as boron is a natural element why is it unacceptable to burn ?
axelvonduisberg,
Apr 28, 3:23pm
because it emits poisonous gases and burns out grates super quick.
bergkamp,
Apr 28, 3:26pm
what are the poisonous gasses ?
Im interested also becouse i use this stuff at work everyday
reeb,
Apr 28, 4:05pm
common sense not to burn chemicals in timber
bergkamp,
Apr 28, 4:47pm
absolutely agree , just wanting to know why that is with boron ?
golfaholic2,
Apr 28, 5:54pm
Id also like to know where the grate is in ya average log burner . (not that burning H1.2 is a good idea)
krames,
Apr 28, 6:31pm
at the bottom
lythande1,
Apr 28, 6:44pm
Boron preservative Boron is a water-based preservative frequently used for H1.2 framing timber. It is commonly dyed pink (although where it is used for certain H3.1 applications, it is pre-primed in grey.) boron from boron-treated timber has no reported long-term health effects.
LOSP preservative Preservation involves the use of solvents to impregnate timber with chemicals such as TBTO (tributyltin oxide), TBTN (tributyltin napthenate), IBPC (iodo propynyl butyl carbamate), and CuN (copper naphthenate), although timber treated with these can no longer be used as enclosed framing under Amendment 7 to B2/AS1. The solvents give off gas (evaporate) for some time after treatment.
Tributyl tin oxide (TBTO), a commonly used preservative with LOSP, is a strong skin irritant, so skin and eye protection must be worn in conjunction with its use.
CCA preservative CCA treated timber (also commonly called tanalised timber) contains copper, chromium and arsenic.
And this is what they are on about, the last ones. Not the boron stuff.
They don't use the arsenic ones in some overseas places anymore.
ianab,
Apr 28, 7:23pm
I'm thinking that the risks of burning wood that you KNOW is ONLY borate treated is low. You can buy jars of Borate from Bunnings, in the cleaning isle, and take it home to clean your kitchen. It does say say poison on the label, and suggests you don't eat it, but then that's the same as dishwasher powder.
CCA? Yeah, you don't want to go there, your ash will be "toxic waste" because of the Arsenic, some likely goes up the chimney and falls on your neighbours, plus possible corrosion of the fireplace.
Take care with Boron ashes going into your garden though. As a "trace" element it's actually needed, but too much will start to kill plants.
bergkamp,
Apr 29, 9:59am
CCA dont want to go there? LOL . all of us carpenters will have unhaled ,ingested and absorbed it during construction. for me that is 40 years,
Agree would not burn CCA , just wondering about boron
dastedly,
Apr 29, 10:27am
People have this big thing about treated timber . but what is the treatment? Boron treatment very low ,bit like fly spray in ways . but higher rate treatment is other thing . Boron is only for bug not for rot , may be no one should live in houses made from timber then? but we do
harm_less,
Apr 29, 11:04am
The problem isn't timber as such but more that the predominant timber used in NZ is radiata pine which has very low natural durability so must have toxic substances applied to (and into) it in order to slow its decomposition to acceptable rates for its various uses.
ianab,
Nov 18, 4:01pm
When the treatment is IN the timber it's relatively harmless, we don't eat the stuff, and the metal salts are designed to remain impregnated IN the wood.
It's when you start burning it. Now the wood is gone, and you are left with the treatment elements in the ashes. That would be Copper, Chromium and Arsenic in the case of CCA treatment.
The Borate in H1 treated wood isn't as toxic the more durable treatments, and that's why you only use H1 in places where the wood stays dry. Exposed to weather the water soluble borate will leach out, and leave you with untreated / rotting wood.
Since the public registrations are closed, you must have an invite from a current member to be able to register and post in this thread.
Have an account? Login here.