Waterproof floor?

Hi!

So at the back of this tunnel there is a spring, the average flow is a several drops per second which comes from bare rock (the cottage is built into a hill so this spring is around 20ft below ground level).

Anyways, I have set up a gutter which collects the main drips of water from the rock, there are other drips that come from the tunnel ceiling, so i'd like to waterproof the floor of the tunnel.

What is the natural way to do this, bentonite clay with some tiles over the top?

Thanks.

Interesting brick tunnel you have there!
Obviously, it's professionally built. Was it always intended to be a water supply?

Gravity is the way to bring the water into the house.
Using clay or metal slope the floor to move it where you want.
It will not soak in if it is moving downhill.

thomas rubino wrote:Interesting brick tunnel you have there!
Obviously, it's professionally built. Was it always intended to be a water supply?

Gravity is the way to bring the water into the house.
Using clay or metal slope the floor to move it where you want.
It will not soak in if it is moving downhill.

Thanks! All we know about the history of this tunnel is that it would have been constructed during the Victorian age along with the cottage. This wall would have originally been outside since the kitchen was built onto it as an extension in the early 1900's.

The spring and floor level of the tunnel is around 4.5ft lower than the ground level of the house, so will require some kind of removable collection tank, or an electric pump I guess.

Good point about gravity, at the moment the tunnel slopes at an angle downward toward the house where the water soaks into the ground below the foundations.