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<p>Reuben,</p>
<p> Is the insulation type a vapor barrier? Could make all the
difference.</p>
<p> I think one of the best descriptions I've seen for wall
construction is at buildingscience.com<br>
<a
href="https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall">https://www.buildingscience.com/documents/insights/bsi-001-the-perfect-wall<br>
</a><a
href="https://www.buildingscience.com/documents/building-science-insights-newsletters/bsi-090-joseph-haydn-does-perfect-wall">https://www.buildingscience.com/documents/building-science-insights-newsletters/bsi-090-joseph-haydn-does-perfect-wall</a></p>
<p> Just adding insulation without considering the water & air
& vapor issues could easily lead to the damage reported by the
house restorers. Understanding and addressing the whole picture
to arrive at a properly functioning wall would be the ticket. That
could well mean doing more than just blowing insulation into the
walls.<br>
</p>
<p>Joe<br>
</p>
<div class="moz-cite-prefix">On 11/25/2019 8:03 PM, Reuben Deumling
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAE5fceAY_YF1=JVSWKhyU+W3M70jGjfGDHnhJfiMR_172WKvww@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
I realize this list has gone silent, but in the hope that some of
you smart greenbuilding folks are still out there, receiving this
email, I would like to pick your brains. A correspondent from
Illinois has been cautioned by five(!) "very experienced people'
not to insulate the walls in an old house:
<div><br>
</div>
<div><span style="color:rgb(51,51,51);font-family:'Lucida
Grande','Trebuchet
MS',Verdana,Helvetica,Arial,sans-serif;font-size:13px;background-color:rgb(232,232,232)">In
the attic, yes. We are not going to put it in the walls. After
talking to multiple old house restorers who have been in the
trade 40 years or more, they all say one thing, that due to
lack of a vapor barrier, it will trap moisture and rot the
framing in the walls. They did a lot of insulating in the
1970's, and then a great deal of structural repairs in the
1990's on those houses.</span><br
style="color:rgb(51,51,51);font-family:'Lucida
Grande','Trebuchet
MS',Verdana,Helvetica,Arial,sans-serif;font-size:13px">
</div>
<div><br>
</div>
<div>I suggested he try to find a second opinion. Please share
your wisdom. <span
style="color:rgb(51,51,51);font-family:'Lucida
Grande','Trebuchet
MS',Verdana,Helvetica,Arial,sans-serif;font-size:13px;background-color:rgb(232,232,232)"><br>
</span></div>
<div><br>
</div>
<div>Thanks very much </div>
<div>Reuben Deumling (who joined this list almost twenty(!) years
ago.)</div>
<div><br>
</div>
<br>
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