when to use OSB

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J. Clarke wrote:

I was thinking roof or floor. There isn't really much strength need for wall sheathing, other than what it takes to help square the wall, and that's in a different direction altogether. :-)
There are home builders who will use rigid polystyrene sheets for sheathing, and just use a half sheet of ply/OSB on the corners. please.
If you're a thief, why waste your time with a door, when all you need is a cordless reciprocating saw to cut a man sized hole in the freakin wall?
--

-MIKE-

"Playing is not something I do at night, it's my function in life"
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On 9/30/2009 6:22 PM -MIKE- spake thus:

Or, more amusingly, a cartoon-character-sized hole in the wall. (Like Wiley Coyote getting snookered by the roadrunner for the 159,000th time.)
--
Found--the gene that causes belief in genetic determinism

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wrote:

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It does look random but in a clip I watched on TOH or another show it was clearly being laid down in a pattern that gave the finished sheet "grain" that gave it more strength along it's length than across it's width. http://en.wikipedia.org/wiki/Oriented_strand_board discusses the process.

http://www.youtube.com/watch?v=1UO_A5a25U4&feature=PlayList&p
DFA1D72E95B011&playnext=1&playnext_from=PL&index=5 has a quick shot of the strands being laid down and you can see that they are oriented... look quick!
John
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LDosser wrote:

I dunno, I always called it flake board or wafer board, and had the same question you do. I assume it's supposed to all go in one direction, but sure doesn't seem to do that, does it? Anyway, the stuff is pretty good for it's intended purposes. Of interest to me, someone who normally hates this stuff, I found it OK for doors on my TS bench... surprises the heck out of me. Even more surprising is in this very thread, someone else said/did the same thing... Also, I learned long long ago the stuff is more durable in weather than most people think, just keep it off the ground.
I think lots of people think of particle board, designed for indoor use like counter tops as so on, that stuff gets wet, it immediately swells and falls apart. If glue is not waterproof, it can't get wet. Wood is waterproof, so if you have a wood product, with waterproof glue, you should be OK. Of course, there is waterproof, and then there is waterproof...
--
Jack
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No there isn't. It is either waterproof or it isn't.
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Jack I think you get indoor use strand with deck board and roof and siding mixed up.
There is outdoor water proof glue. It makes for a heavier board and is more expensive. Some builders cheap out.
A big builder in San Jose area was caught a few years after he completed a housing tract. I think insurance paid and he continues to pay high insurance.
The other one on rood decking - use stainless staples. If you use normal steel they will rust out and shingles will blow or fall off.
Martin
Jack Stein wrote:

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Why is it called Oriented when it's obvious it isn't?
"adjusted or located in relation to surroundings or circumstances;"
The chips are "oriented" (albeit randomly) with respect to on another. If they were all "oriented" in one direction, the resulting panels would not be as strong in any direction (and the panels would cost more thn solid hardwood owing to the time and effort it would take to so "orient" each little scrap one so all the grain was lined up).
http://www.google.com/search?q fine+Oriented&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
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Hoosierpopi wrote:

http://www.google.com/search?q fine+Oriented&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
Have you seen many industrial manufacturing machines and processes? They come up with incredibly fast ways to move, locate and place all kinds of things smaller and lighter than wood chips. I can't remember how they did it, but when I saw it, the chips all cam of a conveyor or belt or something, all pointing the same direction.
--

-MIKE-

"Playing is not something I do at night, it's my function in life"
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Magnets. :)
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wood magnets? try http://en.wikipedia.org/wiki/Oriented_strand_board#Manufacturing
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Nothing in that about magnets. :(
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Hoosierpopi wrote:

"Randomly oriented"
Ya gotta love it:-)
Almost as good as deafening silence, or cruel kindness...
--
Jack
Got Change: General Motors ======> Government Motors!
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Does *anyone* ever understand what you blather about?
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Upscale wrote:

Random orientation is an oxymoron, just like cruel kindness or deafening silence...
Sorry to confuse you!
--
Jack
Got Change: Freedom ========> Socialism!
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wrote:

No it isn't.
Regards,
Tom Watson http://home.comcast.net/~tjwatson1 /
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Tom Watson wrote:

Yes, it is.
--
Jack
Got Change: 57 States, not including Alaska and Hawaii!
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Jack Stein wrote:


http://www.youtube.com/watch?v=lL9oA1LFoMw

--
See Nad. See Nad go. Go Nad!
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wrote:

No it isn't. Yes it is. No it isn't.
You're really some kid masquerading as an asshole aren't you?
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snipped-for-privacy@no.com wrote in

I don't see how there's a masquerade involved.
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