<html><head></head><body><div class="ydpb183447byahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:24px;"><div><div dir="ltr" data-setdir="false">I also am facing a very labor intensive repair this spring of a low slope roof insulated with Polyiso, an EPDM membrane over top and sleepers and a deck over that. Seems that insects have chewed enough tunnels to compromise the integrity of it all. <br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Suggestions for replacement? Is there rockwool that can be structural at about 7"? I haven't started research. The un-install and re-install will be a nightmare and I won't completely know what it going on until I open it all up. I am in Western Oregon (Eugene) and I ain't opening it until the rains leave.... <br></div><div dir="ltr" data-setdir="false"><br></div><div><br></div><div class="ydpb183447bsignature">Beatrice Dohrn <div><br></div></div></div>
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On Sunday, February 18, 2024 at 10:39:57 AM PST, Mike O'Brien <obrien@hevanet.com> wrote:
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<div><div id="ydped194f4eyiv9822760445"><div>Hi, Ben—<div><br clear="none"></div><div>Our house plans specified closed-cell foam in our roof, but without asking, our general contractor installed open cell foam. Now, 16 years later, there is rot in the roof sheathing and a very expensive repair job ahead. So I would caution against ever specifying either foam, as a mistake can be catastrophic years later.</div><div><br clear="none" id="ydped194f4eyiv9822760445lineBreakAtBeginningOfSignature"><div dir="ltr">Best, Mike O’Brien<div>Sent from my iPhone</div></div><div dir="ltr"><div id="ydped194f4eyiv9822760445yqtfd87320" class="ydped194f4eyiv9822760445yqt0923032227"><br clear="none"><blockquote type="cite">On Feb 18, 2024, at 8:13 AM, Benjamin Pratt <benjamin.g.pratt@gmail.com> wrote:<br clear="none"><br clear="none"></blockquote></div></div><div id="ydped194f4eyiv9822760445yqtfd11085" class="ydped194f4eyiv9822760445yqt0923032227"><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div>Hi. I've been on this forum for many years, but I am not an architect or qualified expert. I came across this article today and had some concerns about this project. <br clear="none"></div>1. By air source heat pump, I assume they mean mini-split(s). I did some calculations rencenty and found that electricity is about 9 times more expensive per therm than gas. Combining with the very cold temperatures we typically get, I imagine The bill will be higher than if they had a gas boiler. Also, they now have to deal with uneven temperatures throughout the house and leaving doors open to all the rooms they want heated. What do you think?<br clear="none"><div>2. I have read about dangers of using spray foam in an old house--especially the potential for rot. What do you think?</div><div> <br clear="none">This article reads as an advertisement for doing this sort of remodel without mentioning any of the potential downsides. I'd love to hear your thoughts.<br clear="none"></div><div><a shape="rect" href="https://www.mprnews.org/story/2024/02/18/renovating-old-1909-st-paul-house-into-all-electric-green-home" rel="nofollow" target="_blank">https://www.mprnews.org/story/2024/02/18/renovating-old-1909-st-paul-house-into-all-electric-green-home</a><br clear="none"><br clear="none"></div><div>Ben Pratt<br clear="none"></div><div><div><br clear="none"><span class="ydped194f4eyiv9822760445gmail_signature_prefix">-- </span><br clear="none"><div dir="ltr" class="ydped194f4eyiv9822760445gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr" style="font-size:15.015px;"><div dir="ltr" style="font-size:15.015px;"><font size="4">-------------------</font><span style="font-size:large;">--------------------</span><span style="font-size:large;">--------------------</span><span style="font-size:large;">--------------------</span><span style="font-size:large;">---------------</span></div></div><div dir="ltr">CONFIDENTIALITY NOTICE:<br clear="none">The contents of this email message and any attachments are intended solely for the addressee(s) and may contain confidential and/or privileged information and may be legally protected from disclosure. If you are not the intended recipient of this message or their agent, or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited.</div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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