Galvanized Plant Trough

malana3 | 19:20 Tue 16th Jun 2015 | Gardening

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I will soon filling and planting up a new galvanized steel plant trough and with a view to prolonging its life feel it would be a good idea to provide a waterproof barrier between the soil and the trough. My first thought was to use a bituminous paint but I believe this may be detrimental to the plants. Confirmation if this is so or not would be appreciated. If I cannot use a bitumen material have any ABers any suggestions as to a suitable material I could use to provide a waterproof barrier. Many thanks in advance for any replies.

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Robinia

You could line it with some strong black plastic, an empty compost bag cut open would do. Make holes in the bottom for drainage.

Why not use an exterior oil based paint for metal work? Alternatively an acrylic car spray paint?

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