In message , ss
wrote
I know there are all sorts of preservatives in B&Q etc for painting on
fence posts but isnt there a longer term solution like coating the part
below ground with something to stop water soaking in to the posts, like
a plastic coating. I am basing my enquiry on the basis of thinking most
of the bog standard preservatives are so enviromentally friendly they
probably are not really much good.

Any thoughts or ideas on this.

Leave the post standing in a bucket of old engine oil/paraffin for a
week. Daily coat the post to "ground level" using an old paint brush

When concreting into the ground take the concrete an inch above ground
level and taper it for water run off.

--
Alan
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