Most people make the same 5 mistakes. Every hour you get wrong costs more. Here's exactly what to do from the moment water hits your floor.
Water damage doesn't stop when the flood does. Within minutes it soaks into walls, floors, and subfloors. Within 24 to 48 hours, mould begins forming. Within 72 hours, structural materials begin degrading. The decisions you make right now determine how much it costs and how much can be saved.
Water damage is a race against time. Not against the water itself, but against what comes after it. The moment a pipe bursts, a storm pushes water through your foundation, or a washing machine overflows, a countdown begins. Every hour that passes without the right action multiplies the damage.
In Melbourne's climate, mould spores can colonise damp carpet, plasterboard, and timber framing within 24 to 48 hours of exposure. Once mould takes hold, you're no longer dealing with a water damage job. You're dealing with a mould remediation job on top of it, which is a completely different and significantly more expensive problem.
The good news is this: if you move fast and move smart, the vast majority of water damage situations are fully restorable. The carpet can be saved. The floors can be saved. The walls can be saved. The key is knowing what to do and, just as importantly, what not to do.
Before getting to what you should do, these are the mistakes that turn a manageable situation into a full rebuild. They're extremely common because they feel logical in a panic.
This is the most expensive mistake. A carpet that looks like it's drying on the surface is almost certainly still saturated in the underlay and subfloor underneath. Those hidden pockets of moisture are exactly where mould grows first, unseen, until the smell tells you it's too late. Do not wait. Act within the first hour.
Standard vacuum cleaners are not designed for liquid extraction. Using one on wet flooring creates a serious electrical hazard, damages the machine, and does essentially nothing for the moisture underneath the surface. A wet/dry vacuum is the minimum DIY tool for water extraction.
Heat without proper airflow and dehumidification traps moisture in the air and in the building materials. A warm, humid, enclosed room is the single best environment for mould growth. Ventilation and dehumidification are what dry a property. Heat alone makes things worse.
Insurance claims require documented evidence of the extent and source of the damage. If you clean up before documenting, you risk having your claim reduced or rejected. Take photos of everything before moving a single item. Wide shots and close-ups. The water source. The affected rooms. All of it.
Even water from a burst supply pipe can pick up contaminants as it travels through your property. Water from outdoor flooding, stormwater, or anything that has come into contact with sewage is a health hazard that requires professional handling. Never assume water is safe based on its appearance.
This is the sequence that matters. Follow it in order. The first hour is the most critical.
Find the cause. Burst pipe? Shut off the mains water stopcock. Appliance? Unplug it and shut off the supply valve. Stormwater? Redirect or barrier. Then go to your switchboard and turn off power to any rooms where water is present. Water near live electricity is life-threatening. Do not skip this step.
Before touching anything else, take photos and video of the full extent of damage. Capture: every affected room, the water source, the depth of standing water, damage to furniture, walls, and flooring. This documentation is your insurance claim. Make it thorough.
Furniture legs left sitting on wet carpet cause rust stains and dye bleed that permanently damage fibres. Electronics, documents, soft furnishings, and anything of value should be moved to a dry, elevated area immediately. Place aluminium foil or plastic sheeting under legs you can't move.
Use a wet/dry vacuum in slow, overlapping passes across the entire wet area. Empty the tank frequently and keep going until no more water can be extracted from the surface. Then press firmly on the carpet with your hand in multiple spots. If moisture comes up, the underlay is still saturated. Thick towels pressed firmly into the carpet can also absorb surface water if no vacuum is available.
Open every window and door in the affected area. Set up fans to blow across the floor surface, not straight down. Run a dehumidifier if you have one. Then call a water damage restoration specialist. Even if the event seems small, hidden moisture in underlay, subfloor, and wall cavities is almost impossible to fully detect or remove without professional equipment.
Notify your home and contents insurer of the event. Have your photos ready. Write down the timeline of events: when you noticed the damage, what caused it, what actions you took. If a professional restoration team is already on-site, ask them to provide a moisture assessment report to support your claim.
Professional industrial equipment, including high-velocity air movers and commercial dehumidifiers, should be running by this point. Daily moisture readings using calibrated meters will track progress. Do not assume the job is done until moisture levels in the subfloor, walls, and air return to safe baseline readings.
