What to Do Immediately After a Flood in New Zealand
A step-by-step emergency guide for homeowners and businesses — from the first minutes to full property recovery.
With the diversity of New Zealand’s climate, from a storm in Northland to snowmelt in Canterbury, the risk of flooding is a possibility for any location in New Zealand. When a property is flooded, a burst water pipe, storm surge, or a heavy downpour, what you do in the first few hours is vital. This guide details what to do right after a flooding incident, step by step, to protect your family, secure the property, and reduce the long-term costs of repairs.m to provide coverage of our findings and your restoration.
Step 1: Ensure Safety Before You Do Anything Else
Flood water poses a certain danger that most people do not recognise. Safety is your priority, and the floodwaters are a danger to people’s health. In New Zealand, history has shown that injuries and fatalities from flooding are numerous, primarily caused by people rushing back to their properties without considering the risk.
Electrical danger — turn off the power at the mains
Do not attempt to restore power to the flooded premises until a licensed electrician or emergency responder is present. Floodwaters and electricity do not mix. If you are unable to gain safe access to the mains board, then you will need to call your lines company or dial emergency services.
Immediate safety checks
• Flood emergency services or police must clear re-entry to the property. They are first responders. You will be instructed when to re-enter.
• If you are outside the flood zone, you can turn off mains electricity safely. Please do so.
• If you suspect a gas line or a gas line above the flood line
• Cracked walls, sagging ceilings, pipe works, doors. Watch
• Stay away from tap water consumption. First, you must wait for your local council
• Flooded areas require rubber boots and waterproof gloves. Masks are required, including but not limited to all flood areas
• Flood water even 15 cm above the ground can be really dangerous and can knock you off your feet.
• Children and pets are to be kept far away from the affected area during the flood emergency response.
Floodwater is contaminated
Flood and storm waters in New Zealand are known to carry pathogens, raw sewage, toxic chemicals, and all other nasty stuff. Be sure all flood water is treated as contaminated, and especially those that come through this or that drain, are of dark or foul appearance. Such water is described as “black water” and requires only certified professional flood cleanup services.
Step 2 – Comprehensive Documentation. Insurance Claim.
Documenting flood damage in detail is of utmost priority before you even think of moving, removing, or cleaning anything: for an insurance claim and an EQC (Toka Tū Ake) application in New Zealand. Worst case, you do document cleanup before your claim, which is costly and one of the most common mistakes flood victims make.
Comprehensive Guide on Documenting Flood Damage
• Record videos and take photographs of the walls, floors, ceilings, lights, and furniture in every room and from different angles, and note the date on the image.
• Document the water level, and when it starts to recede, use a pencil to mark the water level on the wall.
• Make detailed lists of the damaged materials and personal belongings, including the categories of items, like appliances, electronics, furniture, and clothing, and personal belongings, and include estimated values.
• Materials and belongings that are damaged and flood-related should be kept, like any structural materials, underlay and carpet. They should not be thrown away until inspected by your insurance provider.
• Costs incurred from any emergency repairs and accommodations should be documented as well.
Reach out to your insurance provider without delay.
When it is safe to do so, contact your contents and home insurance provider. It is recommended to reach out to your provider as soon as possible; every NZ policy specifies a time frame for notifying a claim. If a natural disaster causes a flood, you are eligible for EQCover. You can reach out to Toka Tū Ake EQC by contacting 0800 DAMAGE (326 243) or by visiting eqc.govt.nz.
Step 3 — If Applicable, Stop the Water Source (If Safe to Do So)
If the case is a natural flood, your focus should be on protecting your property from any further ingress. However, if the water source is a burst pipe, a closet overflow, or a domestic appliance such as a washing machine, it is equally important to focus on the water source.
Internal water sources
• Locate and close your main water stopcock, usually near the water meter at the front or side of the property
• For burst hot water cylinders or pipes, turn off the hot water cylinder at the isolation valve.
• If the burst is in the mains supply line on the street, contact your local council or Watercare.
