March 2010


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Tim Yandow <[log in to unmask]>
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Wed, 10 Mar 2010 20:29:07 -0500
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Hello all,

On the subject of green building, I am soon beginning renovation work on a
1960's home in Burlington. We are adding an addition to the south and west
sides of the house. The new envelope will be 2x6 with damp spray
cellulose. The existing house is 2x4 with fiberglass and the owners would
like to bottom up the house more, so we are thinking about adding a layer
of insulation to the outside of the house since all the old vinyl siding
is coming down and the windows all replaced (most of them have broken
seals). I am trying to figure out the best way to insulate from the
outside and make provisions for new corner boards and hardi-plank siding.
With polyisocyanurate, for instance, there is the problem of not being
able to add house wrap and needing to use longer fasteners for siding and
to secure window flanges. Or can strapping be used over that? Then there
is the issue of extension jams either inside or outside...I would love to
know if anyone has worked out a good solid system to do this. What I have
read and seen so far does not satisfy me. Thanks.

Tim Yandow