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I am considering laying a copper foil membrane underneath my flexible pond liner to prevent the pond liner being pierced by horse tail roots (again!) Does anyone know whether this will work as it is quite expensive?



I don't know about copper foil but aluminium (baking) foil is very flimsy and likely to be easily pierced. I would have thought the foil would have to be of a reasonable thickness to work and, at the price copper is it would be extremely expensive.

25 Aug, 2010


Old cheap nylon foam back carpet would probably work better.

25 Aug, 2010


I successfully lined a pond against horsetail and mouse/mole damage using cheap roofing felt . Done on a warm day it is surprisingly easy to fit to shape and is only about £10 for a roll 1 metre wide and 8 metres long at DIY sheds. One roll was enough to do my 3metre by 2.5 metre semi circular pond

Here's a photo

25 Aug, 2010

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