How to dry your home out after a leak or flood

Flood water and leaks in your home can cause enormous problems, ruining personal possessions and electrical appliances. They can also lead to the growth of mould and cause serious structural damage.

If heavy rain and flooding has caused damage to your home, there are a few key steps you can take early on to help minimise the problems.

Give an annual subscription

Help a loved one make smarter decisions all year round

Sign up now

How to prepare for a flood

Good preparation can help minimise any damage in the event of a flood.

From the GOV.UK website, you can work your way through these recommended actions:

• Make a personal, community, or business flood plan – a personal flood plan can list locations for service cut-offs and contact details for neighbours. It also includes recommended actions, such as moving electronics and storing sentimental items.
• Sign up for flood warnings – to receive these free updates, you'll need to provide a home address and an email address. Alert your neighbours if you receive a warning and move vehicles to higher ground.
• Contact your local council – this will let you see where you can get sandbags if you think you'll need them. You can also buy them from some DIY stores. Hydrosnakes - temporary flood barriers - can work as an alternative.
• Check the long term flood risk for your area – the tool on the GOV.UK website tells you about risks linked to rivers, surface water, reservoirs and groundwater. High risk means the area has a chance of flooding of greater than 3.3% each year.

You might also want to prepare an emergency kit. This will ideally include a mobile phone with a selection of pre-saved numbers, along with medical supplies and a torch.

Be inspired to make home improvements. Sign up for our Home newsletter, it's free monthly

Staying safe after a flood

According to advice issued by the Met Office, you should do the following after a flood:

• Check with the emergency services it's safe to return to your property.
• Wash your hands thoroughly after any contact with flood water, which can contain sewage, chemicals and animal waste.
• Stop drinking your tap water if you notice a change in colour, taste or smell.
• Wear gloves, a face mask and sturdy footwear when cleaning your home.
• If you're drying your home out with heaters or dehumidifiers, ensure there is good ventilation and never use petrol or diesel-powered generators indoors.
• Don't start repairs on your property straight away, as your insurance company should appoint specialists to carry these out. Once repairs start, consider placing sockets and fuse boxes higher up.

Don Cellini from Trustguard Ltd, a Which? Trusted Trader, said safety must be a priority after a flood.

"Turn off electricity and gas only if it’s safe to do so," he said.

"Remove water with pumps or buckets and contact your insurance company straight away.

"Document any damage for insurance purposes.

"Your insurance company should be able to instruct property drying professionals to install dehumidifiers and fans promptly to help dry your home."

Once your home has been thoroughly dried out, he said you should receive a certificate of dryness which is often required by your insurance company to sign off a drying project.

Do insurance companies pay out for flooding?

If you have insurance, contact your insurance company and follow its advice.

If you don't have insurance, consider reaching out to the National Flood Forum on 01299 403055 or via its website.

Make a record of the flood damage in your home by writing details down, as well as taking photos and videos. In every room that has been flooded, mark the height the flood water has reached.

Your insurer should provide industrial dehumidifiers for your home and regularly measure damp levels to ascertain when the property is dry enough to start redecoration. This may well involve taking walls back down to the bricks to see how deeply the moisture has travelled. See how the UK's best home insurers in our 2024 guide.

Use the service provided by Confused.com to help you get a great deal on your home insurance. Head here to compare home insurance quotes.

Can a dehumidifier help a flooded home?

A dehumidifier can be good for removing excess moisture from the air in a damp house. If you've got serious flood damage, it'll by no means solve the issue, but it can help speed up the process of drying out your home.

• Refrigerant (or compressor) dehumidifiers draw in air through a filter and over cold coils, which then condenses and drips into the water tank. These typically work best in a heated room, as the air in the room needs to be warmer than the cold surface inside the dehumidifier.
• Desiccant dehumidifiers use an adsorbent material to draw in moisture from the air. The material is then heated, which causes moisture to drip into the water tank. As they are not dependent on temperature to be effective, they work better than refrigerant models in rooms that tend to have a lower temperature, such as a conservatory or garage.

When running a dehumidifier, keep the windows shut so damp air from outside isn't drawn in – the dehumidifier would then work harder trying to dehumidify a greater area. Keep the doors inside your home open, though, so the air can circulate.

Nicholas Donnithorne, the national technical services manager from Rentokil Property Care, part of the Which? Trusted Traders scheme, said: "If at all possible, remove wet carpets and furniture that are not recoverable, as this reduces the workload for dehumidifiers and starts to ventilate the property.

"Carpet will stop water evaporating from the floorboards and this extends the time they are at risk of decay." 

