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 Post subject: Is this treated timber ?
PostPosted: Tue Apr 24, 2018 9:15 pm 
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Hi guys, does any one know if this timber will be treated ? Was going to burn it on multifuel stove. All the timber has come off a very old roof, not sure how old maybe from late 1800s to early 1900s.


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 Post subject: Is this treated timber ?
PostPosted: Tue Apr 24, 2018 9:29 pm 
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Hi guys, does anyone know if this will be treated timber? I was going to burn it on a stove. It all came off an old roof, not too sure how old, maybe late 1800s/early 1900s.


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PostPosted: Tue Apr 24, 2018 9:32 pm 
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To be fair it could be either way . It almost certainly won't have been treated when it was first constructed but it may have been sprayed at a later date. Detecting any past treatment can be very difficult , there won't be any smell left . Sometimes I have noticed that in the right light it is possible to see little spots of light reflected from the treatment salts sitting on the surface but this is a far from accurate or scientific method. The outer surfaces do appear darker which might indicate something may have been put on top but that's not conclusive either , I've seen similar discolouration on untreated timbers . Probably a better idea would be to look at the roof itself if that's possible . If therre's evidence rot , insect attack and modern replacement timbers therre's a chance it has been retro sprayed , it seemed fairly common practice in the later stages of the last century. If you are concerned perhaps ere on the side of caution , I don't burn treated or painted wood myself especially as I use the wood ash on the garden.


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PostPosted: Tue Apr 24, 2018 9:55 pm 
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Thanks for reply, my mate dropped it off for me whos a roofer currently re-roofing the property so having a look at isnt really an option. Hes said its not treated but im not 100% convinced.
Would it give off a distinctive smell if i was to burn it and it was treated ? Obv dont want to burn it if it is treated but as he has dropped a shed full (literally) outside my garage i cant be ar*ed to shift it all to tip. Lol


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PostPosted: Tue Apr 24, 2018 9:58 pm 
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I also should of stated that these are old tile battens.


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PostPosted: Tue Apr 24, 2018 10:04 pm 
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I have experienced some treated timbers that gave off quite acrid smoke . That was pallets rather than anything else. Perhaps do a test.and burn some to see if it smells " not quite right" . As it's likely to be only in the outer few millimetres you could cut a few sections , split off the outer surfaces and burn just them . That would concentrate any effects if anything is noticeable. Try to look at the flames too. Some timbers were treated with copper salts which might give a slight green tinge to the flames.
In all honesty your friend is probably right but I understand the caution.


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PostPosted: Tue Apr 24, 2018 10:07 pm 
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If they are tile battens then from an old roof then that makes it more likely that they aren't treated . The batterns are one off the first things to be replaced on any roof work and are far less likely to be retained and retro sprayed.



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PostPosted: Tue Apr 24, 2018 10:12 pm 
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Thanks for that, it has give me abit of reasurrance and i will do what you said and burn i little bit of it and watch the flames and smell.


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PostPosted: Tue Apr 24, 2018 10:18 pm 
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Doubt it will be treated with anything during that period.

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PostPosted: Tue Apr 24, 2018 10:22 pm 
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I just noticed you posted the same question elsewhere!!! :sad:

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PostPosted: Tue Apr 24, 2018 10:28 pm 
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i burn any timber in my wood burner in my shed
i will keep mdf /chipboard /treated to around 5-10% max off daily burn mixed over the whole day to keep it diluted and avoid possible concentration off tars oils and gasses
i dont know what the actual risks are but once the smoke is diluted perhaps 1000 times in the surrounding area it will be far less than following an old diesel lorry :dunno:

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PostPosted: Tue Apr 24, 2018 10:51 pm 
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The principal problem of burning in a domestic wood burner is that it really doesn't get hot enough. Burning at relatively lower temperatures , below 800C off the top of my head , allowsdioxins to be produced . Above that they are broken down.


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PostPosted: Wed Apr 25, 2018 6:24 am 
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just one thread per topic please. I've merged them.


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PostPosted: Wed Apr 25, 2018 7:04 am 
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Sorry guys, i never realised it wasnt allowed, thought i would get a quicker answer. :downtown: my appologies


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