Quick answer
You can usually handle a small spill of clean water on a hard floor yourself if you dry it within hours. Call a professional when water has soaked carpet, drywall or insulation, when it came from a sewer or outdoors, or when you cannot confirm that everything is dry.
When DIY is reasonable
- A small spill from a clean source such as a supply line, caught quickly
- Water confined to a hard surface floor
- No wet drywall, insulation or cabinets
- You can dry the area fully within a day
When to call a professional
- Water has soaked carpet, pad, drywall or insulation
- The water is gray or black, from sewage, a washing machine drain, a toilet or flooding outdoors
- The leak is inside a wall, under a slab or above a ceiling
- It has been more than a day and the area still feels damp or smells musty
- More than one room is affected
Why surface drying is not enough
Moisture hides behind baseboards, under flooring and inside wall cavities. Professionals use moisture meters, thermal imaging and air movers with dehumidifiers to confirm materials are dry, following the ANSI and IICRC S500 standard. Without that check, damp materials can feed mold within 24 to 48 hours, according to the EPA.
What goes wrong with DIY
- Fans move air but do not remove moisture without dehumidification
- Wet carpet pad is left in place
- Contaminated water is treated like clean water
- There is no documentation for an insurance claim
Not sure which category you are in? Read water damage categories and classes or call to be connected with an independent company that can tell you what it sees.
Frequently asked questions
Can I use a wet vac and fans?
For a very small clean water spill, yes. For larger losses, fans alone often leave moisture trapped in materials.
How do I know if water is contaminated?
Water from sewage, toilets, washing machines, rivers or storms should be treated as contaminated. When in doubt, treat it as contaminated.
Does DIY cleanup affect my insurance claim?
Take photos first and keep receipts. Poorly done cleanup can make a loss larger, which insurers may question.
What does a professional check that I cannot?
Moisture inside walls, under flooring and in subfloors, using meters and thermal tools, with logged readings.