Dam liners are a simple way to provide waterproofing of dams and ponds where the soil type is not ideal for water storage, providing the waterproofing essential for a viable dam.

Power Plastics’ dam liners are ideal where the technical skills exist and the only requirement is a secure membrane. DIY installations and kits for dams between 6m and 30m in width, and up to 50m in length are our specialty, where the customer is competent or has the necessary engineering skills required to design the dam. Site preparation is critical to ensure a Power Plastics dam liner is appropriate.

We deal with engineers, the agricultural community, aid agencies, mining companies and manufacturing entities.

Power Plastics works with partner groups and suppliers to supply accessories around the dam liner. For example, piping suppliers, valve manufacturers and consulting engineers all collaborate to become part of the same project team.

We recommend using a VapourGuard cover over the top of the dam water to prevent evaporation and algae growth, and to preserve water quality.

Benefits

  • Dam liners secure the dam to prevent any water leakage
  • Manufactured for a DIY approach, water-tight dam liners allow users to maximise their own skills and resources for a more cost-effective installation
  • Able to ship to remote locations for DIY installation

Materials and specifications

  • Polyethylene liners are used when cost is a factor – a fairly rigid material containing UV stabilizer, best used where simple, regular rectangular or circular excavations are employed with little chance of sharp items to puncture lining
  • PVC liners are appropriate where difficult topography requires a customised fit to be manufactured, and 90° angles and sharp corners are prevalent

250 micron polyethylene (PE)500 micron PE600gsm PVC800gsm PVC
Usage recommendationsFor use where there are no sharp objects and a sandy soil base. Applicable for small dams or ponds.
For use where there are no sharp objects. Applicable for large dams. A versatile and flexible PVC liner. Potable quality available where required.
A PVC liner that is bendable and able to take corners.
Weight / thickness230g / m2 / 250 micron469g / m2 / 500 micron600 g / m2800g / m2
DimensionsLength, breadth and depth with an extra 1m on both sides for tuck in. Length, breadth and depth with an extra 1m on both sides for tuck in. Length, breadth and depth with an extra 1m on both sides for tuck in. Length, breadth and depth with an extra 1m on both sides for tuck in.
Lifespan / warrantyExpected 5-7 years + if underwaterExpected 5-7 years + if underwaterExpected 10 years + if underwater10 years + if underwater
ColoursBlackBlackBlack / BlueBlack / Blue
UV StabilisedHigh quality UV stabilisers are used to ensure longevity.High quality UV stabilisers are used to ensure longevity.UV stabilisers and plasticisers are used to ensure longevity. UV stabilisers and plasticisers are used to ensure longevity.
Other propertiesThe material thickness determines the price and longevity. It is vulnerable to animals walking over it.
Material is fairly rigid therefore does not accommodate the shape of irregular layouts.
Able to accept 90° angles and sharper shapes.
Most commonly used.
Material is thicker therefore less flexible than the 600gsm but is more robust and longer lasting.

Other features

Our dam liners come with an option to customise for water inlet and outlet pipes.

Watch a step by step guide to a dam liner installation:

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