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Thread: Green or dried decking?
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6th October 2006, 10:55 PM #1
Green or dried decking?
Just about to put a decking on the back of the house. Green tallowood or ironbark is cheaper that dried and I have got conflicting advice about whether to use green or dried.
My thoughts are to use dried timber, but any advice sought.
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6th October 2006 10:55 PM # ADSGoogle Adsense Advertisement
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6th October 2006, 11:17 PM #2
Doesn't green move ?
Over here we mainly use merbu or treated pine.If at first you don't succeed, give something else a go. Life is far too short to waste time trying.
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7th October 2006, 09:00 AM #3Member
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most BOATS are decked with dry timber
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7th October 2006, 10:13 PM #4China
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Depends on what shape you want the deck to be in a couple of years, if you use the green stuff, it will surley change as it dries, I know as my brother chose the green stuff 2 years ago, it is now so warped it has to be repaired
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7th October 2006, 10:30 PM #5
Could some moderator move this to the appropriate place please?
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8th October 2006, 10:04 AM #6
Oops sorry, wrong forum, I just saw the building and repairing bit.
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8th October 2006, 12:34 PM #7
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8th October 2006, 06:48 PM #8Quantum Field Theorist :-)
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The trouble with green is that you don't know what you're getting.
Only when it dries out will you see how much shrinkage (i.e: cracks)
open up. Tallowwood and ironbark aren't too bad in terms of tangential
shrinkage (around 6%-8% from memory), but even that's enough to
ruin the look if you get bad pieces. Merbau is 3%, which is why it exhibits
much less surface checking, but it's only durability class-2, compared
to class-1 for tallow and ironbark.
I recently installed a turpentine deck (13% tangential shrinkage!), and
bought "seasoned" timber. Much of it was okay, but some of the
dark-brown pieces cracked quite badly, which surprised me. Later I
found out that "seasoned" and "kiln-dried" are not the same thing.
The "seasoned" decking I'd bought had simply been lying around in
the shed for a while, so some pieces were fine after full drying in
the sun, but others definitely were not.
Verdict: make sure it's "kiln-dried" if tallow/ironbark/etc. You might
get away with undried Merbau because of its lower shrinkage
properties, but it won't be as durable.
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