Flood Defence Walls

With the planet warming up giving us some issues with heavy rain and flash floods we need to protect our assets. To this end we have developed a range of fast construction concrete interlocking block flood defence walls.

Most flood defence wall are less than 2m. We have designed four simple walls with heights of 600mm, 800mm, 1200mm, 1600mm

We have also design 3 membrane flood defence wall 900mm, 1500mm and 2100mm.

The membrane walls are constructed from two 300mm concrete lego block walls with a water proof membrane.

We can help you design your flood defences if required.

Simple Interlocking Block Flood Defence Walls

The simple flood defence walls use a concrete interlocking block with enough mass to act as a gravity flood defence wall.

The foundation design will depend on the topographical and site investigation information.

The joints of the blocks need to be sealed to stop water leakage through them. There are many products on the market to do this effectively.

The top of the wall can use flat top blocks to improve the finish

The wall can be built by a local contractor from the design drawings.

600 (w) x 600mm (h) Block Wall

Flood Defence Walls

600 (w) x 1200mm (h) Block Wal

800 (w) x 800mm (h) Block Wall

Flood Defence Walls

800 (w) x 1600mm (h) Block Wall

Membrane Flood Defence Walls

The membrane construction method used two 300mm blocks placed side by side. A waterproof membrane is placed between the two skins of blocks. The capping block then holds the two skins of the wall together.

The wall can be built by a local contractor from the design drawings.

Flood Defence Walls

600 (w) x 900mm (h) Block Wall

Flood Defence Walls

600 (w) x 150mm (h) Block Wall

Flood Defence Walls

600 (w) x 2100mm (h) Block Wall

Interlocking Block Sizes


Interlocking concrete block 1800, 600, 600
Concrete Interlocking block inclined retaining wall

Compare Prices of Retaining Wall Types

Which retaining wall type is the most economical to build? We have written an article on retaining wall price comparisons. The article details the types of retaining wall and gives you a price of each type for comparison. 

Retaining Wall Design Service

The design of a retaining wall requires knowledge of the retaining material, the water table, the ground bearing capacity and any site constraints. The design requires a ground investigation and a structural engineer to ensure the design is fit for purpose.

We offer a full design service from carrying out the ground investigation to final working drawings.

Other Retaining Wall Types

If You Are Not Sure Ask Us a Question

Complete the form below to ask a question or request support. I normally answer questions and respond to requests as soon I notice the message.

I can give you direction and support with anything described on this site.

My background is civil engineering from building a civil engineering construction company from 1990 to 2005. I have practical experience of building a large range of structures.

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