[Greenbuilding] heat treated wood siding

[Sacie Lambertson]

Many thanks for the variety of responses to my query about 'heat treating'
wood.  I should have been clear I was not asking about kiln drying rather
to the Scandinavian practice of heating the exterior cladding.  John
Straube responded exactly.  I did not know however, those northern houses
were painted.  It is the worn gray look I find attractive.  Unfortunately I
suspect the best wood used for the heat treating process is expensive.

Interesting to me, on the house in question (an addition), the original
wood siding is intact and in very good shape.  Built in 1883, that says
something, both to the wood used and its care over the years.

Sacie





On Thu, Nov 12, 2015 at 7:17 PM, John Straube <jfstraube at uwaterloo.ca>
wrote:

> I am assuming Sacie you mean heat treated for cladding, not kiln dried or
> heat treated to kill bugs for shipping pallets
> For those who dont know about this process google "heat treated wood
> cladding” and you can read about it.  It involves heating to 180-200
> C/350-400F or so.  It causes a reduction in ductility, but apparently
> significantly enhances durability.
> One technique that is a bit less controlled is to flame treat the wood and
> char it. Some people like the look (e.g. architects) but it is a finicky
> process and often run off from rain results in significant staining.
> The controlled Scandinavian process of heat treating results in some
> excellent durable products, especially if it is painted right after (as a
> lot of this product apparently is). The common method is to heat in an
> inert gas atmosphere, but I have heard that hot oil is also used and has
> advantages
> It seems that it is quite durable, a natural pressure treatment.
>
> On Nov 12, 2015, at 4:56 PM, Sacie Lambertson <sacie.lambertson at gmail.com>
> wrote:
>
> > I am interested in this group's opinion about using heat treated wood on
> the exterior of a house in NE Kansas?
> >
> > Thanks, Sacie
> > _______________________________________________
> > Greenbuilding mailing list
> > to Send a Message to the list, use the email address
> > Greenbuilding at bioenergylists.org
> >
> > to UNSUBSCRIBE or Change your List Settings use the web page
> >
> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
>
> John F Straube
> jfstraube at uwaterloo.ca
> www.JohnStraube.com
>
>
>
>
> _______________________________________________
> Greenbuilding mailing list
> to Send a Message to the list, use the email address
> Greenbuilding at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
>
> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20151113/3e21e9ed/attachment.html>