What is a pond lining clay?

Sodium Bentonite (AKA the best pond lining material) is a milled mineral (almost dust) that works as a barrier between the pond soil and the water.

If you spread the bentonite over the dry pond and mix it with soil and water, you will get a low permeability mud that will seal the pond base.

So, if the pond lining clay does the same as the plastic liners, why should I install it on my pond instead of an RPE liner?


Pond lining material for large ponds

Before beginning to talk about the pond lining material, let’s make one thing clear, when we are talking about large ponds, we are talking about ponds larger than 5000sqft area.

Having a large pond is more challenging than having a small one, just for the simple fact that having more area increases the possibilities and places where the pond could leak.


Bentonite Pond Liner Calculator

To seal a pond with bentonite you need to know your pond width and length, deepest point, and the type of soil. However, if your pond has a single leaking point and is very clear where is it, you will not need to seal the whole pond, it is recommended but not if the leak is not too big. Contact our experts, they will assist you to estimate the amount of bentonite that your pond needs.