Cement based tanking

I have a wood frame outbuilding that sits on a concrete foundation that comes out of the ground around 30cm. I would like to waterproof the concrete on the outside including the part below the ground to the footing. Is there some kind of cement-based tanking that one can trowel on like render?

The whole thing will be rendered when finished.

sirocosm said:

waterproof the concrete on the outside including the part below the ground to the footing.

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is your intention to make the slab dry? This will unfortunately not work as water will enter from below.

I want to waterproof the concrete part of the walls down to the footing, preferably on the outside. The slab has plastic under it so that is not an issue.

In Canada when I lived there they used to waterproof basements with tar on the outside, but only up to ground level, and then some kind of render above that. In Germany they had some kind of waterproof cement product that they used below ground, but I can't seem to find it here.

What do they use here to waterproof the walls of basements below the ground, or brickwork below the ground to the footing?