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Puddled clay pond Puddled clay pond, what is it, how is it done? Puddled clay is the name given to the process of puddling clay, all you really do is refine the clay (check and remove any non clay objects) then lay the clay down in thin layers, but each layer must be whacked (or puddled) to prevent any air pockets as these can dry out and collapse later. A puddled clay pond must be thick, at least 20 cm all over. This is to prevent the clay from cracking due to natural ground movement. If you have no clay you can buy clay for puddling, the clay itself is not that expensive, how ever transporting it is. The clay must never be allowed to dry out, as if it does it will crack and leak, but this also applies during construction Puddled clay ponds take a lot of effort to construct, need a lot of maintenance and the transport costs of the clay are expensive too, it is for these reasons you do not see many puddled clay ponds, and if you consider puddled clay pond cost against a butyl liner pond the butyl lined pond is often cheaper and needs no where near as much maintenance.
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