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Cistern Liners

Cistern & Tank Liners

cistern linersCistern liners are the perfect way to update existing tanks that have formed leaks or cracks in the interior. Made from economical, quality fabric, these liners are custom built to meet the exact dimensions and specifications of your cistern. Use of these liners has helped increase the lifespan of new tanks, lower repair costs for existing tanks, and prevents customers from requiring a complete tank replacement.

Common liners include drinking water compatible liners and non-potable liners for various water storage requirements.

If you have questions about any of our products, give us a call at 1-772-646-0597 or request a price quote.

How to Size Liners
cistern liners
Liner Installation
cistern liner fittings
Technical Specifications
Product Flyer
Installation Flyer
Cistern Liners Product Flyer
Cistern Liner Installation Instructions
Liner Materials

NSF 61 and FDA Approved
Additional Materials Available on Request

Sizing Built to fit your Existing Cisterns
(L x W x H) or (H x diameter)
Cistern Shapes Built to fit round, rectangular, square or
uniquely shaped cistern units.

Cistern Liner Sizing

Due to the nature of the cistern lining process, liners are sized specifically to meet the size of your existing unit to provide you with the perfect containment and repair. In order to create the best option for your location, there is some information we would first need to know. This would include:

Dimensions of your Cistern:

This will include the length by width by height (L x W x H) dimensions for rectangular or square cisterns and the height by diameter (H x dia.) for circular units.

Surface of your Cistern:

Knowing the surface of your cistern can help our sales team to determine the best option to prevent wear and tear on your liner once it is inside the cistern. It can also help to determine possible options for attaching the liner.

Piping, Hardware or Access Restrictions:

In order to get the best view of where this liner will be going, it is also helpful to know what kind of piping, tubes, fittings or access restrictions there are around your cistern. This can help our team account for these restrictions during the quoting of your liner.

If you have questions about any of our products, give us a call at 1-772-646-0597 or request a price quote.

Cistern Tank Liner Installation

Repeat these steps for each section of battening.

  • Measure 1" from each edge of the battening section and drill the bolt through the cistern wall, geotextile and the battening. Measure every 12" from those drill holes, and drill remaining holes. Remove the battening.

  • Roll out Cistern liner and place into the tank. Verify the liner is in the correct position and extends to the top of the tank. Smooth out bottom corners and weigh down with sandbag to keep in place.


  • While holding the battening against the liner and side of the tank, mark the drill holes on the liner for that section of battening. Remove and set aside the battening, drill through the liner and tank wall at each mark.

  • Fold back liner, and drive the wedge anchors partially into the drilled holes using a hammer, being sure to leave bolt threaded onto the anchor.


  • Stretch gasket material taut over the wedge anchors and hammer anchors through, securing the gasket to the side of the tank. Leave space for application of Sikaflex between the gasket and tank liner.

  • While wearing gloves, apply small beads of Sikaflex under the gasket, through and around the wedge anchors and around the entire perimeter of the tank.

  • Hammer the battening back over the liner and wedge anchors, applying pressure to secure the Sikaflex.

  • Use the nuts and washers provided to secure the battening into place.

cistern linersInstallation of a cistern tank liner can vary depending on your location and the type of cistern that you have. In general, liners are typically installed either through fittings located on the tank, outside bands placed around excess fabric on the tank or inside installation through the top of the liner and the top of the tank. The following describes one of the ways this installation can be achieved:

Banding: This will include the use of a plastic or steel band that can be placed all the way around the interior of the tank. This banding will use gaskets and hardware to attach your liner directly to the tank.

Depending on the fabric of your existing cistern, a geotextile may also be added between the cistern liner and the tank. This can help to provide extra protection for the liner and prevent water leaking.

View Secondary Containment Products here.