Flexible pond liners allow you to create the shape and size pond that suits you and your garden. Being flexible they can conform to most designs. Pond liner is available in rolls, with widths of 2, 4, 6, 8, and 10 metres. Our pond liners offer peace of mind with 10 year guarantee for PVC and 20 year guarantee for EPDM.
Calculating Liner Size
Use the easy formula below to calculate liner size.
Liner Length
Length (a) + Depth (b) x 2 + 80cm
(40cm overlap each side under rocks)
Liner Width
Width (c) + Depth (b) x 2 + 80cm
(40cm overlap each side under rocks)
Calculating Pond Volume
Use the easy formula below to calculate pond volume:
Length [m] (a) x Width [m] (c) x Depth [m] (b) x 1000 = Litres
eg. 4m x 6m x 1.5m Rectangle = 36m3 x 1000 litres
= 36,000L
Pond Liner Installation
-
Step 1 Digging
Once you have decided where to locate your pond, lay out its shape on the ground with a piece of rope or garden hose. Next, excavate the depth of the shelves, which should be approx 20cm wide and 25cm below the water level – sloping inwards. Then dig out the rest of the pond.
-
Step 2 Prepare and Line the Pond
Remove all sharp stones and debris and ensure the top of the pool is even. Prepare pond area with clean sand or underlay. Drape the liner loosely over the top and lightly anchor in position with bricks or rocks evenly distributed around the liners edge.
-
Step 3 Fill and Finish
Run water into the pond gradually, tucking the liner into shape to ensure a neat finish. Any wrinkles present will disappear as the pond fills. Once filled allow to settle for a minimum of 7 days. Trim excess liner and complete by edging with stones or paving. See below for edge treatment methods.
Pond Liner Edge Treatment Methods
Different ways you can configure your pond.
Bog Garden
Moisture loving plants in waterlogged pocket or shelf. Soil must not be too rich in nutrients.
Waterfall, Cascade or Stream
Rocks and pebbles laid in a mortar or sand on liner. Liner is laid wide as possible and extends into pool to minimise leaks. Use double layers or shade cloth to protect liner from rocks et cetera.
Raised Concrete Block Pool
Raised Brick Pond with Cap
Pebble Garden
Rounded pebbles on gentle slope. Shade cloth should be used on top liner for puncture protection.
Rock / Stone Edges
Accurately leveled shelf to support rocks (Mortar optional. Layer of protection essential above and sand bed below)