Protecting against further flood ingress
• Use sandbags or flood barriers at doorways and other low entry points if the water is still rising.
• Move valuables, important documents, and irreplaceable items to upper floors or a higher position.
• If you can do so safely, unplug appliances and move them to a higher position.
• Cover vents, air conditioners, and other openings with plastic sheeting and tape.
Step 4 — Start Water Extraction as Soon as Possible
When it comes to minimizing flood damage, time is everything. The longer the water sits on your floors, walls, and furnishings, the higher the risk of:
• Mould growth — mould can start to colonize wet surfaces in 24-48 hours.
• Structural Damage — wet timber framing, particleboard, and MDF swell and warp, resulting in rapid structural Damage.
• Subfloor damage — water can penetrate the floor boards and compromise the joists and the foundation.
• Contamination spread — flood water is full of bacteria and other pathogens that will spread to previously unaffected areas.
• Unpleasant odors — a musty or sewage smell can become persistent and extremely difficult to eliminate if the flood damage is left untreated.
Do
• If available, a wet/dry vacuum will work best.
• Once the risk has passed, ventilation can be improved by opening windows and doors.
• To speed up the drying process, use fans and dehumidifiers.
• To allow the sub-floor to dry, lift the carpet and underlay.
• Wet rugs and soft furnishings should be removed and placed outside in the sunlight.
• Contact a flood restoration professional as soon as possible.
✗ Don’t
• Don’t use a normal household vacuum, as this can be a fire and safety hazard.
• Don’t operate in flood-affected areas.
• Don’t walk on wet carpet more than is necessary — it will cause further Damage.
• Don’t use gas heaters indoors, as this is dangerous without ventilation.
• Don’t start bleaching everything, as it can cover up Damage and void your Insurance.
• Don’t procrastinate — every hour is crucial.
Why DIY solutions will often be insufficient
The household materials and equipment available for DIY flood restoration (mops, towels, consumer wet vacuum cleaners) are insufficient to extract the volume of water that will saturate the carpet underlay, wall cavities, and subfloors. Professional restoration companies have high-grade, industrial-grade equipment that includes water extractors, air movers, and commercial dehumidifiers, designed for rapid moisture removal and drying at a level probably multiple orders of magnitude greater than the best DIY methods. Rapid drying reduces the risk of mould growth and lowers restoration costs.
Why Time is so Important During the First 72 Hours
The longer it takes for a flood to pass, the more water damage a property will suffer. This is especially evident in water damage restoration in New Zealand.
[0-2 hours] Immediate Danger Zone
Water flows through porous materials, including carpets, underlay, and furniture. Drywall begins to soften and loses structural support. If contaminated by grey/black water, biological hazards start to form. This is the time for the fastest and most cost-effective intervention.
[2-8 hours] Accelerating Damage
Wood begins to swell and warp. Metal surfaces may show initial signs of tarnishing and rusting. Upholstery begins bleeding staining dyes. A variety of odours begin to form. Electronics and documents will be permanently damaged if they have not been removed.
[8-24 hours] Serious Structural Risk
Plasterboard begins the disintegration process. Timber framing and subfloors swell. There is a significant intensification of odours. Some materials become unsalvageable. Professional intervention at this stage is still highly effective.
[24-48 hours] Mould Risk Window
Mould will begin to colonise wet surfaces, particularly carpet, drywall, and timber. Structural replacements will be required for some elements. At this point, effective mould treatment is a critical component of flood restoration.
[48-72 hours and Beyond] Major Remediation Required
Significant visible mould growth will result. Structural materials will often need to be fully replaced rather than dried. Restoration costs will be high. The longer the action is delayed, the more extensive the recovery will be and the greater the costs will be.
Step 5 — Flood Damage Prevention: The Threat of Hidden Flood Damage
Flooding can cause many problems, but one issue is often neglected: mould. The buildup of humidity in New Zealand is exactly what mould needs to spread. Mould is incredibly detrimental to the health of both the occupants of the house and the house itself. The range of health issues caused by mould can be respiratory problems, allergic reactions, and, in the most extreme cases, toxic exposure. The Damage to the house can be irreversible.
