Hydrowall Design Guide and Drawings

A Hydrowall is made from individual modules that connect to form a load-bearing wall. A wall can be a free standing structure like a fence, or it can be structural wall that can support a roof load. It can also be put up alongside existing walls and be a regular slimline water tank.

A wall can be just one module or hundreds of modules. Modules can connect to each other in straight lines, or can be joined at corners and T- junctions as required.

Hydrowall can also have openings for windows and doors. Modules are connected by piping so the water can flow between them. As long as a pipe can be connected then the modules can have openings, or even connect to other wall sections further away.

Hydrowall is a modular wall or water wall system. Hydrowall consists of vertical posts, horizontal beams, and a heavy duty flexible liner for storing the water. The structure can then be covered in whatever cladding materials you choose. It makes the Hydowall extremely versatile for matching into your design. Some options for cladding materials are Colorbond metal sheet, composite panels, CFC or plasterboard sheets, weatherboard, or almost any cladding system you choose. We can supply some cladding systems, or you can supply your own.

Hydrowall modules are available in a range of heights and lengths.

Heights of 1.8m, 2.1m, 2.4m, 2,7m and 3m 
Lengths of 1200mm and 600mm (1210 centres to fit standard 1200 wide boards)
Width of 280mm (300mm with 10mm cladding each side)

Hydrowall can incorporate services like power and plumbing services. The vertical posts provide space to run services.

Some tips for designing the system:

  • Avoid drilling/ screwing into the metal frame except into the designated holes. Metal shards created when drilling or screwing can cause damage to the liner. If non-standard holes are required, then they should be done away from the installation site and cleaned well.
  • It is recommended that doors are placed at the end of a wall section. If the door is placed in the middle of the wall section, then pipes must travel under the doorway in order to connect to the other side. This means either casting into the slab or diverting the pipes out and around the door. It is preferable to place the doorway at the end of the wall section, so there is no need to add complexity to the pipework.
  • Each module is only 3 sided. It consists of one short side and two long sides. It is like this so it can connect to the previous module. You need to add one end kit of matching height for each wall section or opening you have. For example, if you have one straight wall it will need just one end- kit. If the wall is two sections (1 corner), then you need two end kits. Please refer to the Framing Diagram drawing below.


Module detail diagram
Wall assembly diagram
Framing Diagram
Wall Section
Module Plan
Corner Detail
Cladding Detail (1 of 2)
Cladding Detail (2 of 2)
Engineering Details
Plumbing Details

Module detail


Wall Assembly


Framing Diagram


Wall Section 


Module Plan


Corner Detail


Cladding Detail

Hydrowall Cladding Detail 1


Cladding Details- Alternate 


Engineering Details- Samples


Plumbing Diagram


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