Check the structure, keep the power off, record the damage and stay safe on the first walk-in, before any cleaning starts.
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Before you go back into a flooded house, check it from the outside, make sure the power is off and the gas is closed, and wear boots and gloves. Then walk through slowly, room by room, recording the damage before anything is moved. Do not enter if the roof sags, a wall leans or new cracks have appeared. Do not touch anything electrical that has been under water, and keep children out until the mud is gone. This checklist covers the first walk-in only. The clean-up itself starts after it, and the flood clean-up, repair and prevention hub shows which guide covers each step.
The urge to rush home the moment the water drops is natural, but the most dangerous hours of a flood are often the ones just after it. Roads may still be cut, drains are full, and a second wave of rain can bring the water back. Go back only when the authorities say the area is safe, and check river levels on JPS Public InfoBanjir if more rain is forecast.
Plan the first visit for daylight, and do not go alone. A torch is useful, but natural light shows cracks, the water line and hidden hazards far better. Tell someone when you expect to be back. If you rent, tell the landlord you are going in, because they will want to know the condition of the unit too.
You do not need much for a first look, but going in with bare feet and a phone is how people get hurt. This short kit covers the walk-in itself, not the full clean-up.
| Bring | Why |
|---|---|
| Rubber boots and thick gloves | Mud hides broken glass, nails and debris; floodwater and silt are contaminated |
| Long trousers and long sleeves | Fewer scratches and less skin contact with dirty water |
| A face mask | Mud and mould dust rise as things are moved |
| A torch | The power must stay off, and stairs, store rooms and toilets are dark |
| A charged phone | Photos and video of the damage, and calls to TNB or the insurer |
| Notebook or a notes app | A running list of damaged items, room by room |
| Drinking water and a first-aid kit | Cuts are common on the first day and should be cleaned and covered at once |
| A stick or long-handled tool | To check the floor ahead of you and to move debris without using your hands |
Walk round the outside first. The US Environmental Protection Agency's flood guidance lists the warning signs of structural damage: a roof that sags in the middle or at the ends, walls that are not straight, new cracks in the outside walls, and walls or supports that lean. If you see any of these, assume the building is unsafe and do not go in until a qualified professional has checked it.
In Klang Valley terraces, look at the car porch slab and the front boundary wall. Fast water can wash soil out from under a porch, leaving a hollow that collapses under a car. Check retaining walls on sloping sites, trees that now lean, and the drain in front of the gate, which is often still blocked with silt. An autogate that stopped in the flood should not be switched back on until it has been checked; the autogate problems guide explains why water in the control board matters. In a condo or flat, follow the management's notices on lifts, car parks and lobby access before you go up.
Electricity is the hazard that kills. US EPA guidance is not to enter a flooded home until you are sure the electricity is off, because standing water and wet sockets can give a shock. TNB's flood advice is to keep the main switch at the distribution board off before any cleaning, and never to touch equipment or cables that have been under water, even if they are insulated.
If the distribution board is inside and you would have to walk through water to reach it, do not try. Call TNB CareLine 15454 and ask for the supply to be cut. If the house has solar PV, it should be switched off as well, because it can feed power back into the house wiring. Keep away from fallen lines and leaning poles outside.
For gas, close the valve on the LPG cylinder before you start, and keep the cylinder upright and outside if it floated or fell. If you smell gas inside, do not switch anything on or off, do not light anything, open the doors and leave. Generators belong outside the house: US EPA warns that generators and gas stoves produce carbon monoxide, which can kill in minutes in an enclosed space.
Open the door slowly. Doors swell in floodwater and may stick, and furniture may have floated against them. Once inside, open doors and windows to let air through, but do not run fans or appliances. Move slowly, and test the floor ahead with a stick: mud is slippery, tiles may have lifted, and timber floors may be soft.
Watch for animals. Snakes, rats and insects shelter in flooded houses, especially in kitchen cabinets, under beds, in store rooms and in piles of debris. Give them space and move debris with a tool, not your hands. Look up as well as down: a gypsum ceiling that has soaked up water is heavy and can come down without warning, so keep out from under any board that sags or drips.