Conditions for mould growth
• Moisture: Any surface with RH above 60% for 24 hours or more can pose a mould risk.
• Organics: Food sources for mould growth include wood, plasterboard, carpets, upholstery, paper, etc.
• Warmth: Temperatures in New Zealand are ideal for mould growth year-round.
• Stagnant air: Mould growth is accelerated in enclosed areas (e.g. wall cavities, under-floor areas, and closed rooms) where air does not move.
How flood restoration avoids mould
Preventing mould is a multi-step process that goes beyond just drying, and it is something that New Zealand flood restoration companies have in common.
• Industrial dehumidifiers dry air and materials more efficiently than regular home dehumidifiers.
• Moisture detection cameras are used to find water in wall/ floor cavities.
• Professionals treat surfaces with mould-inhibiting chemicals to prevent mould.
• Air scrubbers are used to remove mould spores from the air during restoration.
• Flood restoration teams will come back to test the moisture content until it is safe.
Step 6: What is salvageable after a flood?
Being able to differentiate between salvageable and unsalvageable flood-damaged items helps prioritise efforts and eliminate waste. This is one of the many tasks that professional flood restoration teams excel at, and can determine salvageability quickly and accurately.
Generally, items that can be restored with professional help include:
• Carpets and rugs, if the treatment is done within 24-48 hours using clean water for the water damage,
• Upholstered furniture that has been dried quickly and professionally restored,
• Hardwood floors that have been properly dried to avoid cupping and warping,
• Clothing and other soft furnishings,
• Glass, metal, plastic and other non-porous items,
• Documents and photos, which can be restored with specialized drying or freeze-drying methods.
Items that usually have to be replaced include:
• Carpet underlay, because it absorbs and retains water, and because it holds bacteria.
• Particle board and MDF because they swell and break down irreversibly when they get wet,
• Plasterboard (GIB board) that is contaminated and has been soaked in water,
• Insulation that becomes wet and then harbors mold, and loses its effectiveness,
• Grey or black water-soaked mattresses, and
• All food items that have been in contact with flood water.
Step 7 – Flood Insurance in New Zealand
The two-tier system for natural disaster cover in New Zealand is not well known to most homeowners. Awareness of the system will help ensure that you get the full entitlement you’re owed.
EQCover (Toka Tū Ake EQC)
If your flooding results from a natural disaster, such as storm surge or river flooding, your property is likely to fall under New Zealand’s EQC scheme. The scheme was updated in 2022 to provide EQCover of up to $300,000 (plus GST) for residential land and home damage caused by natural disasters. To be eligible, you need to have a standard house insurance policy.
Home Insurance
Your home insurance will assist you with Damage that exceeds the EQC cap, as well as other burst pipe/appliance damage that EQC does not cover. Before commencing with restoration, you should inform your insurance company, as they will send their own adjuster. Failing to do so will void your claim.
Key steps for a successful insurance claim
• After the flood, contact your insurer and EQC as soon as possible.
• Do not remove the damaged items before they have been assessed.
• Submit all your photos, videos, and documents.
• Obtain a damage assessment report from a restoration professional.
• Make sure you note down all costs related to temporary accommodation, food, and any emergency expenses.
• Ask for your insurance policy documents to know what your insurance policy covers.
• You can dispute a claim decision with the Insurance and Financial Services Ombudsman (IFSO) if your claim is rejected.
Complete Flood Response Checklist for NZ Homeowners & Businesses
To ensure your flood response is comprehensive, use this checklist as your guide.
Personal safety
Make sure you identify any risks, including electrocution and structural hazards, before entering the flood-affected area, and switch off the mains power. Wear protective clothing. Keep family and staff clear of the flood-affected area.
Call emergency services if needed.
If there’s a life-threatening emergency, call 111. If you are in a declared emergency zone, get in touch with the Civil Defence. Check for any weather alerts on the MetService site.
