Products and Applications

DDT Liners have been involved in a broad range of projects since 1983. We have grown with the geo-lining industry and are always looking for new challenges.


DDT Liners supplies and installs dam liners for many different industries. We also have a vast product range available to suit your requirements. Explore the range here!


DDT Liners supplies and installs Floating Covers for Evaporation Control as well for Containment Purposes. Find out more about what we can accomplish together here!


Mining firms may sometimes require liners for short, medium or long term use. DDT Liners can provide the products and/or services to suit your company’s requirements.


Today’s landfills are engineered, constructed and operated in accordance with detailed guidelines to ensure the protection of the surrounding environment. Find out more.

We began with fabricating and installing light weight liners in 1983. By 1989, we progressed into the heavier, more “industrial grade” liners and covers.

Some of our key milestones include:

1990 – Our first Lined/Floating Covered Potable Water Reservoir installed

1991 – Our first (and Australia’s first) Lined/Floating Covered reservoir for bulk Molasses Storage installed

1992 – Our first Double-lined ponds with Leak Detection System (for Toxic Effluent) installed

1997 – Our first Floating Cover for Bio-gas Harvesting installed

2002 – Our first Landfill Liner System installed

2002 – Our first Floating Cover for Evaporation Control installed

2004 – Our first (and World’s first) Lined/Floating Covered Reservoir for bulk concentrated Caustic Soda installed (and 4 more since)

  • Our biggest individual liner: 37.2 hectares of 1.5mm thick HDPE (second biggest: 32 hectares at same site)

  • Our biggest dam with liner: Lake is approx 5,000 hectares when full – Liner on dam wall only… approx 70,000m².

  • Our best lining effort in one shift: 14,000m² of 1.5mm HDPE – deployed, joined and tested with a site team of 12 men.

Employment Opportunities

DDT Liners have a solid permanent staff base. However, we are willing to consider potential employees for both permanent and casual positions.

DDT Liners has a NIL TOLERANCE Drug & Alcohol Policy. Our staff are rigorously tested to ensure the safety of themselves and fellow staff members. We also perform pre-employment medicals to ensure any potential employees are fit to perform the kind of work we do.

If you’re interested in applying for a position, please either email your resume to or post to: DDT Liners, PO Box 6493, Toowoomba West Qld 4350