Waterproofing emergencies

Electricity. Water plus outlets, a furnace, a water heater or a panel is a genuine electrocution risk. If you cannot shut off power to the basement from a dry, safe location, call your utility or an electrician. This is not a place to save an hour.

Document before you clean. Photograph and video every wall, the floor, the water depth against something for scale, and every damaged item, with dates. If you later make a claim, this is the evidence. Keep receipts for everything you spend on drying and temporary repairs.

Understand your coverage now, not later. Floods are not covered under standard homeowners and renters policies — only a separate flood insurance policy covers flood-related losses (Insurance Information Institute). Standard NFIP residential maximums are $250,000 for the structure and $100,000 for contents. Whether groundwater seepage or a sewer backup is covered depends entirely on your specific policy and any endorsements you carry — read your declarations page and call your agent rather than assuming either way.

Drying and mold. Get water out, get air moving, and get humidity down. EPA advises fixing the water problem first, because mold cleaned without addressing moisture comes back. EPA also says a moldy area under about 10 square feet can usually be handled yourself; above that, get a professional remediator. Porous items that stay wet — carpet, padding, drywall bottoms, cardboard — are usually a loss.

Beware of the crews that show up. Contractors canvassing a flooded neighborhood are common. If you sign a contract in your home for $25 or more, the FTC Cooling-Off Rule generally gives you until midnight of the third business day to cancel in writing, with exceptions listed on the FTC's page. Do not sign anything under pressure while standing in water.

How to choose

Power off before you step in

If you can't confirm the basement circuits are dead from a safe, dry position, call the utility or an electrician.

Photograph before you touch anything

Dated photos and video of water level, walls, floor and every damaged item. Then keep every receipt.

Call your insurer early

Report first, decide on repairs second. Ask specifically what your policy says about groundwater seepage and sewer backup — the answer is policy-specific.

Dry aggressively, then find the cause

Air movement and dehumidification now; diagnosis and permanent fix once it's dry. Skipping the diagnosis guarantees a repeat.

Don't sign a repair contract in the panic window

Emergency water extraction is one thing. A five-figure waterproofing system signed the same day, under pressure, is another.