim at the wet area
• Angle slightly downward
• Run continuously for 24 - 48 hours

1. Place dehumidifier:

• Commercial-grade 70-pint+ for moderate events
• LGR (low-grain refrigerant) for larger or persistent moisture
• Run continuously until target moisture is achieved

1. Monitor with moisture meter daily:

• Carpet: dry within 24 hours of placement
• Pad: typical 48 - 72 hours; varies with thickness
• Subfloor: critical - 36+ hours typical; some subfloors need active heat
• Wall framing if water migrated: 48 - 96 hours

1. Determine if carpet + pad can be saved:

• Pad heavily saturated > 24 hours: usually replace
• Carpet face: typically restorable if cleaned + dried properly within 48 hours
• Subfloor warped or de-laminated: structural repair, separate scope

Verification

• Moisture meter reads NORMAL across the entire affected area
• No visible water or staining
• No mildew smell after 1 week
• Subfloor + framing dry to spec
• Customer signs the field report acknowledging dry verification

Troubleshooting

• Mildew smell after drying: didn't dry pad or subfloor completely. Pull carpet again; investigate further.
• Pad replaced + smell returns: contamination remained in subfloor. Subfloor cleaning + drying needed.
• Wall framing wet: drilling weep holes in baseboards OR removing baseboards for direct airflow
• Carpet shrinking or de-bonding: heat or chemistry issue. May not be salvageable.

References

• IICRC S500 Water Damage Restoration Standard
• IICRC S100 Carpet Cleaning Standard
• Manuall internal: Standard Hot Water Extraction Service, Persistent Mildew - Diagnostic + Treatment