Builders and Suppliers of Wide Span Curved Roofs

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Reservoir Roofing

Providing clean reliable water

Permanent roofing on water reservoirs helps maintain the quality of potable water.

Spantech provides flat or sprung-curved roofing profiles ideal for new and refurbished water storage facilities. Our range of long-span, standing-seam roofing profiles span further than any comparable product on the market. This helps Spantech significantly reduce the overall weight of a reservoir roof, and on large projects, minimise the overall construction costs.


We have extensive experience roofing water reservoirs and water treatment projects for major clients such as Sydney Water, one of Australia’s largest water utilities.

Our unique roofing solution

A Spantech roof is a low maintenance, long life roofing solution. Utilising our unique roofing profiles:

  • helps ensure clean and reliable water storage;
  • reduces interruption to supply;
  • reduces construction time
  • reduces facility downtime and interruptions to supply;
  • reduces maintenance costs;
  • reduces the risk of contamination from dust, foliage, pollution, pests or deliberate actions;
  • minimises ongoing chemical costs; and
  • minimises loss through evaporation.

Choice of materials

Spantech can provide our long span roofing profiles in either pre-painted steel or aluminium.

Pre-painted steel profiles are suitable for projects requiring large span roofing profiles where minimising to amount of internal support structure is an advantage. Pre-painted steel is available in an number of finishes including protective coatings specifically designed for potable water.

Spantech aluminium roofing profiles are suitable for essential infrastructure requiring ultra long life performance.

Aluminium for ultra performance

Our 370 Series aluminium roofing system is recommended where an ultra-long-life roofing solutions is required. This product has an effective life of over 50 years.

Aluminium ‘C’ Purlins

Spantech also offers a range of aluminium ‘C’ Purlins to compliment our long span aluminium roofing profiles. Spantech ‘C’ purlins are available in a range of sizes. They feature a “down-lip” design top prevent moisture and debris buildup. Our C Purlins can be sprung curved or rolled to suit the radius required for the reservoir roof.