To see which dehumidifiers have performed well in our rigorous lab tests, explore our guide on the best dehumidifiers.

How to spot a leak

If you suspect there could be a leak in your home and the cause isn't immediately obvious, take a look at your water bills and look for a sharp increase. It's also worth checking your water meter.

Visible signs of water damage include staining on the walls and ceiling, peeling paint and soggy patches on the floor. You should also listen out for running water after you've turned all of your water appliances off.

A professional can help to identify what type of damp you are dealing with and offer advice on how it can best be repaired.

They may need to be appointed by your insurer, so it's important to find this out before you undertake any repairs yourself.

If you need help from a professional, use Which? Trusted Traders to find a reliable damp specialist that has been vetted by our endorsement scheme.

Flooding of rented accommodation

Information on the Citizens Advice website recommends renters should follow these steps after a flood:

• Inform your landlord as soon as possible – this is so they can agree with you on what repair work needs to be done and how long it will take.
• See if you can get a temporary rent reduction or claim for one at a later date – this could be an option if some rooms become inaccessible while the repair work is being done.
• Consider moving out if your home is seriously damaged from flooding – before you do so, make sure to inform your landlord and get them to confirm how long repairs should take and when you can move back in once they're complete.
• Paying for new accommodation – check with your landlord whether they can cover the cost of temporary accommodation or suspend your rent payments if you have to move out.
• Contact your local council if you have nowhere else to live – as flooding is an emergency situation, you should be treated as a priority.

Depending on your circumstances, and how significant the flood damage in your rented home is, you may have a number of options available to you.

For additional support, the Environment Agency has specially trained Flood Support Officers who can help. You can get in touch with them through its 24-hour service on 0345 988 1188 or type-talk on 0345 602 6340.

Which? Limited is registered in England and Wales to 2 Marylebone Road, London NW1 4DF, company number 00677665  and is an Introducer Appointed Representative (FRN 610689) of the following:1. Inspop.com Ltd for the introduction of non-investment motor, home, travel and pet insurance, who are authorised and regulated by the Financial Conduct Authority (FCA) to provide advice and arrange non-investment motor, home, travel and pet insurance products (FRN310635). Inspop.com Ltd is authorised and regulated by the Financial Conduct Authority (FCA) to provide advice and arrange non-investment motor, home, travel and pet insurance products (FRN310635) and is registered in England and Wales to Greyfriars House, Greyfriars Road, Cardiff, South Wales, CF10 3AL, company number 03857130. Confused.com is a trading name of Inspop.com Ltd. 2. LifeSearch Partners Limited (FRN656479), for the introduction of Pure Protection Contracts and Private Health Insurance, who are authorised and regulated by the FCA to provide advice and arrange Pure Protection Contracts and Private Health Insurance Contracts.  LifeSearch Partners Ltd is registered in England and Wales to 3000a Parkway, Whiteley, Hampshire, PO15 7FX, company number 03412386.3. HUB Financial Solutions, for the introduction of equity release advice, who are authorised and regulated by the Financial Conduct Authority (‘FCA’) to provide advice and guidance on financial products for those who have retired or are approaching retirement (FCA Firm Reference Number: 455713). HUB Financial Solutions is registered in England and Wales to Enterprise House, Bancroft Road, Reigate, Surrey RH12 7RP, company number 05125701.4. Alan Boswell Insurance Brokers Ltd (FRN 301), for the introduction of non-investment landlord insurances, who are authorised and regulated by the Financial Conduct Authority to provide advice and arrange insurance contracts. Alan Boswell insurance brokers Ltd is registered in England at Prospect House, Rouen Rd, Norwich NR1 1RE, company number 02591252.Other financial services:Mortgage service provided by London & Country Mortgages (L&C), Unit 26 (2.06), Newark Works, 2 Foundry Lane, Bath BA2 3GZ. London & Country are authorised and regulated by the Financial Conduct Authority (registered number: 143002). The FCA does not regulate most Buy to Let mortgages. Your home or property may be repossessed if you do not keep up repayments on your mortgage.We do not make, nor do we seek to make, any recommendations or personalised advice on financial products or services that are regulated by the FCA, as we’re not regulated or authorised by the FCA to advise you in this way. In some cases, however, we have included links to regulated brands or providers with whom we have a commercial relationship and, if you choose to, you can buy a product from our commercial partners. If you go ahead and buy a product using our link, we will receive a commission to help fund our not-for-profit mission and our campaigns work as a champion for the UK consumer. Please note that a link alone does not constitute an endorsement by Which?.