Flood Defence Products Brick Defence Airbricks, brickwork and pointing are all key areas for consideration when flood protecting a property. Read more Door Defence Doorways and low level windows are primary points of water ingress into a property. Read more Sewage Defence Sewage system protection, internally and externally, is crucial in providing property flood defence. Read more Understanding Flood Risk Shown on the building below are areas of a property vulnerable to water ingress. Find out how we can help reduce the risk of flood waters from entering your property.