Document all Damage before touching anything. Photos and videos of every room, each item, and every water level mark are critical for insurance and EQC applications.
Communicate with your insurer and EQC.
As soon as it is safe and before doing any cleanup, inform your home insurer and EQC (Toka Tū Ake). Major cleanup activities should not be undertaken until instructed otherwise.
Contact a specialist company for flood restorations
The best option is to contact a company that qualifies for water damage restoration as soon as possible. In a situation like this, it is extremely important to initiate water extraction and drying. A small delay can increase the risk of mould development and the total restoration costs.
Take temporary measures until assistance arrives.
For ventilation purposes, dry areas should be populated with salvaged items. Carpeting and rugs should be removed to dry areas if safe, and windows and fans should be opened to reduce the moisture load.
If needed, seek out temporary lodgings.
If your dwelling is not livable, you should be concerned with finding alternate temporary lodging. Be sure to save your receipts, as your insurance policy covers expenses related to additional living accommodations.
Adhere to restoration directions from the flood restoration company
Cooperate with the flood restoration company to manage extraction, drying, the sanitization procedure, and odour control. It is best practice to avoid returning to the residence until moisture levels are determined to be within the safe range.
How Advanced Facility Care NZ Assists Post-Flood
In New Zealand, the first point of contact when flooding strikes your home or business is Advanced Facility Care. Our team is available 24/7 and industry-trained to give you peace of mind. Flooding is a multi-step recovery process, and we guide you through every step. From the first call to completing the final safety check, we walk you through every step.
🕐24/7 Emergency Response – We are here for you at any time
💧Industrial Water Extraction – High-powered equipment for swift water removal
🌿Mould Prevention Controlled drying and antimicrobial treatment
✅Odour Control – Deodorisation for safe and fresh indoor air
🛋️Carpet & Furnishing Restoration – The professional recovery of flooded soft furnishings
🏢Residential & Commercial – From homes and offices to retail, schools, healthcare and more
Our Flood Restoration Process
At Advanced Facility Care, we follow a clearly defined, systematic process for every flood restoration project across New Zealand.
– Rapid emergency assessment
Our team will promptly arrive on-site and assess water damage, moisture levels, and contamination before we undertake any restoration work.
– Safety-first approach
We ensure the site’s safety by identifying and resolving all electrical, structural, and health hazards.
– Industrial water extraction
The use of powerful truck-mounted and portable extraction devices enables quick removal of water and saturated moisture from soft furnishings and floor systems.
– Drying and dehumidification
A controlled drying process for all structural elements will be implemented using air movers and dehumidifiers.
– Antimicrobial sanitisation
Every affected surface will be treated with an antimicrobial agent to eliminate bacteria and prevent mould.
– Odour neutralisation
We will implement deodorisation treatments to improve air quality and provide a fresh, clean environment.
– Ongoing moisture monitoring
We will test and revisit your site until moisture levels are safe and pre-flood standard
– Restoration documentation
– We will provide you with a report to support your insurance claim, detailing the process we followed and our findings
Why Advanced Facility Care for Flood Restoration in NZ?
Specialists, not cleaning generalists.
Our team consists of experts in water damage restoration, rather than generalists who handle flood jobs as a side project.
National clientele
– Our clientele includes New Zealand shopping malls, schools, healthcare facilities, retirement villages, public transport, and corporate clients.
Custom management
We don’t have a one-size-fits-all strategy. Each flood event is evaluated for location, type, water, damage extent, and operational needs.
Environmentally-friendly
We use eco-friendly products and practices for our restorations.
Insurance made easy
With our detailed documentation and reporting, we make insurance claims easier for you.
Minimum downtime
We ensure that you can continue normal operations as soon as possible.
Client-centered approach
We keep you in the loop at every stage, so uncertainty is the last thing on your mind, unlike other restoration companies.
Everywhere in New Zealand
Flood restoration services in Palmerston North, Auckland, and beyond are within our reach.We’re as urgent as the flood damage. Call Advanced Facility Care for an immediate callback and free emergency evaluation.