hi bar Flood Defense System - Domestic and commercial flood defense systems Protecting your investment

Technical information

The barrier comprises a concertinaed barrier made from rigid battens, hinged together, then skinned with a waterproof membrane and attached at the bottom to a housing trench set into the ground, with the top flush with ground level.

The top of the barrier is securely affixed to the underside of a pontoon-like float that is the lifting power for the barrier. The top of the float doubles as the lid for the barrier when in its resting position within the housing trench around the property and is capable of taking the weight of people and vehicles when not in use.

Flood protection

As floodwaters arrive, they enter the flood side of the housing trench and start to lift the float, which in turn starts lifting up the concertina shaped barrier. The whole float and barrier unit acts as the defence against the floodwaters and will continue extending upwards for as high as the flood goes, but no further, all the time using the lifting power of the water itself and no other power.

As the floodwaters recede, the barrier and float will retract slowly back into the housing trench.

Flood protection

Flooding is a major and increasing problem, due to global warming and the increasing pressure for housing and employment, often in coastal or river valley areas. In the UK flooding insurance claims have averaged about £1.5bn per year, but in 2007 this was £3.2bn when 47,000 (domestic) and 7,300 (business) properties were flooded. Around 185,000 businesses and 5.2m homes are at flood risk across England and Wales alone and 400,000 of these are at "significant risk" of flooding (Pitt Report 2008).

There are very many types of temporary flood barrier systems, either to block apertures in properties (doors, airbricks etc.) or free-standing and not attached to any buildings, but they all require manual erection and dismantling after the event. There are only a handful of Self-Erecting flood barrier types in the world and currently only three, including HiBar, in the UK.