"Chris Holford" wrote in message
...
In article , Jacko
writes


"Chris Holford" wrote in message
...
In article , Jacko
writes


"Ian Jackson" wrote in message
...
In message o.uk,
Dave
Liquorice writes
On Mon, 11 May 2015 11:11:59 +0100, gareth wrote:

As these things seem to rot at ground level and just below but not
above, then perhaps the remedy is to seal with bath sealant where
the
post enters the concrete,

snip
It might be worth considering drilling a hole (1/4" to 1/2") to the
depth
of the centre of the post - about 3" above the ground, and at an angle
of
45 degrees. Every so often, top it up with your favourite preservative
(several fills, and allow the preservative to soak in well), then fit
a
water-tight bung.

You'd think that if that was a useful approach, someone would
have tried it and found it works better than not doing that and
the word would have got out about that by now.

Presumably it doesn't work because you need to
pressure treat wood for the preservative to work.

In my experience it works very well.

But did you test it properly and only do that on half the
posts and check if the ones you did with the hole lasted
a lot longer than the ones you didnt have the hole in ?

Bet you didnt.

I treated the posts on my fence with (old)'Cuprinol'in holes like this;
they are still there after 30 years.

But you dont know what would have happened if you had not done that.

The fence on the other side of the
garden, which is owned by the neighbour and not given this treatment has
had to be replaced twice in the same time period.

But you dont know that the posts were done the same way or with
the same wood or treatment before the posts went into the ground.

Plenty who have not done any preservative in holes in the posts
have had their fence last for more than 30 years, including me.