Toilet Overflowed Onto Hardwood Floors: The First 30 Minutes

First: Stop the Water

The bowl is still rising and the water has already crossed the bathroom threshold onto the hallway boards. Leave the towels for a moment. The first job is to stop more water coming.

Look on the wall behind the toilet for the small valve on the supply line and turn it clockwise until it stops. That shuts off water to the toilet only. If it is stuck or painted over, don't force it. Shut off the main water supply to the house instead.

If water is still running into the bowl from the tank, lift the tank lid and press the flapper down by hand while you find the valve. If a clog is the cause, do not flush again. Every flush puts more water on the floor.

Then: What Came Out of the Bowl?

Look at what overflowed before you kneel in it. If the bowl had waste in it, or water pushed up from the drain, treat it as sewage.

If sewage is involved, the CDC's advice is to wear rubber boots, rubber gloves and goggles. Its cleanup guidance also says to keep children and pets away from the affected area until cleanup has been completed (CDC, Guidelines for Cleaning Safely After a Disaster). That page was written for floods and disasters, but it names sewage directly. What to keep and what to throw out after sewage is in sewage backup: what goes and what stays.

Contain It and Get the Water Up

Once the water has stopped, the aim is to keep the wet area from growing and to get water off the wood before more of it soaks in.

1. Dam the doorway. Lay towels or bath mats along the edge of the water, especially where the bathroom meets the hallway, so it stops spreading onto dry boards.
2. Lift what sits in the water. Bath rugs, the hamper, the bin, anything on wooden legs. Move it to a dry room, not onto another wet patch.
3. Get the water up. A wet vacuum if you have one, then a squeegee into a dustpan, then towels swapped out as soon as they are soaked. A mop tends to spread water as much as it lifts it.
4. Work the seams. Go over the gaps between boards, the threshold and the area around the toilet base, where water runs down out of sight.
5. Move air. Open interior doors and run what fans you have across the floor.

The EPA's mold guidance covers the layers you can't see: "If the under-flooring is wet, it should be dried using a vacuum or by exposing it to the air." If the water reached carpet in the next room, its advice is: "To dry carpet and backing within 48 hours, remove water with a wet vacuum, pull the carpet and pad off the floor and dry them using a fan to blow air over them" (EPA Mold Course, Chapter 4).

Why Wet Hardwood Cups

The National Wood Flooring Association puts it simply: "If your floors gain moisture, they can cup. Cupping occurs across the width of the floorboard, with edges that are raised on each board and centers that are lower than the edges" (NWFA, Problem Prevention).

Its page does not say how fast a floor cups or what happens to it afterwards, and the surface won't tell you either. Ask for moisture readings in the wood and the subfloor, and for the reasons behind any plan to dry in place or replace.

The clock that matters is drying. "In most cases, mold will not grow if wet or damp items are dried within 24-48 hours," says the EPA (EPA Mold Course, Chapter 4). That is a target for getting things dry, not a schedule for your floor. Ask whoever measures it what they expect, in writing. More on how drying is judged is in how long water damage restoration takes.

When to Call Someone

The bathroom looks dry, the towels are in the wash and a fan is running. It is tempting to call it done. Get the floor looked at if any of these are true:

• The bowl had waste in it, or water came up from the drain
• Water reached a hallway, bedroom or living area
• You can see any cupping when you look across the floor at a low angle
• Water ran under a baseboard, a threshold or the vanity
• The bathroom sits over a finished room, a basement or a crawl space
• The water sat for a while before anyone found it

Mr. Fresh is a family-owned business that has served Solano County and the Bay Area since 2013, with IICRC-certified technicians. It offers water damage restoration and emergency water extraction with 24/7 dispatch from Fairfield to Vacaville, Green Valley and the rest of the area. Ask for the scope in writing before work starts. The rest of the first day is in the first 4 hours after water damage.

Photos and the Insurer

Angi's guidance is to "document damage with photos for insurance purposes before restoration begins," and to contact your insurance company before starting repairs, because the carrier will want a restoration professional to assess the damage first (Angi). Once the water is off, take these:

• Source: the toilet, the supply valve and line, and the base of the toilet
• Standing water: a wide shot of the room with water still on the floor, with the doorway or vanity in frame
• Spread: where the water went, including thresholds and baseboards
• Damage: close-ups of wet boards, baseboards and the bottom of the walls
• Below: the ceiling underneath, if there is a room below

Coverage depends on the policy and the cause. Angi's summary: "Homeowners insurance may cover water damage if it is sudden and accidental. However, damage that is gradual, such as from slow leaks, or results from a lack of maintenance, negligence, or general wear and tear is typically not covered" (Angi). If the water came up from a sewer line, Triple-I says sewer backups "are not covered under a typical homeowners insurance policy, nor are they covered by flood insurance," and that the coverage is bought separately or as an endorsement (Triple-I).

Policies differ. The California Department of Insurance tells consumers to read the exclusions in their insurance contract (CDI, Residential Insurance guide). Check yours, ask your agent, and keep the photos in one folder you can hand to the adjuster.

Frequently Asked Questions