Not all water damage is equal. The source of the water determines how serious the health risk is and what kind of professional response is required.
| Category | Sources | Health Risk | DIY Safe? |
|---|---|---|---|
| Category 1 — Clean Water | Burst supply pipes, rainwater, appliance leaks (clean source) | Low initially — degrades within 24–48 hrs | Yes, if caught fast |
| Category 2 — Grey Water | Washing machine, dishwasher, bathtub overflow, sump pump failure | Moderate — contains bacteria and contaminants | Professional recommended |
| Category 3 — Black Water | Sewage backup, outdoor flooding, stormwater with debris | High — hazardous pathogens, requires decontamination | Do not attempt DIY |
The most common reason water damage becomes a major structural problem is not the water you can see. It's the moisture you can't.
Water travels fast through building materials. It wicks into plasterboard within minutes. It soaks into timber framing within hours. It saturates insulation batts and stays there for weeks. On the surface, the property looks like it's drying. Underneath, hidden pockets of moisture are creating the exact conditions mould needs to colonise.
This is why professional moisture assessment matters so much, especially before any repairs begin. Painting over a damp wall or relaying flooring over a wet subfloor doesn't fix the problem. It traps it. Months later, the mould breaks through. The repair costs triple. The health risks escalate.
Most home and contents insurance policies in Australia cover sudden and accidental water damage. What they don't cover is damage that occurred gradually, or damage that worsened because appropriate action wasn't taken promptly.
This means your insurer will look at:
Burst pipes, appliance failures, and storm events are almost always covered. Gradual leaks from a slow drip or ongoing condensation typically are not. Timing and cause of the event matter.
Insurers can reduce or reject claims if evidence suggests the damage was allowed to worsen through inaction. Documenting the time you discovered the damage and the immediate steps you took is critical.
IICRC-certified restoration reports carry significant weight with insurers. They document moisture levels, affected materials, drying progress, and the scope of required work. Getting a professional on-site fast supports your claim directly.
| Situation | Action |
|---|---|
| Small clean-water spill caught within 30 minutes | DIY is fine with towels and a wet/dry vac |
| Carpet or flooring wet for more than 12 hours | Call a professional — underlay is likely saturated |
| Water source is grey water (washing machine, dishwasher) | Professional extraction and sanitisation recommended |
| Multiple rooms affected or large area | Call a professional immediately |
| Water near walls, under cabinetry, or in ceiling cavities | Professional assessment required |
| Sewage or outdoor floodwater involved | Do not enter — call professionals |
| Musty smell within 24 to 48 hours | Mould likely present — professional assessment needed |
| Making an insurance claim | Always get a professional assessment report |
Understanding what professionals actually do helps you know what to expect and why it takes the time it does.
Using thermal imaging cameras and calibrated moisture meters, technicians map the full extent of moisture penetration in floors, walls, ceiling cavities, and subfloors. This is critical because hidden moisture is the main cause of secondary damage like mould and structural decay.
High-powered extraction equipment removes water at a rate and depth that consumer wet/dry vacuums cannot match. Truck-mounted or trailer-mounted extractors pull water from deep within underlay, subfloor materials, and wall cavities where surface tools cannot reach.
High-velocity air movers accelerate evaporation from surfaces and building materials. Commercial dehumidifiers extract that moisture from the air before it re-settles. The combination dries a property in days, not weeks. Daily moisture monitoring tracks progress until all readings return to safe baseline levels.
Once the property reaches target dryness levels, antimicrobial treatments are applied to all affected surfaces. This eliminates bacteria, neutralises odours, and prevents mould from establishing in residual moisture pockets.
Before the job is signed off, a final moisture check confirms that all readings are within safe parameters. A detailed report documenting all findings, readings, treatments, and drying progress is provided. This is your evidence for the insurer and your record that the restoration was completed to industry standard.
| Action | When | Priority |
|---|---|---|
| Stop the water source | Immediately | Critical |
| Turn off electricity in affected zones | Immediately | Critical |
| Photograph all damage before touching anything | First 5 minutes | Critical |
| Call a professional if area is large, contaminated, or in walls | Immediately | Critical |
| Move furniture and valuables off wet surfaces | Within 15 minutes | High |
| Begin extraction with wet/dry vacuum (if water is clean) | Within 30 minutes | High |
| Open windows, set up fans and dehumidifier | Within 1 hour | High |
| Contact insurer and provide documentation | Within 8 hours | High |
| Monitor moisture levels every 12 hours | Ongoing | Standard |
| Apply anti-mould treatment once surfaces are mostly dry | Within 24 hours | Standard |
Onsite within 1 hour. 24/7 emergency response. Insurance work handled directly. No upfront payment required.
