Long lasting softwood fence posts

William G

Member
Check with your supplier, but pressure treated creosote (with the proper stuff -and I can't believe that anyone running a treatment plant would be using the DIYer fake stuff) should be fine.

The CCA tanalising treatment has gone to ratsh*t since the Chrome and Arsenic was - I believe- taken out.

In fact, we were talking about this today -it's a hardly perennial- was there any evidence that it was a problem?
I know they were taking piddle samples from various operatives prior, but am unaware of any epidemic in fencers or treatment plant operators.
Ok that’s interesting thanks. Iv always assumed and been led to believe that tantalising and creosote were as much use as urine when it comes to timber treatment. I’ll need to have a look into it
 

tw15

Member
Location
DORSET
Do these exist? Even the UC4 "guarantees" don't count for much. I have a large amount of stock fencing to do on arable reversion land, partly funded by Countryside Stewardship. The prescription does say that I have to use softwood posts with an "appropriate treatment." No suggestions of Clipex please, however good it is!


No such thing as long lasting softwood fence posts in my book . Oak or Chestnut is about as good as it gets . If you don't need it to look twee might as well just point up freshly cut fire cord wood up to 6-8 " dia cut from your own woods. With the modern post bangers they go in ok . Might look a bit overkill but most likely last just as long as 3 - 4 inch posts you can buy .
 

Kidds

Member
Horticulture
No such thing as long lasting softwood fence posts in my book . Oak or Chestnut is about as good as it gets . If you don't need it to look twee might as well just point up freshly cut fire cord wood up to 6-8 " dia cut from your own woods. With the modern post bangers they go in ok . Might look a bit overkill but most likely last just as long as 3 - 4 inch posts you can buy .
Exactly what we did with some leylandii. They lasted surprisingly well but they probably worked out expensive cutting by hand.
 

tw15

Member
Location
DORSET
We have tried all sorts as bought in posts barely make to 10 years before they need to be replaced . It doesn't take too long to point them on a bench or even with a chainsaw . It is something to do on a wet day.
Rule of thumb with wood is the faster it grows the quicker it rots .
 

hendrebc

Member
Livestock Farmer
No such thing as long lasting softwood fence posts in my book . Oak or Chestnut is about as good as it gets . If you don't need it to look twee might as well just point up freshly cut fire cord wood up to 6-8 " dia cut from your own woods. With the modern post bangers they go in ok . Might look a bit overkill but most likely last just as long as 3 - 4 inch posts you can buy .
I've been thinking of doing this with a load of overgrown hedges we have. How long do you think they would last? There's some hazel, birch, alder,holly and willow mostly but there might be some oak and ash too. And some pine and lelandi that need a chop I could use. Some would be big enough for strainers and gates but I don't want to use them and they rot off and ruin the fence in a few years.
 

Goweresque

Member
Location
North Wilts
Looks good (y)
Iirc @Goweresque uses imported plastic posts but they were quite pricey

Not that pricey IMO - Creosoted half rounds are over £4 from my local timber supplier now, and the last lot of 60mm x 5'10" plastic posts I had were under £4 each delivered. Now I'll accept that a 60mm plastic post is not the equal of a half round timber post in terms of rigidity, so they aren't an exact swap, but if you are fencing half decent hedges the 60mm plastic is more than enough, with the backing of the hedge behind.
 

Kidds

Member
Horticulture
I've been thinking of doing this with a load of overgrown hedges we have. How long do you think they would last? There's some hazel, birch, alder,holly and willow mostly but there might be some oak and ash too. And some pine and lelandi that need a chop I could use. Some would be big enough for strainers and gates but I don't want to use them and they rot off and ruin the fence in a few years.
I think I’d still buy creosote treated first, especially if fencing livestock. Mine were used to support a raspberry patch (a 2 acre patch!) which have a limited lifetime anyway. The posts generally lasted longer than the raspberries though.
Ash and birch won’t last 5 minutes nor will willow unless it grows when you stick it in, I think hazel rots quick outdoors too. Oak is your best, preferably cleft rather than sawn.
 

roscoe erf

Member
Livestock Farmer
Not that pricey IMO - Creosoted half rounds are over £4 from my local timber supplier now, and the last lot of 60mm x 5'10" plastic posts I had were under £4 each delivered. Now I'll accept that a 60mm plastic post is not the equal of a half round timber post in terms of rigidity, so they aren't an exact swap, but if you are fencing half decent hedges the 60mm plastic is more than enough, with the backing of the hedge behind.
just brought a barrel of creosote its not that dear
 

renewablejohn

Member
Location
lancs
Not that pricey IMO - Creosoted half rounds are over £4 from my local timber supplier now, and the last lot of 60mm x 5'10" plastic posts I had were under £4 each delivered. Now I'll accept that a 60mm plastic post is not the equal of a half round timber post in terms of rigidity, so they aren't an exact swap, but if you are fencing half decent hedges the 60mm plastic is more than enough, with the backing of the hedge behind.

Thats interesting. Converting to metric yours are 60mm x 1.8m whereas the NZ ones are 100 x 1.8 and 125 x 1.8. Could you still use a post knocker on the 60mm as I was going to manufacture 100mm as standard.
 

renewablejohn

Member
Location
lancs
How much would people pay for posts made out recycled plastic and which would be the optimum post size. ie 60mm 100mm or 125mm. Maybe assuming fence post price is 5p per mm diameter.
 

Henarar

Member
Livestock Farmer
Location
Somerset
I've been thinking of doing this with a load of overgrown hedges we have. How long do you think they would last? There's some hazel, birch, alder,holly and willow mostly but there might be some oak and ash too. And some pine and lelandi that need a chop I could use. Some would be big enough for strainers and gates but I don't want to use them and they rot off and ruin the fence in a few years.
willow or withy cut them and drive them the same day and they may well last a long time (y) make sure you point the bottom end though :D if you don't trim them then given time they will grow more stakes ;)
 

Goweresque

Member
Location
North Wilts
Thats interesting. Converting to metric yours are 60mm x 1.8m whereas the NZ ones are 100 x 1.8 and 125 x 1.8. Could you still use a post knocker on the 60mm as I was going to manufacture 100mm as standard.

I don't think you could use a post knocker on the 60mm, no, there's too much flex in them. We use a rammer with a rock spike, make a pilot hole first, then the plastic post slides in perfectly.
 

Goweresque

Member
Location
North Wilts
How much would people pay for posts made out recycled plastic and which would be the optimum post size. ie 60mm 100mm or 125mm. Maybe assuming fence post price is 5p per mm diameter.

Its horses for courses I think, smaller diameter is fine in protected locations, 60mm against hedges for example, whereas a stand alone fence would need 75-80mm diameter posts to have enough rigidity.

When you say 5p/mm diameter, what length are you getting at that price?
 

renewablejohn

Member
Location
lancs
Its horses for courses I think, smaller diameter is fine in protected locations, 60mm against hedges for example, whereas a stand alone fence would need 75-80mm diameter posts to have enough rigidity.

When you say 5p/mm diameter, what length are you getting at that price?

The same 1.8 mtr as your 60mm post but in 100 or 125. Just going off whats advertised on that NZ website.
 

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