Essential Tips on How to Build a Pond

I found that prevention is better than cure! A garden pond must be constructed correctly to prevent a load of problems later on. This collection of tips covers pond construction, some ideas to copy nature, pump selection and even something on a bog garden.

These ten tips on how to build a pond have been acquired through experience. I have had my fair share of fixing leaking ponds. During these difficult times I have found some excellent solutions on how to build a pond that copies nature and which is durable.

1) Dig the pond hole slightly larger than the required final size. Avoid steep sides else all your lining materials will slide down to the bottom. This is an allowance for all the layers of material that will be placed in the hole. Line the hole with underlay or a thin layer of sand before you place the pond liner. This will prevent any sharp stones or roots from penetrating the liner and causing a leak.

2) Make indentations in the bottom of the garden pond hole where plants will be planted. Put down the underlay and pond liner. Place the plant pots in the preformed indentations and line the pond with a layer of washed river sand (sharp sand). Finally place the pebbles on top of the sand. Although your plants are still in pots, it will appear as if they are growing through the pebbles.

3) Make a ledge around the garden pond approximately 3 inches (75 mm) below the final water level. Build your rock edging on this ledge and backfill with soil. It will appear as if the rocks form a natural barrier keeping the water in the pond.

4) A sandy beach which gradually slopes into the water provides an excellent area for wildlife to get safe access to the water. Also make sure that there is a clear view for the birds from this beach. They will not feel threatened and will stay longer and possibly have a bath as well!

5) A durable garden pond is created by plastering the liner with a 25 to 35 mm layer of mortar. Mix 1 part cement with 2 parts river sand and one part building sand add a waterproofing agent. Use only enough water to make the mixture workable. Line the pond in one go. If you stop and start again you will have a crack in the pond.

6) Natural rock and mortar have different temperature expansion rates. This means that with time, cracks will appear between any rocks built into the edge of the pond and the mortar lining. Your pond will eventually leak. This is how to build a garden pond using a natural rock finish on the rim:

a) Line the pond with mortar.

b) Place a thick layer of mortar on the rim where the rocks will be placed.

c) Place a layer of plastic cling wrap on top of the mortar.

d) Firmly push each rock into its position on top of the cling wrap. The mortar will take the shape of the rocks.

e) Remove the rocks and cling wrap after the mortar has dried. Temporally store the rocks so that you will be able to position them back in exactly the same position later.

f) Apply silicone sealer to the mortar and