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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Basically it does - as I mentioned wood
deterioration (weathering) is a surface phenomenon. UV and moisture degrade the
lignin on the surface of the wood leaving cellulose which is resistant to
subsequent UV degradation. Removing that layer (which is pretty thin .1-.25 mm)
then exposes a fresh layer which then degrades to cellulose again as it is
exposed. If you clean the cellulose layer off the surface then you really need
to put a UV resistant finish on – if you leave it grey then really all
you have to contend with is the roughness of the wood and the comfort of the
furniture.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Weathering though is also progressive as
when the surface degrades it becomes friable, splinters, loses fibres etc. This
traps moisture and dirt which then swells the wood - opening up more area for
weathering. Since cellulose is a food for fungi – wood surfaces can
become mildewed or moldy if there is sufficient moisture (if the wood is
continually wetted without decent periods for drying). We are locally
experiencing more intense rains with periods of sun that is keeping exterior
wood wetted for longer periods (sun driving the moisture in).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoAutoSig><u><font size=3 color=green face="Gill Sans MT"><span
style='font-size:12.0pt;font-family:"Gill Sans MT";color:green'>JOHN SALMEN
ENVIRONMENTAL DESIGN<o:p></o:p></span></font></u></p>
<p class=MsoAutoSig><st1:Street w:st="on"><st1:address w:st="on"><i><font
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font-family:"Gill Sans MT";color:black;font-style:italic'>4465 UPHILL RD</span></font></i></st1:address></st1:Street><i><font
size=2 color=black face="Gill Sans MT"><span style='font-size:10.0pt;
font-family:"Gill Sans MT";color:black;font-style:italic'>,. <st1:City w:st="on"><st1:place
w:st="on">DUNCAN</st1:place></st1:City>, B.C. <st1:country-region w:st="on"><st1:place
w:st="on">CANADA</st1:place></st1:country-region>, V9L 6M7<o:p></o:p></span></font></i></p>
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style='font-size:10.0pt;font-family:"Gill Sans MT";color:black;font-style:italic'>PH
250 748 7672 FAX 250 748 7612 CELL 250 246 8541<o:p></o:p></span></font></i></p>
<p class=MsoAutoSig><st1:PersonName w:st="on"><i><font size=2 color=black
face="Gill Sans MT"><span style='font-size:10.0pt;font-family:"Gill Sans MT";
color:black;font-style:italic'>terrain@shaw.ca</span></font></i></st1:PersonName><i><font
size=2 color=black face="Gill Sans MT"><span style='font-size:10.0pt;
font-family:"Gill Sans MT";color:black;font-style:italic'><o:p></o:p></span></font></i></p>
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
greenbuilding-bounces@lists.bioenergylists.org
[mailto:greenbuilding-bounces@lists.bioenergylists.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Sacie Lambertson<br>
<b><span style='font-weight:bold'>Sent:</span></b> <st1:PersonName w:st="on">Jan</st1:PersonName>uary
23, 2011 10:25 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on"><st1:place
w:st="on"><st1:PlaceName w:st="on">Green</st1:PlaceName> <st1:PlaceType w:st="on">Building</st1:PlaceType></st1:place></st1:PersonName><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Greenbuilding]
Charring wood (was Nansulate Insulation)</span></font><span lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Speaking of charring,
I've often wondered as I occasionally scrub off the accumulated gray on deck
furniture if the process that results in the graying is in an way also
protective of the wood? Any thoughts on this? Sacie<o:p></o:p></span></font></p>
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margin-left:4.8pt;margin-right:0cm'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p><i><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
font-style:italic'>Charring wood is done a lot in traditional Japanese building
with a lot of success.</span></font></i><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</blockquote>
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