Hey Bill-- it is 2008 where I am. [for a bit]
On Tue, 30 Dec 2008 20:21:03 -0500, email@example.com wrote:
Agent must read something differently than T-bird does. I just hit
reply and it reads as 2008 here.
That seems odd. Are there different types of pressure treated wood? Some
years ago we had a raised bed built surrounding a patio using pressure
treated 6x6's laid directly on the ground, stacked to create the depth,
then filled with soil and planted. In 8 years of living there we never had
any deterioration. The only change was a darkening of the wood.
(correct the spelling of "geemail" to reply)
On Mon, 29 Dec 2008 11:45:38 GMT, Wayne Boatwright
Sure are. Even 20 yrs ago there was 'ok' PT and 'PT that wouldn't
die'. I don't remember the spec differences, but I remmeber checking
I don't remember when the new style PT started- 6-8yrs ago?- but it is
apparently inferior to all the old stuff. [unless your goal is to eat
hardware, which the new stuff does]
Sure. Some PT is rated for above ground, some for ground contact, some for
direct burial. It depends on the amount of goop injected...more goop = more
restance + higher price. The wood should be stamped or have a tag telling
the percentage. The normal Home Depot type is as low a percentage as it
There are different grades of wood, maybe it was not treated right,
you have the lablel warranty and reciept? Your city architect or
engineer, free to talk to, may know if better quality is out there
that they use.
You are thinking of the old CCA treated lumber which did and still
does last for years. The new ACQ treated lumber is still in the
I wish that I had bought a bunch of the old stuff, and still may if
I can find some somewhere.
I wonder who's definition of "proper" treatment the manufacturer goes
by? Now days it is common for pressure treatment to pressure the
chemicals some depth into the surface, but not necessarily to the
center. Then the wood commonly develops cracks. If the crack extends
beyond the treated depth, there is nothing to prevent termites &
moisture/rot from getting to the untreated portion of the wood and
hollowing it out. I believe that is what caused the problem I
experienced. Bad thing is that there is no way of telling how
"properly" the lumber is treated without cutting off a portion of it.
It is measured by the pounds per cu/ft of injected material.
I am not sure what is "good" with ACQ but I wouldn't use anything less
than .40 CCA for much of anything and when you are in salt water 2.5
is a better number.
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