The first two days of a water loss.
What the Texas Department of Insurance (TDI) and FEMA say about how fast damp materials become a bigger problem.
- Mold can start within a day, says TDI; FEMA says 24 to 48 hours.
- A wet area usually takes two to three days to dry fully.
- Photograph first. Keep damaged items until the adjuster has seen them.
The clock
"Dry the area as soon as you can. Mold can start growing within a day after a leak."source [8]
FEMA's brochure puts it at 24 to 48 hours: mold colonies "can start to grow on a damp surface within 24 to 48 hours." It describes mold and mildew as fungi that spread by airborne spores and thrive in damp conditions, from flooding, sewage backup, plumbing or roof leaks, damp basements and high humidity.source [3]
How long drying takes
FEMA's guidance is to let the wet or contaminated area dry completely, usually two to three days, before you begin to rebuild.source [3]
The same brochure notes a limit on fans and dehumidifiers: they help pull out moisture, but fans can spread mold that has already started growing.source [3]
What to keep and what to throw out
- Don't throw away damaged items until your insurance adjuster has seen them.source [8]
- Discard soaked or moldy carpeting.source [3]
- For porous items: "when in doubt, throw it out." Items wet less than 48 hours may be salvageable if they are cleaned, disinfected, dried and monitored for several days.source [3]
- Photograph first, then discard health-risk items such as perishable food and soft goods like clothing and pillows.source [1]
Protect yourself while you work
FEMA's flood guidance says to wear an N-95 respirator at a minimum, plus goggles and protective gloves.source [1] Mold releases spores when disturbed, so the brochure advises caution when cleaning.source [3]
Higher-risk groups include infants, children, immune-compromised people, pregnant women, people with respiratory conditions, and the elderly.source [3]
If you aren't sure what it is, a licensed mold assessor is the person who determines whether mold is present.source [6] If it is mold, Texas requires a licensed team: TDLR licenses mold assessors and mold remediators, and one license holder may not do both on the same project.source [4] Exemptions exist, such as visible mold under 25 contiguous square feet, and homeowners cleaning their own home.source [4, 5] Check any company at TDLR's license search.source [5]
Ready to act? The checklist puts these steps in order.