If your home has flooded before, or you have just found out it sits in a flood-risk area, it is tempting to buy the first flood door or barrier you see advertised. Most people who end up well protected start somewhere else: by understanding how water would actually reach them, and how it would get in.
1. Find out where the risk comes from
Flooding is not one thing. Water can come from a river or the sea, from heavy rain that overwhelms drains (surface water), from rising groundwater, or from sewers backing up. Each behaves differently. River floods may give hours or days of warning and can last a long time; surface water can arrive in minutes and drain away quickly; groundwater can seep up through floors for weeks.
Start with the official flood-risk service for your nation, which shows the risk to your address from each source. Ask neighbours and your council what happened in past floods, and note how deep the water got. This tells you, and any specialist you speak to, what you are protecting against.
2. Sign up for warnings and make a plan
Free flood warnings cost nothing and buy you time. Sign up, then write a simple plan: where you will move valuables and important documents, how to switch off gas and electricity safely, and who will fit any temporary products. Keep insurance details and emergency numbers somewhere you can reach quickly.
3. Get an independent property flood survey
Water rarely arrives only through the front door. It finds its way through air bricks, gaps around pipes and cables, cavity walls, floors, and back up through toilets and drains. An independent surveyor inspects the whole building and identifies every likely entry route, then recommends measures in order of priority.
Independence matters: a surveyor who does not sell or install products has no reason to recommend more than you need. Their report also gives installers a clear specification to quote against, and many grant schemes require one.
4. Decide between keeping water out and recovering quickly
There are two broad approaches, and most good plans combine them. Resistance measures, such as flood doors, barriers, automatic air bricks and non-return valves, aim to keep water out. Recoverability measures, such as tiled floors, raised electrics and water-resistant kitchens, accept that water may get in and help you move back home much faster.
Where water is deep or lasts for days, keeping it out entirely can put dangerous pressure on walls. Your survey should tell you what is safe for your building.
5. Check funding before you commit
Grants are sometimes available after named floods, and some councils run their own schemes. If you are making an insurance claim, ask whether your insurer offers extra money to build back better. Check eligibility before booking work, because many schemes will not pay for anything already done.
6. Choose installers carefully
Ask for two or three quotations based on the survey. Look for products tested to recognised flood standards, ask who will install them and whether they are trained to do so, and agree what happens at handover: a demonstration, a maintenance schedule and warranty paperwork. Keep everything together, because insurers may ask to see it.
Where to go next
Read our guide to independent property flood surveys, check the latest grants and funding, or search for specialists who cover your postcode.
