<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">In response to my query looking for innovative inexpensive ways to extend old 2x4 rafters to allow for about 8" of dense pack cellulose, I've received a number of responses.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Included is the suggestion we rebuild the roof by placing more insulation on top and make it vented. Am afraid this is a non starter because we don't want to have to rebuild the existing soffits AND vented roofs are not a good idea in an otherwise tightly built house. Also rec. the suggestion we sister/scab wider wood onto the 2x4s, which is exactly what I want to avoid.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">OTOH scabbing cheap plywood onto the rafters is a good idea. We wouldn't have to do this for every rafter nor for the full length. Maybe we could install cables across the scabbing to hold the netting in place after it the dense pack cellulose has been blown in.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Welcome further comments/ideas.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Sacie</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 9, 2016 at 11:32 AM, Nick Pyner <span dir="ltr"><<a href="mailto:npyner@ihug.com.au" target="_blank">npyner@ihug.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>Cheap plywood shot to the side of the rafters? <br>
</p><div><div class="h5">
<br>
<div>On 10/09/2016 12:59 AM, Sacie
Lambertson wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div class="h5">
<div dir="ltr">
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">All, We
have an old house in which we want a well insulated unvented
attic. We are replacing the existing roof (with metal) and
installing a minimal layer of XPS on top of the sheathing. We
plan to use closed cell spray underneath followed by dense
pack cellulose between the rafters. The problem is the
rafters, which are only 2x4s in this old house. I am looking
for a creative least expensive way to provide more rafter
depth for the insulation. </div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br>
</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">(We do
not want to build up the insulation on the top of the roof
sheathing because doing so requires the added cost of
completely rebuilding the existing soffits, which are in good
condition). </div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br>
</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Will
appreciate all your useful suggestions.</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br>
</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Sacie</div>
</div>
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