ALL Stores are NOW OPEN | Delivery times for online POND LINER and selected products are currently extended | Please Read our Covid 19 FAQ page

Pond Liner Installation

Flexible Pond Liners

Liners are the most popular and cost effective way of creating a garden pond. They are available in a wide range of materials and sizes and allow you to make a pond of any shape. Remember that the manufacturers guarantee does not include punctures -so it is worth taking care to install correctly, using a good quality underlay.

There are many different types of pond liners available. World of Water stock a large range from budget to heavy duty liners.

All are quality liners offering long life. The budget liners are ideal for smaller simpler pools where children and pets are less likely to damage the liner. Heavy duty liners are ideal for larger pools and situations where they need to be more durable.

Installation Guide:

Dig the hole to the required shape for the liner, taking care to make the sides sloping rather than vertical. To create planting areas for marginal plants leave steps from 20 cm to 40 cm deep as required (as shown in the illustration). For a perfect finish, ensure that the top edge of the pool is level. This will make edging the pool easier with minimal visible liner exposed.


Ensure the pool area is free from sharp stones, place underlay on the base and sides of the excavation and then place the liner in position. Should you need to tread on the liner remove shoes to avoid piercing. Lightly anchor the liner in position with bricks evenly distributed around the edge of the liner, not the excavation.


Run water into the pool gradually, at the same time pulling and tucking the liner into shape to ensure a neat finish. You’ll notice that the liner will stretch at first, then as the weight of water increases, it will mould itself to the shape of the sides. Fill the pool completely, checking that the liner fits closely all round. Leave overnight, to ensure proper settlement of the liner. Trim off excess liner around the pool with scissors or a knife, leaving 30cm overlap for anchorage.



After a week you can complete your pool by edging in stone, or paving as desired (see other ideas below), allowing for a small overhang to hide the liner from direct sunlight. For a different effect, grass turf can be used, which may overhang and touch the water.



Edging Ideas

HOWEVER much planning goes into creating a pond, poor edging can spoil the finished effect and look unsightly, as well as possibly leaving liners exposed to direct sunlight. This can cause the liner to perish, hence shortening its life expectancy and allowing it to become more vulnerable to accidental damage.


Important Consideration Siting Ponds

Siting any ponds in areas prone to waterlogging or where there is a high water table must be avoided due to
the risk of damage. This can be avoided by having a fully or a partially raised pond.

No sunken pond should be emptied if the ground is saturated with water. Ground water will fill the excavation from under the liner causing serious damage.

Partially raised ponds should not be emptied below ground level in wet conditions, as above.
Raised Ponds should be safe to empty in most conditions.

If emptying any pond ensure you drain the water well away from the pond. This will stop the drained water running under the liner and causing damage.

Damage caused by poor siting or external water pressure would not be covered by any warranty.

REMEMBER: - Should a liner or a preformed pool fail once it has been installed, the guarantee will only cover the replacement or repair of the liner, not the installation costs, so World of Water have made sure they only sell top quality liners. Care must be taken to avoid exposed liner showing above the water level once it has been installed. Not only does it look unsightly,but also sunlight can slowly degrade it.