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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
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gregotyn
Joined: 24 Jun 2010 Posts: 2201 Location: Llanfyllin area
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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gregotyn
Joined: 24 Jun 2010 Posts: 2201 Location: Llanfyllin area
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Ty Gwyn
Joined: 22 Sep 2010 Posts: 4610 Location: Lampeter
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Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
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Ty Gwyn
Joined: 22 Sep 2010 Posts: 4610 Location: Lampeter
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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Posted: Fri Nov 21, 14 7:53 am Post subject: |
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I think larch has reasonable natural durability if it is really well seasoned by air drying, but otherwise, not much better than most softwoods.
David, I don't think your sawmills was the only one to try to rush the process. Chromium can give some very nasty ulcers, and of course arsenic is a known poison. We are being sold 'special' treated softwood posts now that are supposed to have a 10 year life with only copper treatment, but it sounds as if this 'special' treatment is what the tanallising was supposed to be in the first place. This leads me to suspect that most posts were just duncked in the treatment bath, seasoned or not, and didn't get fully impregnated, just coated.
As I said, we try to use chestnut now as it is naturally durable, and being in the south, there are plenty of them cut quite close to us. |
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Ty Gwyn
Joined: 22 Sep 2010 Posts: 4610 Location: Lampeter
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gregotyn
Joined: 24 Jun 2010 Posts: 2201 Location: Llanfyllin area
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VM
Joined: 23 Nov 2007 Posts: 1748 Location: Lincolnshire
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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Hairyloon
Joined: 20 Nov 2008 Posts: 15425 Location: Today I are mostly being in Yorkshire.
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Mistress Rose
Joined: 21 Jul 2011 Posts: 15932
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