- Joined
- Jul 29, 2013
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- 3,308
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- Rhode Island, USA
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Pond foam is your friend for waterfalls. It is not waterproof but it does a great job in directing water over the stones instead of under it. Digging down will not help, the water will still go under it.
I built a wall to hide the liner then I put the waterfall stones on top of the wall and liner and used pond foam on the sides and under the stone, some water will still get past it but very minimal and the flow will go over the top. Click the link below to my pond and scroll down to the stream pictures, it will show the wall and how I hid the liner
https://www.gardenpondforum.com/showcase/rob-amys-pond.7/
I built a wall to hide the liner then I put the waterfall stones on top of the wall and liner and used pond foam on the sides and under the stone, some water will still get past it but very minimal and the flow will go over the top. Click the link below to my pond and scroll down to the stream pictures, it will show the wall and how I hid the liner
https://www.gardenpondforum.com/showcase/rob-amys-pond.7/