Use this table as you walk through. The aim of the first visit is to see and record, not to fix. Most of the "do not" column exists because the action destroys evidence or creates a hazard.
| Room | Check | Do not |
|---|---|---|
| Living room | Water line height on walls, sofa and cabinets, swollen doors, lifted tiles | Switch on lights or the TV |
| Kitchen | Cabinet carcasses, fridge and food, LPG cylinder, sink and floor trap | Eat or keep food the water touched |
| Bedrooms on the ground floor | Mattresses, wardrobes, clothes in low drawers | Sleep on a mattress that was under water |
| Bathrooms and toilets | Sewage backflow, floor traps, the water heater | Flush until you know the sewer is clear |
| Store room and staircase | Cardboard boxes, documents, the underside of the stairs | Carry heavy wet loads down wet stairs |
| Distribution board area | Whether water reached the board (look, do not touch) | Reset any breaker |
| Porch and yard | Porch slab, drains, gate motor, outdoor aircon unit | Start a flooded car, motorbike or e-bike |
If sewage came up through the toilet or floor trap, the sewage backing up in heavy rain guide explains why it happens and what to check before using the toilets again.
Take photos and video before a single item is moved. Start outside, then go room by room: the water line on each wall, close-ups of damaged furniture and appliances with their brand labels, the floor, the ceiling and the inside of cabinets. Keep the date on the files, and write a list of every damaged item as you go.
US EPA guidance for renters makes the same point: take pictures of your items before throwing them away. Keep damaged items until your insurer has seen them or said they can go, and check your own policy schedule for flood cover rather than assuming either way. The full checklist for a claim is in documenting flood damage for an insurance claim.
Treat any food, drink or medicine that the floodwater touched as unsafe, including sealed packets with paper or cardboard outers. Floodwater carries sewage and chemicals, and packaging does not keep them out. Fridge and freezer contents that were without power for a long time should also go. Ask your pharmacist or clinic about replacing soaked medicines, especially for chronic conditions.
Do not assume the tap water is safe. Check with your water operator or the district health office about water safety in your area, and follow any boil-water advice they issue. Use bottled water for drinking and for cleaning wounds until you are told otherwise.
Malaysia's Health Minister has reminded the public to watch for leptospirosis, especially when floodwaters recede, as reported by The Sun. The bacteria spread through water and mud contaminated by rat urine, which is why boots, gloves and covered cuts matter. See a doctor if you develop a fever, muscle aches or headache in the days after the clean-up, and tell them you have been in floodwater.
US EPA guidance adds three points. People with asthma or other breathing problems, people with weakened immunity, children and pregnant women should not take part in flood clean-up. Floodwater can cause wound infections and rashes. And mosquitoes multiply quickly after a flood, so empty buckets, pots, tyres and anything else that holds standing water around the house.
Flooded lithium-ion batteries can catch fire, sometimes days later. US EPA guidance is to remove flooded e-bikes, e-scooters and battery packs from the house, and to push or tow a flooded electric or hybrid car rather than turn it on. The same caution applies to a petrol car or motorbike that was submerged: starting an engine with water inside can wreck it. Leave vehicles for a mechanic or your motor insurer.
Power banks, laptops and phones that were under water should be kept apart from each other, outside if possible, and taken to an electronics recycler rather than charged to see whether they still work.
Once you have checked the house and recorded the damage, the clean-up can start. The order matters, because each step makes the next one easier:
If the house was damaged by a storm but not by floodwater, the after-storm home inspection checklist is the better walk-round, because it starts from the roof and the trees.
ClickBina is an experienced KL & Selangor contractor. Once you have done the walk-in, our crew can take over the physical work: mud and silt removal, washing and disinfection, drying, debris and furniture disposal, and then the wall, floor and paint repairs. We do the non-electrical work.
Before the house is re-energised, testing must be done by an electrical contractor registered with Suruhanjaya Tenaga. For a full picture of what a crew does from mud-out to handover, see the flood clean-up service guide.
How we wrote this: the US EPA pages are a foreign source, used where no Malaysian page could be reached; Malaysian Health Ministry pages were not reachable when this page was written. Electrical advice follows TNB's published flood guidance. This page gives no prices and no fixed timings.
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