On Fri, 15 Jul 2016 11:03:42 -0700, Electric Comet
<[email protected]> wrote:
>does kiln drying impart any additional resistance to dry rot
>
>i have some old kiln dried lumber
>i think it is fir but might be cedar
>
>it seems to be free of dry rot but i do not know if that is due to
>the wood or the kiln drying
>
>
>
>
>Kiln dring makes no difference
>
>
>
>
>
On Thu, 28 Jul 2016 09:51:08 -0400, Jack <[email protected]> wrote:
>On 7/17/2016 12:04 PM, J. Clarke wrote:
>> In article <[email protected]>,
>> [email protected] says...
>>>
>>> There is no such thing as "dry rot;" dry wood does not rot. What appears to be dry rot is wood that has been damp or wet at some time, rotted, and then dried. Next time you're in the Egyptian Museum in Cairo see the collection of wood furniture that spent 3,000 years in arid conditions and is still serviceable today.
>>>
>>> There is no mechanism by which the technique used to dry wood can affect its resistance to rot. Keep it dry and the microorganisms that cause wood rot cannot survive.
>>
>> Well, for certain values. Get it above a certain temperature and the
>> chemistry changes. It won't rot but it will be more dimensionally
>> stable, more brittle, and less strong.
>
>I saw an article on Pinterest or some such talking about burning, or
>heating wood to make it rot and insect resistant, instead of using
>pressure treated with chemicals.
>
>Didn't read it but sounded interesting.
The Vikings did so with the ship lumber, nothing is ever really new,
nor safe.
In article <[email protected]>,
[email protected] says...
>
> There is no such thing as "dry rot;" dry wood does not rot. What appears to be dry rot is wood that has been damp or wet at some time, rotted, and then dried. Next time you're in the Egyptian Museum in Cairo see the collection of wood furniture that spent 3,000 years in arid conditions and is still serviceable today.
>
> There is no mechanism by which the technique used to dry wood can affect its resistance to rot. Keep it dry and the microorganisms that cause wood rot cannot survive.
Well, for certain values. Get it above a certain temperature and the
chemistry changes. It won't rot but it will be more dimensionally
stable, more brittle, and less strong.
Electric Comet <[email protected]> wrote in news:nmb8n3$a6k$6
@dont-email.me:
> does kiln drying impart any additional resistance to dry rot
Dr Jagels writes a column on wood for Wooden Boat magazine.
I beleive he covered that question not so long ago (altho
more in the context of damp rot), and I beleive the conclusion
was that air dried lumber is more rot resistant.
If you're really curious, you might search back issues of
Wooden Boat.
John
There is no such thing as "dry rot;" dry wood does not rot. What appears to=
be dry rot is wood that has been damp or wet at some time, rotted, and the=
n dried. Next time you're in the Egyptian Museum in Cairo see the collectio=
n of wood furniture that spent 3,000 years in arid conditions and is still =
serviceable today.
There is no mechanism by which the technique used to dry wood can affect it=
s resistance to rot. Keep it dry and the microorganisms that cause wood rot=
cannot survive.
On 7/17/2016 9:55 AM, Davoud wrote:
> There is no such thing as "dry rot;" dry wood does not rot. What
> appears to be dry rot is wood that has been damp or wet at some time,
> rotted, and then dried. Next time you're in the Egyptian Museum in
> Cairo see the collection of wood furniture that spent 3,000 years in
> arid conditions and is still serviceable today.
>
> There is no mechanism by which the technique used to dry wood can
> affect its resistance to rot. Keep it dry and the microorganisms that
> cause wood rot cannot survive.
>
Actually there is a type of treatment to wood that involves no chemicals
that keeps it from rotting.
There is a "relatively" new process that heats the wood to, IIRC, in
excess of 300 degrees F. This renders the wood unable to be a food
source for mold, mildew, rot, insects, etc.
On Fri, 15 Jul 2016 20:07:38 +0100
steve robinson <[email protected]> wrote:
>Kiln dring makes no difference
i wonder if that really applies to all woods
this stuff seems really stable as it is
On 7/17/2016 12:04 PM, J. Clarke wrote:
> In article <[email protected]>,
> [email protected] says...
>>
>> There is no such thing as "dry rot;" dry wood does not rot. What appears to be dry rot is wood that has been damp or wet at some time, rotted, and then dried. Next time you're in the Egyptian Museum in Cairo see the collection of wood furniture that spent 3,000 years in arid conditions and is still serviceable today.
>>
>> There is no mechanism by which the technique used to dry wood can affect its resistance to rot. Keep it dry and the microorganisms that cause wood rot cannot survive.
>
> Well, for certain values. Get it above a certain temperature and the
> chemistry changes. It won't rot but it will be more dimensionally
> stable, more brittle, and less strong.
I saw an article on Pinterest or some such talking about burning, or
heating wood to make it rot and insect resistant, instead of using
pressure treated with chemicals.
Didn't read it but sounded interesting.
--
Jack
Add Life to your Days not Days to your Life.
http://jbstein.com
On Thu, 28 Jul 2016 09:51:08 -0400
Jack <[email protected]> wrote:
> I saw an article on Pinterest or some such talking about burning, or
> heating wood to make it rot and insect resistant, instead of using
> pressure treated with chemicals.
did a tiny bit of research and throughout history charring the exterior
of wood was a technique used as a preservative
it only makes sense in certain applications