How to Install Your Pond Liner How to Install Your Pond Liner

1. Decide on the shape and size of your pond

Decide on the shape and size of your pondThe best way to decide on the size and shape of your pond is to lay a length of rope or hosepipe. Position the pond so it is sheltered from winds, receives sunlight for at least half the day, and away from overhanging trees or deciduous plants that shed their leaves. Also avoid areas where surface water tends to collect, or areas with a high water table as this could accumulate under the pond liner and create problems later. At this point it is important to focus on the size of the pond in relation to the rest of the garden, donít make the pond to small, you will only regret it later and wish you had built it slightly bigger, it is also a good idea to think about where you are going to house/hide filters, and about electrical supplies etc. Ponds also pose serious dangers if young children are in the garden, do not allow children to play unsupervised if you have a pond in your garden as they will be attracted to it!

2. Ensure Your Pond is Level

Ensure Your Pond is LevelDig the pond or water garden to the desired shape taking care to make the sides sloping rather than vertical, it is best to choose a simple shape, as this will significantly reduce folds in your liner, complex shapes should be avoided. Create areas for marginal plants leave steps from 20cm to 40cm deep. It is important to ensure that the top edge of the pond is level, this is very important as when you fill the pond the water will be perfectly level and if your top edge is not level then you will see areas of exposed pond liner with you may consider unsightly.

Your pond should be sufficiently deep to allow your fish to survive through the winter. Koi will require a deep pond at least 1.2 metres deep, for other common pond fish the pond should be at least 60-90cm deep. These depths allow the fish to survive over winter in the deepest part of the pond where the water is warmest. Around 50% of the pond area should be kept at this maximum depth.

3. Lay down the underlay and pond liner

Lay down the underlay and pond linerOnce the pond is dug and any stones have been removed it is a good idea to put a thick layer of soft sand in the base around 5 - 7.5cm deep, this will give added protection to the liner where the weight of water is the greatest. Place underlay on the base and sides of the excavation, if your underlay is in strips then overlap these by at least 150cm then place the liner in position. Do not stand on the liner unless you have removed your shoes. Anchor the in position by placing stones around the edge of the liner, not the excavation.

4. Add water

Add waterFill the pond gradually using a hose pipe, at the same time pulling and tucking the liner into shape to ensure a neat finish. You may wish to stand in the pond whilst it is filling working from inside to neatly fold the liner as the pond fills Once the pond is filled completely leave for a period of at least 24hrs to ensure proper settlement. Trim off excess pond liner and underlay, leaving a minimum of 30cm overlap for anchorage.

5. Finish with edging

Finish with edgingDress the edges of your pond with paving, stones or turf. If using paving then allow the stones to overhang the edge by a few inches to cover any exposed liner. If you using cement to secure edging do not allow any cement to fall into the pond.

6. Install Pumps and Filters etc

Install Pumps and FiltersYour pond is now ready, it's time to add your pump, filter, plants, fish, lighting and anything else. If you need any further advice please contact us.

If you require more information on liner selection please contact us, or telephone 0845 602 7244 (information / order line)

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