Flood Defence Guidance
for Builders

What criteria need to be applied when choosing between ‘fit-and-forget’ measures, and those requiring the buildings’ current (or future) occupants to deploy equipment correctly in response to flood warnings?

There are multiple entry points for floodwater, not all of which are obvious to the non-specialist: non-return valves may be needed for sewers and domestic appliance pipe work; sealants are required for service ducts.